基于GIS和NFM的园地多宜性评价研究

以江西省鄱阳湖经济区园地为研究对象,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,采用加权平均模型对各评价单元的柑橘和雪梨2种作物的生态位适宜度值进行定量分析.结果表明:研究区域生态位适宜度值整体较高,生境条件基本能满足作物的需求;柑橘、雪梨以2、3级为主,分别占84.52%、78.26%;综合评价中柑橘的适宜性种植面积最广,达到63.98%,不适宜占1.69%.为指导农业生产实践、促进园地的合理开发利用与管理提供参考.

Application of Niche-Fitness Model into Multi-Suitability Evaluation of Garden Land Based on GIS

The garden 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 mean of weighted average was adopted to quantitative analysis of niche - fitness for orange and pear. The result shows that the niche - fitness value in the area is higher in general and habitat conditions in the region can basically meet the requirements of the crops; the garden land in grade 2 and 3 of orange and pear accounts for 84.52% , 78.26% respectively; in terms of area of niche - fitness,orange ranks first with the ratio amounting to 63.98% , area of ill - suited accounts for 1. 69%.The results provide direct application in supervision of agricultural production, and promoted reasonable utilization and scientific management of garden land.