Although there are certain differences in the center of gravity between rural revitalization and human-centered urbanization,their connotations and goals require that both must be promoted in concert.Therefore,based o...Although there are certain differences in the center of gravity between rural revitalization and human-centered urbanization,their connotations and goals require that both must be promoted in concert.Therefore,based on a deep understanding of the connotation of rural revitalization and human-centered urbanization,it is necessary to clarify the goals of the two through the two-way flow of elements between urban and rural areas,the urban-rural linkage of industries,to achieve coordinated promotion of rural revitalization and human-centered urbanization in China.展开更多
Implementing the rural revitalization strategy is an important decision-making arrangement made by the party s 19th National Congress,and is the general grasp of the work of"agriculture,rural areas and farmers&qu...Implementing the rural revitalization strategy is an important decision-making arrangement made by the party s 19th National Congress,and is the general grasp of the work of"agriculture,rural areas and farmers"in the new era.In rural development,the issue of cultivated land is an important way to promote poverty alleviation in the vast rural areas and build a well-off society in an all-round way.In combination with the fact that the current quality of cultivated land resources in China is not high and the basic fertility has been continuously declining caused due to pollution,China must promote a scientific and rational system of arable land fallow to ensure the further development of agricultural modernization in China.In the process of researching the implementation of the arable land fallow system,the problems of land abandonment and"non-agriculturalization"after farmland fallow,the willingness of farmers to fallow and the subsidy for farmland fallow have been discovered.In response to the problems above,corresponding policy recommendations are put forward in order to better promote the process of arable land fallow and poverty alleviation in China.展开更多
Macroscopic grasp of agricultural carbon emissions status, spatial-temporal characteristics as well as driving factors are the basic premise in further research on China’s agricultural carbon emissions. Based on 23 k...Macroscopic grasp of agricultural carbon emissions status, spatial-temporal characteristics as well as driving factors are the basic premise in further research on China’s agricultural carbon emissions. Based on 23 kinds of major carbon emission sources including agricultural materials inputs, paddy ifeld, soil and livestock breeding, this paper ifrstly calculated agricultural carbon emissions from 1995 to 2010, as well as 31 provinces and cities in 2010 in China. We then made a decomposed analysis to the driving factors of carbon emissions with logarithmic mean Divisia index （LMDI） model. The results show：（1） The amount of agricultural carbon emissions is 291.1691 million t in 2010. Compared with 249.5239 million t in 1995, it increased by 16.69%, in which, agricultural materials inputs, paddy ifeld, soil, enteric fermentation, and manure management accounted for 33.59, 22.03, 7.46, 17.53 and 19.39%of total agricultural carbon emissions, respectively. Although the amount exist ups and downs, it shows an overall trend of cyclical rise; （2） There is an obvious difference among regions：the amount of agricultural carbon emissions from top ten zones account for 56.68%, while 9.84%from last 10 zones. The traditional agricultural provinces, especially the major crop production areas are the main source regions. Based on the differences of carbon emission rations, 31 provinces and cities are divided into ifve types, namely agricultural materials dominant type, paddy ifeld dominant type, enteric fermentation dominant type, composite factors dominant type and balanced type. The agricultural carbon emissions intensity in west of China is the highest, followed by the central region, and the east zone is the lowest; （3） Compared with 1995, efifciency, labor and structure factors cut down carbon emissions by 65.78, 27.51 and 3.19%, respectively;while economy factor increase carbon emissions by 113.16%.展开更多
Agricultural land is the key to large-scale agricultural management,and the transfer price is the key to the success or failure of land transfer. At present,there are many problems in the pricing of rural land transfe...Agricultural land is the key to large-scale agricultural management,and the transfer price is the key to the success or failure of land transfer. At present,there are many problems in the pricing of rural land transfer in China,such as low price,random pricing,and large price difference,which seriously hinder the development of rural land transfer. Drawing lessons from the research results of domestic and foreign scholars,combined with the actual situation of rural land transfer in China,this paper analyzes the influencing factors of land transfer price in the context of rural land reform. Finally,according to the influence of different factors on the behavior of agricultural land transfer,this paper proposes establishing and perfecting the evaluation system of contracted land,perfecting the evaluation institution of transferred land assets and establishing a unified dynamic monitoring system of land transfer price in the whole country,and then driving the broad masses of farmers to get rich together,which is of great significance to achieving the revitalization of China’s rural areas.展开更多
Rural-urban land conversion is a universal phenomenon in the rapid process of economic development and urban growth.The welfare of farmers who lost their farmland attracted a widespread concern within the society and ...Rural-urban land conversion is a universal phenomenon in the rapid process of economic development and urban growth.The welfare of farmers who lost their farmland attracted a widespread concern within the society and academia.However,further research about differentiated policies according to the characteristics of different farmer groups is still need to be conducted.This article divides the land-lost farmers into three age groups:younger than 45,45-65,and more than 65.It proposes a welfare index system including eight functional areas based on different age groups of affected farmers,taking four districts of Wuhan City as case study area.Fuzzy mathematics method is used to derive the aggregated welfare effect index.Our analysis show that the overall welfare levels of land-lost farmers of all age groups declined,but with a varying degree,with the level of welfare in those farmers who are 45-65 years old,younger than 45 years old,and older than 65 years old decreased by 18.7%,16.6%,and 12.7%,respectively.The direction and degree of effects on the functional activity index varies among different groups.Economic conditions,living environment,health,and social participation of all age groups decrease while social security and housing conditions increase.On the other hand,development opportunities,social communication,and leisure have different changing directions in different age stages.These results call for differentiated and tailor-made compensation policies for land-lost farmers,towards improving the welfare levels of all farmers and reduce the disparity among them.展开更多
Based on the strategies for mral revitalization proposed in the 19th National Congtess report and 2018 No.l Document of CPC Central Committee, combined with the current situation of rural environmental pollution ...Based on the strategies for mral revitalization proposed in the 19th National Congtess report and 2018 No.l Document of CPC Central Committee, combined with the current situation of rural environmental pollution in China, tiiis paper first elaborated die connotation of rural ecological landscapes, and analyzed the structure, fimctions, and values of rural landscape ecology. The principle of building rural landscape ecology under the strategy of rural revitalization was studied. Finally, the methods and approaches of rural landscape ecological construction under the strategy of rural revitalization were studied.展开更多
The rural land system reform is an essential part of China s rural economic system reform.In recent years,China s rural land system becomes gradually diversified,and is developing towards market and benefiting people,...The rural land system reform is an essential part of China s rural economic system reform.In recent years,China s rural land system becomes gradually diversified,and is developing towards market and benefiting people,which is favorable for improving the rural economy.Through more than 40 years of reform and opening up,China s rural land system reform has been continuously deepened and sectionalized,which has also affected the income of farmers.Rural land reform provides great opportunities for farmers to increase their income and contribute to the realization of land asset income and interests.However,the rural land system reform also has some drawbacks,which limit the increase of farmers income.This paper attempts to analyze the internal logic of land system reform and farmers land interests,and accordingly comes up with recommendations for deepening the rural land reform.展开更多
This paper measures the Chinese regional income distribution gap based on the Theil index with data of 31 provinces in China from 1998 to 2011. The results showed that overall the income gap between China's rural ...This paper measures the Chinese regional income distribution gap based on the Theil index with data of 31 provinces in China from 1998 to 2011. The results showed that overall the income gap between China's rural areas was on the rise from 1998 to 2006,and the income gap was mainly caused by the gap between the East China,Central China and West China. After 2006,it showed a slow decline. The dynamic panel data model established for consumer demand,spending habits,income,regional income disparities showed that income and regional income disparities significantly influence consumer demand of rural residents. Before 2006 regional income gap inhibited the consumption of rural residents,but it promoted consumption after 2006.展开更多
In " leading enterprise + farmer" cooperation model,farmer's behavior of breaching contract exists generally. In this paper,from the angle of incomplete contract,the influencial factors of farmer breakin...In " leading enterprise + farmer" cooperation model,farmer's behavior of breaching contract exists generally. In this paper,from the angle of incomplete contract,the influencial factors of farmer breaking contract are analyzed. It is found that farmer sex,age,culture degree and farming period have obvious effects on the behavior of breaching contract. Under regulating effect of relationship quality,farmer assest specificity,exogenous uncertainty and endogenous uncertainty affect farmer's breaking behavior. That is,the higher the farmer assest specificity,the lower the farmer breaching tendency; higher exogenous uncertainty causes that farmer is easy to generate breaching behavior; higher endogenous uncertainty causes that farmer is also easy to take breaching behavior.展开更多
As urbanization expands＇ into the suburbs of Chinese cities, the conversion of farmers into citizens with urban social protection is becoming an important issue facing Chinese megacities. Taking Beijing as an example...As urbanization expands＇ into the suburbs of Chinese cities, the conversion of farmers into citizens with urban social protection is becoming an important issue facing Chinese megacities. Taking Beijing as an example, this paper has calculated the one-off urbanization cost of farmers in China and arrived at the results of 500, 000 yuan per person for urbanization of centralized target regions in the suburb and 200, 000 yuan per person for urbanization of scattered target regions in the exurb. This paper considers that a diversified cost sharing mechanism should be put into place for the step-by-step urbanization of farmers. In addition, policy recommendations are proposed regarding the functional transformation of collective economic organizations, eradication of the urban-rural divide, enhancement of land system innovation and policy improvements for urbanization of rural residents.展开更多
To make clear the relation between urbanization and growth of rural resident consumption in western ethnic minority areas of China,this paper selected cross-sectional area of 12 provinces( cities) in western ethnic mi...To make clear the relation between urbanization and growth of rural resident consumption in western ethnic minority areas of China,this paper selected cross-sectional area of 12 provinces( cities) in western ethnic minority areas in 2005- 2013 and made an empirical analysis through building panel data of influence of urbanization on rural resident consumption. Results indicate that there is positive correlation between urbanization and rural resident consumption growth in western ethnic minority areas. Urbanization increases income level of rural residents,strengthens demonstration effect of urban residents on rural resident consumption,and accordingly promotes rural resident consumption growth in western ethnic minority areas. Therefore,it is required to accelerate urbanization development,expand channels of increasing farmers' income,improve resident consumption environment,and bring into play promotion function of counties,to drive rural resident consumption growth in western ethnic minority areas.展开更多
In order to visually and comprehensively grasp scientific research progress of the county-wide finance in China,and explore new breakthrough point of county-wide finance studies,this paper took China National Knowledg...In order to visually and comprehensively grasp scientific research progress of the county-wide finance in China,and explore new breakthrough point of county-wide finance studies,this paper took China National Knowledge Infrastructure( CNKI) database as research platform and made a bibliometrical study of literature indexed in CNKI between 1991 and 2013 by advanced search method. Results indicate that relevant researches take on the trend of firstly increasing then decreasing and finally steady; research hot spots mainly focus on county-wide finance and county-wide economy,county-wide inclusive finance,and county-wide finance exclusion. Based on literature review,it found subject research of county-wide finance and county-wide economic issue has become a relatively mature issue. The extension research of countywide finance exclusion and inclusive finance is devoted to remove finance exclusion. This research is a blind spot in this field and may become a breakthrough point of stimulating re-growth of county-wide finance researches.展开更多
Urbanization is a powerful engine for the growth of rural residents' consumption in China.This paper selects the cross-sectional data concerning 31 provinces( municipalities) in China during 2005-2012,and builds t...Urbanization is a powerful engine for the growth of rural residents' consumption in China.This paper selects the cross-sectional data concerning 31 provinces( municipalities) in China during 2005-2012,and builds the panel data model of influence of urbanization on rural residents' consumption in China for empirical analysis.The results show that there is a significant positive correlation between urbanization and rural residents' consumption level.From the mechanism,urbanization drives the growth of rural residents' consumption by improving rural residents' income level and changing rural residents' consumption concept.However,the uncertainties of rural residents' income inhibit the growth of rural residents' consumption.Therefore,it is necessary to accelerate the development of urbanization,broaden farmers' income channels,improve the consumer environment and accelerate the reform of the household registration system to further activate the rural consumer market.展开更多
【目的】为厘清流域面源污染源结构、精细化解析面源污染负荷时空特征,【方法】以SWAT(Soil and Water Assessment Tool)流域面源污染模型为基础,选取代表性水文系列,结合入库污染负荷计算模型,构建了污染负荷量及入库强度的面源污染关...【目的】为厘清流域面源污染源结构、精细化解析面源污染负荷时空特征,【方法】以SWAT(Soil and Water Assessment Tool)流域面源污染模型为基础,选取代表性水文系列,结合入库污染负荷计算模型,构建了污染负荷量及入库强度的面源污染关键源区识别技术流程,并在数据条件较为完备的沙河水库流域进行验证。【结果】结果表明:沙河水库流域总氮(Total Nitrogen,TN)入库负荷总量为198.34 t/a,面源污染占比为86.53%,流域内茶园TN负荷量贡献率最大,占比为23.84%;TN负荷量在丰水年和特丰水年比枯水年上升58.06%和289.09%,在年内丰水期TN月均负荷量比平水期和枯水期分别高出75.24%和372.51%;河道削减TN负荷量为33.58 t/a,削减比例为14.48%;子流域TN入库产污强度变化范围为0.36~4.73 t/km^(2)。面源污染排放入库低值区主要位于流域南部,高值区主要位于近库区域,沙河西和沙河东控制分区单位面积TN入库强度显著高于流域南部。【结论】针对高产污地类、高产污区域及高产污时段应提高面源污染防控力度;建立的技术流程可有效识别和科学解析流域面源污染关键源区,为流域水环境开展面源污染防治和生态适应性开发提供一定技术支持,使相关工作开展更加有的放矢。展开更多
基金Supported by Key Project of Humanities and Social Sciences of Hubei Provincial Education Department——"Research on the Agricultural Supply-side Structural Reform Based on the Integration of Three Rural Industries"(18D031).
文摘Although there are certain differences in the center of gravity between rural revitalization and human-centered urbanization,their connotations and goals require that both must be promoted in concert.Therefore,based on a deep understanding of the connotation of rural revitalization and human-centered urbanization,it is necessary to clarify the goals of the two through the two-way flow of elements between urban and rural areas,the urban-rural linkage of industries,to achieve coordinated promotion of rural revitalization and human-centered urbanization in China.
基金Supported by Major Project of National Social Science Fund(15ZDA020)Open-ended Fund of Yangtze River Delta Economics and Social Development Research Center(CJKF-2017-06)Social Science Research Project of Yangtze University(YS2018027)
文摘Implementing the rural revitalization strategy is an important decision-making arrangement made by the party s 19th National Congress,and is the general grasp of the work of"agriculture,rural areas and farmers"in the new era.In rural development,the issue of cultivated land is an important way to promote poverty alleviation in the vast rural areas and build a well-off society in an all-round way.In combination with the fact that the current quality of cultivated land resources in China is not high and the basic fertility has been continuously declining caused due to pollution,China must promote a scientific and rational system of arable land fallow to ensure the further development of agricultural modernization in China.In the process of researching the implementation of the arable land fallow system,the problems of land abandonment and"non-agriculturalization"after farmland fallow,the willingness of farmers to fallow and the subsidy for farmland fallow have been discovered.In response to the problems above,corresponding policy recommendations are put forward in order to better promote the process of arable land fallow and poverty alleviation in China.
基金supported by the National Natural Science Foundation of China (71273105)the Fundamental Research Funds for the Central Universities,China (2013YB12)
文摘Macroscopic grasp of agricultural carbon emissions status, spatial-temporal characteristics as well as driving factors are the basic premise in further research on China’s agricultural carbon emissions. Based on 23 kinds of major carbon emission sources including agricultural materials inputs, paddy ifeld, soil and livestock breeding, this paper ifrstly calculated agricultural carbon emissions from 1995 to 2010, as well as 31 provinces and cities in 2010 in China. We then made a decomposed analysis to the driving factors of carbon emissions with logarithmic mean Divisia index （LMDI） model. The results show：（1） The amount of agricultural carbon emissions is 291.1691 million t in 2010. Compared with 249.5239 million t in 1995, it increased by 16.69%, in which, agricultural materials inputs, paddy ifeld, soil, enteric fermentation, and manure management accounted for 33.59, 22.03, 7.46, 17.53 and 19.39%of total agricultural carbon emissions, respectively. Although the amount exist ups and downs, it shows an overall trend of cyclical rise; （2） There is an obvious difference among regions：the amount of agricultural carbon emissions from top ten zones account for 56.68%, while 9.84%from last 10 zones. The traditional agricultural provinces, especially the major crop production areas are the main source regions. Based on the differences of carbon emission rations, 31 provinces and cities are divided into ifve types, namely agricultural materials dominant type, paddy ifeld dominant type, enteric fermentation dominant type, composite factors dominant type and balanced type. The agricultural carbon emissions intensity in west of China is the highest, followed by the central region, and the east zone is the lowest; （3） Compared with 1995, efifciency, labor and structure factors cut down carbon emissions by 65.78, 27.51 and 3.19%, respectively;while economy factor increase carbon emissions by 113.16%.
文摘Agricultural land is the key to large-scale agricultural management,and the transfer price is the key to the success or failure of land transfer. At present,there are many problems in the pricing of rural land transfer in China,such as low price,random pricing,and large price difference,which seriously hinder the development of rural land transfer. Drawing lessons from the research results of domestic and foreign scholars,combined with the actual situation of rural land transfer in China,this paper analyzes the influencing factors of land transfer price in the context of rural land reform. Finally,according to the influence of different factors on the behavior of agricultural land transfer,this paper proposes establishing and perfecting the evaluation system of contracted land,perfecting the evaluation institution of transferred land assets and establishing a unified dynamic monitoring system of land transfer price in the whole country,and then driving the broad masses of farmers to get rich together,which is of great significance to achieving the revitalization of China’s rural areas.
基金supported by National Natural Science Foundation of China(71003041)the Fundamental Research Funds of the Central Universities(2662015PY198)
文摘Rural-urban land conversion is a universal phenomenon in the rapid process of economic development and urban growth.The welfare of farmers who lost their farmland attracted a widespread concern within the society and academia.However,further research about differentiated policies according to the characteristics of different farmer groups is still need to be conducted.This article divides the land-lost farmers into three age groups:younger than 45,45-65,and more than 65.It proposes a welfare index system including eight functional areas based on different age groups of affected farmers,taking four districts of Wuhan City as case study area.Fuzzy mathematics method is used to derive the aggregated welfare effect index.Our analysis show that the overall welfare levels of land-lost farmers of all age groups declined,but with a varying degree,with the level of welfare in those farmers who are 45-65 years old,younger than 45 years old,and older than 65 years old decreased by 18.7%,16.6%,and 12.7%,respectively.The direction and degree of effects on the functional activity index varies among different groups.Economic conditions,living environment,health,and social participation of all age groups decrease while social security and housing conditions increase.On the other hand,development opportunities,social communication,and leisure have different changing directions in different age stages.These results call for differentiated and tailor-made compensation policies for land-lost farmers,towards improving the welfare levels of all farmers and reduce the disparity among them.
文摘Based on the strategies for mral revitalization proposed in the 19th National Congtess report and 2018 No.l Document of CPC Central Committee, combined with the current situation of rural environmental pollution in China, tiiis paper first elaborated die connotation of rural ecological landscapes, and analyzed the structure, fimctions, and values of rural landscape ecology. The principle of building rural landscape ecology under the strategy of rural revitalization was studied. Finally, the methods and approaches of rural landscape ecological construction under the strategy of rural revitalization were studied.
文摘The rural land system reform is an essential part of China s rural economic system reform.In recent years,China s rural land system becomes gradually diversified,and is developing towards market and benefiting people,which is favorable for improving the rural economy.Through more than 40 years of reform and opening up,China s rural land system reform has been continuously deepened and sectionalized,which has also affected the income of farmers.Rural land reform provides great opportunities for farmers to increase their income and contribute to the realization of land asset income and interests.However,the rural land system reform also has some drawbacks,which limit the increase of farmers income.This paper attempts to analyze the internal logic of land system reform and farmers land interests,and accordingly comes up with recommendations for deepening the rural land reform.
基金Humanities and Social Science Fund Project of the Ministry of Education(13YJA790069)Fundamental Research Funds for Central Universities(2013RW004)
文摘This paper measures the Chinese regional income distribution gap based on the Theil index with data of 31 provinces in China from 1998 to 2011. The results showed that overall the income gap between China's rural areas was on the rise from 1998 to 2006,and the income gap was mainly caused by the gap between the East China,Central China and West China. After 2006,it showed a slow decline. The dynamic panel data model established for consumer demand,spending habits,income,regional income disparities showed that income and regional income disparities significantly influence consumer demand of rural residents. Before 2006 regional income gap inhibited the consumption of rural residents,but it promoted consumption after 2006.
基金Supported by Natural Science Research Project Fund,Ministry of Education(71573100)
文摘In " leading enterprise + farmer" cooperation model,farmer's behavior of breaching contract exists generally. In this paper,from the angle of incomplete contract,the influencial factors of farmer breaking contract are analyzed. It is found that farmer sex,age,culture degree and farming period have obvious effects on the behavior of breaching contract. Under regulating effect of relationship quality,farmer assest specificity,exogenous uncertainty and endogenous uncertainty affect farmer's breaking behavior. That is,the higher the farmer assest specificity,the lower the farmer breaching tendency; higher exogenous uncertainty causes that farmer is easy to generate breaching behavior; higher endogenous uncertainty causes that farmer is also easy to take breaching behavior.
基金supported by CASS Innovation Project"Study on the Evaluation and Improvement of Urbanization Quality in the Chinese Mainland."
文摘As urbanization expands＇ into the suburbs of Chinese cities, the conversion of farmers into citizens with urban social protection is becoming an important issue facing Chinese megacities. Taking Beijing as an example, this paper has calculated the one-off urbanization cost of farmers in China and arrived at the results of 500, 000 yuan per person for urbanization of centralized target regions in the suburb and 200, 000 yuan per person for urbanization of scattered target regions in the exurb. This paper considers that a diversified cost sharing mechanism should be put into place for the step-by-step urbanization of farmers. In addition, policy recommendations are proposed regarding the functional transformation of collective economic organizations, eradication of the urban-rural divide, enhancement of land system innovation and policy improvements for urbanization of rural residents.
文摘To make clear the relation between urbanization and growth of rural resident consumption in western ethnic minority areas of China,this paper selected cross-sectional area of 12 provinces( cities) in western ethnic minority areas in 2005- 2013 and made an empirical analysis through building panel data of influence of urbanization on rural resident consumption. Results indicate that there is positive correlation between urbanization and rural resident consumption growth in western ethnic minority areas. Urbanization increases income level of rural residents,strengthens demonstration effect of urban residents on rural resident consumption,and accordingly promotes rural resident consumption growth in western ethnic minority areas. Therefore,it is required to accelerate urbanization development,expand channels of increasing farmers' income,improve resident consumption environment,and bring into play promotion function of counties,to drive rural resident consumption growth in western ethnic minority areas.
基金Supported by Social Science Foundation of Hubei Province(2011LJ023)Project of National Natural Science Foundation(71173086)
文摘In order to visually and comprehensively grasp scientific research progress of the county-wide finance in China,and explore new breakthrough point of county-wide finance studies,this paper took China National Knowledge Infrastructure( CNKI) database as research platform and made a bibliometrical study of literature indexed in CNKI between 1991 and 2013 by advanced search method. Results indicate that relevant researches take on the trend of firstly increasing then decreasing and finally steady; research hot spots mainly focus on county-wide finance and county-wide economy,county-wide inclusive finance,and county-wide finance exclusion. Based on literature review,it found subject research of county-wide finance and county-wide economic issue has become a relatively mature issue. The extension research of countywide finance exclusion and inclusive finance is devoted to remove finance exclusion. This research is a blind spot in this field and may become a breakthrough point of stimulating re-growth of county-wide finance researches.
基金Supported by Scientific and Technological Project of Rural Practical Talent Leading Working Group Office in Hubei Province(2013LK001)
文摘Urbanization is a powerful engine for the growth of rural residents' consumption in China.This paper selects the cross-sectional data concerning 31 provinces( municipalities) in China during 2005-2012,and builds the panel data model of influence of urbanization on rural residents' consumption in China for empirical analysis.The results show that there is a significant positive correlation between urbanization and rural residents' consumption level.From the mechanism,urbanization drives the growth of rural residents' consumption by improving rural residents' income level and changing rural residents' consumption concept.However,the uncertainties of rural residents' income inhibit the growth of rural residents' consumption.Therefore,it is necessary to accelerate the development of urbanization,broaden farmers' income channels,improve the consumer environment and accelerate the reform of the household registration system to further activate the rural consumer market.
文摘【目的】为厘清流域面源污染源结构、精细化解析面源污染负荷时空特征,【方法】以SWAT(Soil and Water Assessment Tool)流域面源污染模型为基础,选取代表性水文系列,结合入库污染负荷计算模型,构建了污染负荷量及入库强度的面源污染关键源区识别技术流程,并在数据条件较为完备的沙河水库流域进行验证。【结果】结果表明:沙河水库流域总氮(Total Nitrogen,TN)入库负荷总量为198.34 t/a,面源污染占比为86.53%,流域内茶园TN负荷量贡献率最大,占比为23.84%;TN负荷量在丰水年和特丰水年比枯水年上升58.06%和289.09%,在年内丰水期TN月均负荷量比平水期和枯水期分别高出75.24%和372.51%;河道削减TN负荷量为33.58 t/a,削减比例为14.48%;子流域TN入库产污强度变化范围为0.36~4.73 t/km^(2)。面源污染排放入库低值区主要位于流域南部,高值区主要位于近库区域,沙河西和沙河东控制分区单位面积TN入库强度显著高于流域南部。【结论】针对高产污地类、高产污区域及高产污时段应提高面源污染防控力度;建立的技术流程可有效识别和科学解析流域面源污染关键源区,为流域水环境开展面源污染防治和生态适应性开发提供一定技术支持,使相关工作开展更加有的放矢。
