摘要
农业生态经济系统健康是农业生态系统的综合特征,是实现流域农业可持续发展的重要保障。根据左江流域农业生态经济系统的特点和农业生态系统健康的内涵,从结构、功能和响应三方面选取人均基本农田、人均水资源量、劳动力集约度、耕地占土地面积比例、经济作物播种面积比例等20个指标,构建左江流域农业生态经济系统健康的评价指标体系。应用均方差法、多目标线性加权函数法等多种方法和手段,在流域尺度上对左江流域8个农业生态区进行农业生态系统健康评价。结果显示:处在"较健康"状态的是上思和凭祥;处在"亚健康"状态的是宁明、大新、龙州、扶绥、天等和江州区。左江流域农业生态经济系统健康综合评价结果的排名由高到低依次为:上思、凭祥、宁明、天等、大新、扶绥县、龙州和江州区。
Agroecosystem with many comprehensive characteristics can be assessed through the measurement of its structure,function and response.Agroecosystem is very important to realize healthy development of ecoagriculture.Based on the meaning of ecosystem health and the characteristics of agroecosystem,an assessment index system for agroecosystem in Zuojiang Basin was formed from the structure,function and response.The indexes included average per person basic farmland,average per person water amount of resources,labor force collection measure,farming accounts for land area proportion,industrial crop sown area.Then with various methods and means such as mean square method of difference,multi-objective linear weighting function method and so the healthy state of the eight agricultural eco-zones in Zuojiang Basin was assessed.The results were as follows：the agroecosystem in Shangsi and Pingxiang were＂healthy＂,Ningming,Daxin,Longzhou,Fusui,Tiandeng,Jiangzhou were＂sub healthy＂.The order from the best to the worst,among the eight agricultural eco-zones in Zuojiang Basin was Shangsi,Pingxiang,Ningming,Tiandeng,Daxin,Fusui,Longzhou,and Jiangzhou.
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2010年第2期403-410,共8页
Acta Agriculturae Universitatis Jiangxiensis
基金
国家自然科学基金项目(40761027)
