长江流域资源与环境 >> 2016, Vol. 25 >> Issue (12): 1860-1869.doi: 10.11870/cjlyzyyhj201612009
陈诚1,2, 林晨1,2
CHEN Cheng1,2, LIN Chen1,2
摘要: 耕地质量监测与评估研究是我国耕地保护工作的重要支撑。针对苏南地区耕地保护面临的新问题,整合农用地分等定级、多目标地球化学调查和土壤侵蚀等相关研究资料,重构耕地综合质量评估指标体系,综合运用空间分析、加权综合和聚类分析方法,根据耕地基础地力、耕地健康和耕地外部环境的空间分异和组合特征,识别优先保护、地力提升、污染治理和水土保持等耕地类型,分类讨论耕地保护与整治路径。分析表明:苏南地区现状耕地中,优质耕地占比不足65%,近30%的耕地基础地力较差,超过5%的耕地受到水土流失、重金属污染威胁。其中,优质耕地集中于茅山以东的太湖平原和沿江平原地区,茅山以西地区基础地力相对较差,宁镇沿江、太湖东北岸部分地区土壤重金属污染和水土流失风险较高,需要因地制宜开展地力提升、土壤修复、水土保持和农业结构调整等治理措施,以增强地产农产品质量安全。
中图分类号:
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