The grey forecast and the sustainable use evaluation are conducted on the data of farmland resources from 2010 to 2020 in Pingingshan City by using the area of farmland land from 1999 to 2010 and by applying the grey ...The grey forecast and the sustainable use evaluation are conducted on the data of farmland resources from 2010 to 2020 in Pingingshan City by using the area of farmland land from 1999 to 2010 and by applying the grey forecast and land pressure system.The results show that from 2010 to 2020 the quantity of farmland resources maintains balance;the minimum per capita farmland in Pingdinshan stays around the lower limit of per capita amount of farmland in China;the pressure of farmland is rather huge and the farmland protection is not so optimistic.Therefore,in order to realize the sustainable use of land resources in Pingdinshan City,the government should try to improve the efficiency of farmland use and implement stricter land protection system.as well as the requisition-compensation balance of farmland resources,land consolidation and land reclaimation and so on.展开更多
The karst groundwater of Cambrian limestone may become an important water source for industry and agriculture in the Pingdingshan area,and is also a potential threat to mining safety.Therefore,to find out the origin,f...The karst groundwater of Cambrian limestone may become an important water source for industry and agriculture in the Pingdingshan area,and is also a potential threat to mining safety.Therefore,to find out the origin,flow paths,and hydrogeochemical processes of karst groundwater beneath the Pingdingshan coalfield,a total of 16 water samples were collected.Our findings confirmed that the karst groundwater is mainly recharged by precipitation.The precipitation can directly supply the deep aquifer of the karst water system through the southwest limestone outcrops,and this area mostly includes the southern part of mines No.11,No.9,and the hidden outcrops in the southern part of mine No.2.What is more,the areas adjacent to the synclinal axis,including mines No.10,No.12,and No.8,may be the main discharge areas.A mixing model of^(87)Sr/^(86)Sr and Sr showed that in the southwest Pingdingshan coalfield,the proportion of precipitation decreased gradually from the recharge area to the discharge area,ranging from 89.1%to 17.1%.Besides,the northeast Pingdingshan coalfield is another recharge area for the whole karst system,thus,the infiltrating groundwater will indirectly supply the deep aquifer through Quaternary deposition near the mine No.13.Our research results can provide theoretical support for the prevention and control of groundwater disasters and the development and utilization of regional groundwater resources in the coalfield in Northern China.展开更多
Several approaches including hydrogeochemistry and isotope hydrogeology have been used to investigate the karst groundwater systems at Pingdingshan coalfield in recent years. The results of the modeling and evaluation...Several approaches including hydrogeochemistry and isotope hydrogeology have been used to investigate the karst groundwater systems at Pingdingshan coalfield in recent years. The results of the modeling and evaluation of groundwater chemistry, as parts of recent research progress at the area, are presented. The characteristics of Cambrian karst groundwater flow was analyzed in terms of tritium distribution of groundwater based on the fact that the Guodishan fault, the largest one within the coalfield, is divided into permeable (southern and northern) and impermeable (middle) sections. The evolution of groundwater chemistry, the suitability of geothermometers and the feature of karst development were deduced and discussed using the speciation modeling and mass balance approach.展开更多
目的分析2019年平顶山市疑似预防接种异常反应(Adverse Events Following Immunization,AEFI)监测情况,评估平顶山市疫苗接种的安全性,为后续AEFI监测工作提供相应的指导。方法收集2019年平顶山市疫苗接种数据和AEFI数据,并以描述性流...目的分析2019年平顶山市疑似预防接种异常反应(Adverse Events Following Immunization,AEFI)监测情况,评估平顶山市疫苗接种的安全性,为后续AEFI监测工作提供相应的指导。方法收集2019年平顶山市疫苗接种数据和AEFI数据,并以描述性流行病学的方式统计出平顶山市AEFI的分布特点。结果2019年平顶山市10个县(市)区共报告AEFI个案791例,其中一般反应749例(94.69%),排在前3位的疫苗分别为百白破疫苗(无细胞)、麻腮风疫苗、乙脑疫苗(减毒);异常反应40例(5.06%);偶合症2例(0.25%)。一般反应中常见发热、红肿、硬结,异常反应中常见过敏反应;AEFI病例以2岁以下儿童为主,共550例(69.53%);严重异常反应有热性惊厥、晕厥、血小板减少性紫癜、癫痫、卡介苗淋巴结炎。结论2019年平顶山市AEFI以一般反应为主,AEFI主要集中于鲁山县、叶县、卫东区3个地区,疫苗具有较高的安全性,需要提高AEFI监测系统的敏感性。展开更多
生态用地对城市生态安全具有重要意义,关键性生态用地的识别与安全格局的构建是实现城市精明增长和生态保护的重要途径。以河南省平顶山新区为例,结合GIS(Geographic Information System)空间技术,分析得到基于水资源安全、地质灾害规...生态用地对城市生态安全具有重要意义,关键性生态用地的识别与安全格局的构建是实现城市精明增长和生态保护的重要途径。以河南省平顶山新区为例,结合GIS(Geographic Information System)空间技术,分析得到基于水资源安全、地质灾害规避、生物多样性保护三种单一过程的生态用地,进而综合叠加并重分类为理想型、缓冲型和底线型三类生态用地,并以底线型生态用地为源,现状土地覆被为阻力因子,应用最小累积阻力模型构建了平顶山新区生态用地的安全格局。结果表明:新区内最小生态用地,即底线型生态用地的面积为88.44 km2,占研究区总面积的29.35%;缓冲型和理想型生态用地的面积分别为22.28 km2和43.87 km2。确定了三种安全水平的生态用地范围、"源"与外部联系的辐射道、"源"间连接的生态廊道、关键的生态节点等。关键性生态用地综合安全格局的构建,旨在为研究区城市生态规划和城镇空间布局规划等提供科学参考。展开更多
基金Supported by the Key Projects of Science and Technology Plan of Henan Province(102102310299)The Research Fund for Youth inPingdingshan University(2008046)
文摘The grey forecast and the sustainable use evaluation are conducted on the data of farmland resources from 2010 to 2020 in Pingingshan City by using the area of farmland land from 1999 to 2010 and by applying the grey forecast and land pressure system.The results show that from 2010 to 2020 the quantity of farmland resources maintains balance;the minimum per capita farmland in Pingdinshan stays around the lower limit of per capita amount of farmland in China;the pressure of farmland is rather huge and the farmland protection is not so optimistic.Therefore,in order to realize the sustainable use of land resources in Pingdinshan City,the government should try to improve the efficiency of farmland use and implement stricter land protection system.as well as the requisition-compensation balance of farmland resources,land consolidation and land reclaimation and so on.
基金granted by the National Natural Science Foundation of China(42102297,41972254)Innovative Science and Technology Talents Team Construction Project of Henan Province(CXTD2016053)+2 种基金China Postdoctoral Science Foundation(2021M701098)Special Funds for Higher Education Basic Scientific Research Funds of Henan Province(NSFRF200103NSFRF210304)。
文摘The karst groundwater of Cambrian limestone may become an important water source for industry and agriculture in the Pingdingshan area,and is also a potential threat to mining safety.Therefore,to find out the origin,flow paths,and hydrogeochemical processes of karst groundwater beneath the Pingdingshan coalfield,a total of 16 water samples were collected.Our findings confirmed that the karst groundwater is mainly recharged by precipitation.The precipitation can directly supply the deep aquifer of the karst water system through the southwest limestone outcrops,and this area mostly includes the southern part of mines No.11,No.9,and the hidden outcrops in the southern part of mine No.2.What is more,the areas adjacent to the synclinal axis,including mines No.10,No.12,and No.8,may be the main discharge areas.A mixing model of^(87)Sr/^(86)Sr and Sr showed that in the southwest Pingdingshan coalfield,the proportion of precipitation decreased gradually from the recharge area to the discharge area,ranging from 89.1%to 17.1%.Besides,the northeast Pingdingshan coalfield is another recharge area for the whole karst system,thus,the infiltrating groundwater will indirectly supply the deep aquifer through Quaternary deposition near the mine No.13.Our research results can provide theoretical support for the prevention and control of groundwater disasters and the development and utilization of regional groundwater resources in the coalfield in Northern China.
文摘Several approaches including hydrogeochemistry and isotope hydrogeology have been used to investigate the karst groundwater systems at Pingdingshan coalfield in recent years. The results of the modeling and evaluation of groundwater chemistry, as parts of recent research progress at the area, are presented. The characteristics of Cambrian karst groundwater flow was analyzed in terms of tritium distribution of groundwater based on the fact that the Guodishan fault, the largest one within the coalfield, is divided into permeable (southern and northern) and impermeable (middle) sections. The evolution of groundwater chemistry, the suitability of geothermometers and the feature of karst development were deduced and discussed using the speciation modeling and mass balance approach.
文摘目的分析2019年平顶山市疑似预防接种异常反应(Adverse Events Following Immunization,AEFI)监测情况,评估平顶山市疫苗接种的安全性,为后续AEFI监测工作提供相应的指导。方法收集2019年平顶山市疫苗接种数据和AEFI数据,并以描述性流行病学的方式统计出平顶山市AEFI的分布特点。结果2019年平顶山市10个县(市)区共报告AEFI个案791例,其中一般反应749例(94.69%),排在前3位的疫苗分别为百白破疫苗(无细胞)、麻腮风疫苗、乙脑疫苗(减毒);异常反应40例(5.06%);偶合症2例(0.25%)。一般反应中常见发热、红肿、硬结,异常反应中常见过敏反应;AEFI病例以2岁以下儿童为主,共550例(69.53%);严重异常反应有热性惊厥、晕厥、血小板减少性紫癜、癫痫、卡介苗淋巴结炎。结论2019年平顶山市AEFI以一般反应为主,AEFI主要集中于鲁山县、叶县、卫东区3个地区,疫苗具有较高的安全性,需要提高AEFI监测系统的敏感性。
