【摘要】 西藏作为国家生态安全屏障,其农业面源污染治理对我国生态环境保护具有重要意义。本研究基于利用单元调查法核算的2000-2016年西藏农业面源污染排放量数据,定量分析其与农业经济增长之间的EKC关系,并定性分析其驱动因素。研究表明:(1)西藏总氮排放量与农业经济增长之间的EKC曲线以及总磷排放量与农业经济增长之间的EKC曲线均为N形,即西藏农业面源污染排放量可能呈现"先上升——后下降——再次上升"的趋势。(2)西藏农业面源污染主要受到农业生产结构、农业技术进步、农村人口规模和农业面源污染防治政策等因素的影响,这4个因素分别对其产生正向、负向、正向和负向影响。西藏农业面源污染治理需要从3个方面着手:加强农业面源污染治理政策创设,实行以正面激励和奖励手段为主的区别性农业面源污染防治政策;制定西藏农业面源污染防治技术集成创新方案;提高西藏农牧民的环境保护意识。更多还原

【Abstract】 As the national ecological security barrier, Tibetan agriculture non-point source pollution control and eco-environmental protection are of great strategic significance for the sustainable development of agriculture in China. Based on the agricultural non-point pollution source information calculation during 2000～2016 in Tibet, the EKC relationship between agricultural non-point pollution and agricultural economic growth and its driving factors were analyzed. The results indicated that total nitrogen(TN) and total phosphorus(TP) emissions in Tibet both had N shape relationship with agricultural economic growth, meaning a trend of first increase then decrease and then increase. The driving factors of agricultural non-point source pollution in Tibet mainly included four aspects: agricultural structure, agricultural technology progress, rural population scale and control of agricultural non-point source pollution policies,which had positive, negative, positive and negative impacts on it. In order to combat the harnessing battle of agricultural non-point source pollution in Tibet, it is necessary to strengthen the creation of agricultural non-point source pollution control policies, implement differentiated policies with positive incentives; formulate an integrated innovation scheme of agricultural non-point source pollution control technology; and improve the environmental protection awareness of farmers and herdsmen in Tibet.更多还原