The geological characteristics of coalbed methane from the research carried out in Liupanshui is based on analysis of faults, folds, roof and floor lithology, and depth of coal seam gas content, combined with the asse...The geological characteristics of coalbed methane from the research carried out in Liupanshui is based on analysis of faults, folds, roof and floor lithology, and depth of coal seam gas content, combined with the assessment of CBM resources calculated through buried depth scope, average coal seam thickness, and gas content, organized by the Ministry of Land and Resources in 2006, which launched the ＂national new round of coalbed methane re-sources evaluation＂ project to evaluate the coalbcd methane resources in the standard category and divided coal-bed methane resources into Ⅰ, Ⅱand Ⅲ Category of three resources categories. With this method on the other syncline to resources assessment, the area below 1 000 m is named as ] Category resources. And with the depth increasing, resources level decreases.展开更多
[Objective] The paper aimed to analyze the meteorological factors of the worst drought in 2010 in Liupanshui City and its impact on the agriculture.[Method] To make research analyses based on the real-time meteorologi...[Objective] The paper aimed to analyze the meteorological factors of the worst drought in 2010 in Liupanshui City and its impact on the agriculture.[Method] To make research analyses based on the real-time meteorological data and the characters of this drought disaster.[Result]Due to the influence of abnormal atmospheric circulation and El Nio events,the convergence of warm and cold air in the arid are inadequate,so the rainfall reduced seriously,shortage of water resources,and successive drought disasters were intensified by hot and dry weather,moreover,special geographical environment(Karst,desertification,etc.)increased the danger of drought.[Conclusion] Local people faced the test of the severest drought in a century which had great impact on drinking water,agriculture,forestry,hydropower production,residents living and so on.Taking advantage of favorable meteorological conditions for artificial rainfall,and combined with scientific drought-relief measures could help to east the drought in advance and reduce the losses.展开更多
[Objective] The aim was to study the characteristics of temperature changes in Liupanshui in recent 50 years. [Method] Based on the monthly temperature data from 3 observational stations in Liupanshui from 1960 to 200...[Objective] The aim was to study the characteristics of temperature changes in Liupanshui in recent 50 years. [Method] Based on the monthly temperature data from 3 observational stations in Liupanshui from 1960 to 2009 and by employing the linear method and Mann-Kendall method, features and abrupt changes of temperature in Liupanshui were discussed. [Result] The results indicated the temperature in Liu Panshui increased obviously in recent 50 years at a rate of 0.096 ℃/10 a. Average temperature in spring was decreasing, but was increasing in summer, autumn and winter at different rate. The average temperature changed the most in winter, followed by summer and autumn and changed the least in spring. The temperature changes were not distinct before the early 1980s. Temperature increased significantly after 80s, having distinct waving nature and several mutation points. The distinct mutation point appeared in 1978 and the annual average temperature increased significantly after 1978. There was no obvious mutation of temperature in spring; the mutation points of temperature in summer, autumn and winter were 1978, 1982 and 1985. [Conclusion] The study provided reference for the short term forecast of climate in Liupanshui City.展开更多
[Objective] The research aimed to study the variation rule of precipitation in the rainy season in Liupanshui City in recent 50 years. [Method] Based on the monthly precipitation data from three observatories (Liuzhi,...[Objective] The research aimed to study the variation rule of precipitation in the rainy season in Liupanshui City in recent 50 years. [Method] Based on the monthly precipitation data from three observatories (Liuzhi, Panxian and Shuicheng) of Liupanshui City from May to September during 1960-2009, the interannual, interdecadal variation and mutation characteristics of precipitation in the rainy season in Liupanshui City in recent 50 years were analyzed by using the linear tendency estimation, sliding T-test and Morlet wavelet analysis method. [Result] The rainfall in the rainy season in Liupanshui City in recent 50 years presented the decline trend, and the linear tendency rate was -15.4 mm/10 a. The precipitation in the rainy season in Liupanshui City had the obvious interannual and interdecadal variation characteristics. It was the obvious rainless period in the metaphase of 1960s, and the precipitation was comparatively more in late 1960s. It was the relatively rainless period in the whole 1970s. From late 1970s to late 1980s, the precipitation in the rainy season entered into the pluvial period, and it was the period when the precipitation was the most in recent 50 years. The precipitation was relatively less from late 1980s to metaphase of 1990s. It was the pluvial period in the middle and late periods of 1990s, and it was the rainless period when entered into the 21st century. The sliding T-test showed that the precipitation mutation point in the rainy season in Liupanshui City in recent 50 years was in 2002. The wavelet analysis showed that the precipitation in the rainy season in Liupanshui City had the significant multiple time scale characteristic. In the interdecadal scale, the precipitation had the significant 16-year periodic oscillation which stably existed in 50 years. In the interannual scale, the precipitation had the quasi-8-year periodic oscillation. [Conclusion] The research provided the scientific basis for the accurate forecast of drought and flood disasters, disaster prevention and reduction in the city.展开更多
Karst rocky desertification mountain areas are regarded as main positions to wipe out poverty for their large poverty population,wide poverty area,high rate of poverty,etc. This paper takes Liupanshui city as an examp...Karst rocky desertification mountain areas are regarded as main positions to wipe out poverty for their large poverty population,wide poverty area,high rate of poverty,etc. This paper takes Liupanshui city as an example where the situation of rocky desertification is very serious. We build the indicator system of poverty alleviation and development by analyzing their poverty and using the AHP method and also find the limiting factors which restrict the development of this area then put forward the recommendations to alleviate poverty.展开更多
基金Supported by the National ＂973＂ CBM project （2009CB219605） the National Science and Technology of major special projects （201 IZX05034）： the National Natural Science Foundation of China （40730422）
文摘The geological characteristics of coalbed methane from the research carried out in Liupanshui is based on analysis of faults, folds, roof and floor lithology, and depth of coal seam gas content, combined with the assessment of CBM resources calculated through buried depth scope, average coal seam thickness, and gas content, organized by the Ministry of Land and Resources in 2006, which launched the ＂national new round of coalbed methane re-sources evaluation＂ project to evaluate the coalbcd methane resources in the standard category and divided coal-bed methane resources into Ⅰ, Ⅱand Ⅲ Category of three resources categories. With this method on the other syncline to resources assessment, the area below 1 000 m is named as ] Category resources. And with the depth increasing, resources level decreases.
文摘[Objective] The paper aimed to analyze the meteorological factors of the worst drought in 2010 in Liupanshui City and its impact on the agriculture.[Method] To make research analyses based on the real-time meteorological data and the characters of this drought disaster.[Result]Due to the influence of abnormal atmospheric circulation and El Nio events,the convergence of warm and cold air in the arid are inadequate,so the rainfall reduced seriously,shortage of water resources,and successive drought disasters were intensified by hot and dry weather,moreover,special geographical environment(Karst,desertification,etc.)increased the danger of drought.[Conclusion] Local people faced the test of the severest drought in a century which had great impact on drinking water,agriculture,forestry,hydropower production,residents living and so on.Taking advantage of favorable meteorological conditions for artificial rainfall,and combined with scientific drought-relief measures could help to east the drought in advance and reduce the losses.
文摘[Objective] The aim was to study the characteristics of temperature changes in Liupanshui in recent 50 years. [Method] Based on the monthly temperature data from 3 observational stations in Liupanshui from 1960 to 2009 and by employing the linear method and Mann-Kendall method, features and abrupt changes of temperature in Liupanshui were discussed. [Result] The results indicated the temperature in Liu Panshui increased obviously in recent 50 years at a rate of 0.096 ℃/10 a. Average temperature in spring was decreasing, but was increasing in summer, autumn and winter at different rate. The average temperature changed the most in winter, followed by summer and autumn and changed the least in spring. The temperature changes were not distinct before the early 1980s. Temperature increased significantly after 80s, having distinct waving nature and several mutation points. The distinct mutation point appeared in 1978 and the annual average temperature increased significantly after 1978. There was no obvious mutation of temperature in spring; the mutation points of temperature in summer, autumn and winter were 1978, 1982 and 1985. [Conclusion] The study provided reference for the short term forecast of climate in Liupanshui City.
文摘[Objective] The research aimed to study the variation rule of precipitation in the rainy season in Liupanshui City in recent 50 years. [Method] Based on the monthly precipitation data from three observatories (Liuzhi, Panxian and Shuicheng) of Liupanshui City from May to September during 1960-2009, the interannual, interdecadal variation and mutation characteristics of precipitation in the rainy season in Liupanshui City in recent 50 years were analyzed by using the linear tendency estimation, sliding T-test and Morlet wavelet analysis method. [Result] The rainfall in the rainy season in Liupanshui City in recent 50 years presented the decline trend, and the linear tendency rate was -15.4 mm/10 a. The precipitation in the rainy season in Liupanshui City had the obvious interannual and interdecadal variation characteristics. It was the obvious rainless period in the metaphase of 1960s, and the precipitation was comparatively more in late 1960s. It was the relatively rainless period in the whole 1970s. From late 1970s to late 1980s, the precipitation in the rainy season entered into the pluvial period, and it was the period when the precipitation was the most in recent 50 years. The precipitation was relatively less from late 1980s to metaphase of 1990s. It was the pluvial period in the middle and late periods of 1990s, and it was the rainless period when entered into the 21st century. The sliding T-test showed that the precipitation mutation point in the rainy season in Liupanshui City in recent 50 years was in 2002. The wavelet analysis showed that the precipitation in the rainy season in Liupanshui City had the significant multiple time scale characteristic. In the interdecadal scale, the precipitation had the significant 16-year periodic oscillation which stably existed in 50 years. In the interannual scale, the precipitation had the quasi-8-year periodic oscillation. [Conclusion] The research provided the scientific basis for the accurate forecast of drought and flood disasters, disaster prevention and reduction in the city.
基金Supported by National Natural Science Foundation of China(71163007)National Science and Technology Project in the Twelfth Five-Year Plan Period(2011BAC09B01)
文摘Karst rocky desertification mountain areas are regarded as main positions to wipe out poverty for their large poverty population,wide poverty area,high rate of poverty,etc. This paper takes Liupanshui city as an example where the situation of rocky desertification is very serious. We build the indicator system of poverty alleviation and development by analyzing their poverty and using the AHP method and also find the limiting factors which restrict the development of this area then put forward the recommendations to alleviate poverty.
