An approach of dividing key control area for soil and water loss at the county scale
LI Zixuan, ZOU Haitian, ZHAO Hui, QI Jianhuai
1. Soil and Water Conservation Monitoring Center of Haihe Basin, 300170, Tianjin, China;
2. Monitoring Center of Soil and Water Conservation, Ministry of Water Resources, 100053, Beijing, China
Abstract：[Background] Forty national key prevention and control regions for soil and water loss were divided in China according to National Plan on Soil and Water Conservation (2015-2030), involving 1091 counties, with a total county area of 49.805×108 km2,which was approved by the State Council of the People's Republic of China in 2015. The key control area is 4.944×108 km2, but its specific scope has not been defined up to now. Due to this, key regionalization of prevention and control of soil erosion and water loss are affected on provincial and county levels. Thus studying a dividing method of key control area at the county scale for national key prevention and control region is necessary.[Methods] We used ArcGIS to study the dividing method of the key control area in Pingshan county, Hebei province. Before the research, we collected the results of national key regionalization of prevention and control of soil erosion and water loss, township-level divisions of Pingshan county, land use, vegetation coverage and soil erosion. Next, we selected the quantitative and qualitative indexes for analysis. At last, We divided the key control area in Pingshan county by the unit of township district and small watershed partly, and discussed contrastively between the results of study and the reference value of Pingshan county which had been rechecked and provided in National Plan on Soil and Water Conservation (2015-2030).[Results] According to quantitative index, the divided key control area based on the unit of township district was 1 358.81 km2, and the divided key control area based on the unit of small watershed was 1 273.61 km2. The results were all greater than the reference value. And area ratio of sloping land had no reference significance. Instead, the result (1 126.44 km2) was close to the reference value (1 106.80 km2) and reasonably distributed, the quantitative and qualitative indexes were considered comprehensively and were superimposed over the unit of township district and small watershed.[Conclusions] The division of the national key control area of soil and water loss is an important basic work. Firstly, the comprehensive, scientific and operable index system should be constructed. Secondly, the relatively suitable division unit should be selected, which follows the principle demand such as relative centralization. Thirdly, priority should be given to dividing key control area of soil and water loss at the national level, and the division of key control area at the provincial level and below should be carried out under its guidance. Fourthly, the national key control area should be adjusted and managed regularly through dynamic monitoring of soil and water loss.
李子轩1, 邹海天1, 赵辉2, 齐建怀1. 县域尺度水土流失重点治理区域划定方法[J]. 中国水土保持科学, 2018, 16(6): 56-63.
LI Zixuan, ZOU Haitian, ZHAO Hui, QI Jianhuai. An approach of dividing key control area for soil and water loss at the county scale. SSWC, 2018, 16(6): 56-63.
王海燕,赵永军.关于水土流失重点防治区划分标准的几个技术问题探讨[J].中国水土保持,2015(12):61. WANG Haiyan, ZHAO Yongjun. Discuss on several problems of the division standard of key prevention and control region for soil and water loss[J]. Soil and Water Conservation in China, 2015(12):61.
[2]
赵永军.水土流失重点防治区划分刍议[J].中国水土保持,2012(5):4. ZHAO Yongjun. Discuss on division of key prevention and control region for soil and water loss[J].Soil and Water Conservation in China, 2012(5):4.
[3]
张利超,谢颂华.江西省水土流失重点防治区的复核和划分[J].水土保持通报,2016,36(1):230. ZHANG Lichao, XIE Songhua. Recheck and division of key prevention and control region for soil and water loss in Jiangxi province[J]. Bulletin of Soil and Water Conservation, 2016,36(1):230.
[4]
顾再柯,杨光檄,李勇,等.贵州省水土流失重点预防区和重点治理区划分标准与方法[J].中国水土保持,2016(1):37. GU Zaike, YANG Guangxi, LI Yong, et al. The division standard and method of key prevention and control region for soil and water loss in Guizhou province[J]. Soil and Water Conservation in China, 2016(1):37.
[5]
张洋,彭瑶,刘竞妍,等.江苏省水土流失重点防治区划分[J].水土保持通报,2014,34(2):300. ZHANG Yang,PENG Yao,LIU Jingyan, et al. Regionalization of key prevention and control region of soil and water loss in Jiansu Province[J]. Bulletin of Soil and Water Conservation, 2014,34(2):300.
[6]
袁瀛,郝惠莉,马宁,等.陕西省水土流失重点防治区的划分方法及指标体系[J].水土保持通报,2017,37(5):333. YUAN Ying, HAO Huili, MA Ning, et al. Division method and index system of key prevention and control region of soil and water loss in Shaanxi Province[J]. Bulletin of Soil and Water Conservation, 2017,37(5):333.
[7]
李世荣,钟莉,沈涛,等.北京市水土流失重点防治区复核划分研究[J].中国水土保持,2016(5):52 LI Shirong, ZHONG Li, SHEN Tao, et al. The study on recheck and division of key prevention and control region for soil and water loss in Beijing Province[J].Soil and Water Conservation in China, 2016(5):52.
[8]
王巧红,熊波,张君.基于GIS监测技术的宜宾县水土流失重点防治区划分应用与研究[J].通讯世界,2017(7):282. WANG Qiaohong, XIONG Bo, ZHANG Jun. The division application and study on key prevention and control region for soil and water loss in Yibin county Based on GIS[J]. Telecom World,2017(7):282.
[9]
杨世凡,孙泉忠,宁茂岐,等.县级水土流失重点防治区划分研究[J].中国水土保持,2016(6):31. YANG Shifan, SUN Quanzhong, NING Maoqi, et al. The study on division of key prevention and control region for soil and water loss in county-level area[J],Soil and Water Conservation in China, 2016(6):31.
[10]
蒲朝勇.贯彻落实十九大精神做好新时代水土保持工作[J].中国水土保持,2017(12):1. PU Chaoyong. Carrying out the nineteen spirits and doing the work of soil and water conservation in the new era[J].Soil and Water Conservation in China, 2017(12):1.
[11]
国家级水土流失重点防治区复核划分技术导则(试行)[S].北京:水利部水利水电规划设计总院,2012. Technicalguidance of recheck and division of national key prevention and control region for soil and water loss[S].Beijing:General Institute of Water Resources and Hydropower Planning and Design of the Ministry of Water Resources,2012.
2018, Vol. 16 
