摘要
以江西省鄱阳湖及周边经济区耕地为研究对象,将生态位适宜度方法以及克里格插值法引入到多宜性评价研究中,采用加权平均模型和限制因子模型对各评价单元水稻、油菜、棉花和甘薯4种作物的生态适宜度值及限制性生态因子进行了定量分析,结果表明:研究区生态位适宜度值整体较高,最大值达到0.9824,生境条件基本能满足作物的需求; 评价结果水稻、油菜和棉花以1、2级为主,所占面积均达到67%以上,甘薯1、2级地占56.9%;综合评价中水稻的适宜性面积最大,达56.1%,棉花次之;限制该地区耕地生产潜力的生态因子主要为:土壤全磷含量、有机质含量、耕作层厚度。该研究结果能直接指导农业生产实践,促进耕地的合理利用与管理。
The cultivated land in Poyang Lake region and its surrounding area of Jiangxi province was selected for multi-suitability evaluation by introducing the niche-fitness theory and Kriging method.The means of weighted average and limiting factor models were adopted to quantitative analyze niche-fitness and restrictive factors for rice,rape,cotton and sweet potato.The result shows that the niche-fitness value in the area is higher in general with the peak value reaching 0.9824,and habitat conditions in the regio...
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2009年第2期208-213,318,共7页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家自然科学基金项目(30760048)
