卤阳湖盐碱治理区农业生态系统健康评价  

Agroecosystem health assessment on the saline-alkali district in Luyang Lake

作　　者：潘茸花[1] 李新平[2] 李素俭[3] 韩静[2] 刘敬美[1] 

机构地区：[1]西北农林科技大学林学院,陕西杨凌712100 [2]西北农林科技大学资源环境学院,陕西杨凌712100 [3]西北农林科技大学生命科学学院,陕西杨凌712100

出　　处：《干旱地区农业研究》2016年第4期237-243,共7页Agricultural Research in the Arid Areas

基　　金：亚洲发展银行项目"渭南卤阳湖盐碱地综合治理项目"

摘　　要：从生态系统活力、组织结构、恢复力三个方面构建农业生态系统健康评价指标体系,通过层次分析法(AHP)确定指标权重,采用综合指数法计算卤阳湖地区农业生态系统健康指数并结合评价标准进行分析。结果表明:2012年卤阳湖盐碱治理区农业生态系统健康综合评价值为5.772,介于Ⅱ级和Ⅲ级之间,偏亚健康状态,生态系统活力、组织结构和恢复力都存在不同程度的问题。经过分析发现制约卤阳湖盐碱治理区农业发展的因素主要有人口密集且整体素质较低、土地资源紧张、水土流失严重、自然资源过度开发、农业产业单一、生产方式落后等。This research established an index system of agroecosystem health assessment by analyzing vigor,organic structure and resilience of the agroecosystem. The index weight was calculated through the analytic hierarchy process（ AHP）. Finally,comprehensive index method was used to calculate the ecosystem health index and analyze the health level by the evaluation standard. The results showed that in 2012,the agroecosystem health comprehensive evaluation value of Luyang lake saline-alkali district was 5. 772,which was between grade II and III（ means partial sub-healthy state）. There were some problems for each index at different scales. The main factors that restricted the development of agriculture in Luyang lake district included large density and the low overall quality of the population,the lack of land resource,serious soil erosion,over exploitation of natural resources,single agricultural industry and backward production mode.

关 键 词：卤阳湖盐碱治理区 农业生态系统 指标体系 生态系统健康评价 

分 类 号：X171.4[环境科学与工程—环境科学]