生态退耕区种植业面源污染潜在风险变化分析——以宁夏盐池县为例  

POTENTIAL RISK OF NON-POINT SOURCE POLLUTION IN ECOLOGICAL RE-FARMING REGION

作　　者：王秀红[1] 申建秀[1,2] 张伟[3] 

机构地区：[1]中国科学院地理科学与资源研究所 [2]中国科学院研究生院 [3]杭州师范大学遥感与地球科学研究院

出　　处：《中国农业资源与区划》2012年第4期31-35,共5页Chinese Journal of Agricultural Resources and Regional Planning

基　　金：国家自然科学基金项目"生态退耕对土地类型结构的影响及环境效应研究(40971282)"(2010-2012)

摘　　要：以不断增加农资投入的方式提高耕地单产,是西部生态退耕区为缓解因耕地数量减少所导致的农作物总产量下降所采取的重要举措,但种植业面源污染潜在风险随之加重。如果不重视这种风险,生态退耕的作用将会被环境污染所抵消,使生态退耕区面临生态退化和环境污染的双重压力。该文以宁夏盐池县为例,利用能值分析探讨西部生态退耕区1998～2008年期间的种植业面源污染潜在风险的变化特征。建议西部生态退耕区的农资投入应限制数量、提高质量和利用率,并不断加强产地环境监测;种植业的可持续发展应该注重生态农业和有机农业的发展。Crop total yield usually reduced partly because of the grain for green policy in the western ecological refarming region, which directly affected the survival and income of local people. Local farmers usually increased agricultural materials in order to increase yield of per unit cropland area for growing population and increasing food demand, resulting in serious crop planting potential non-point source pollution. If the situation cannot be controlled, the function and effect of ecological re-farming will be reduced, and Western China will be under pressure from both ecological fragili paper analyzed the change ty and environmental pollution. Taking Yanchi County in Ningxia as a study area, this of potential risk of non-point source pollution in ecological re-farming region during 1998 2008 based on energy analysis. Some suggestions were hence put forward including reducing the agricultural materials input, improving the rate of utilization, enhancing the monitoring of produce area environment, and strengthening on the sustainable development of ecological agriculture and organic agriculture.

关 键 词：生态退耕 种植业面源污染 能值分析 宁夏盐池县 

分 类 号：X592[环境科学与工程—环境工程]