期刊论文

中文

长江流域资源与环境

1004-8227

2012

21

8

1000-1005

(40801078):国家自然科学基金项目 :华中师范大学中央高校基本科研业务费项目

本校为第一机构

生态位适宜度是对经典生态位理论和方法的深化与发展,在合理优化和发挥作物、环境最大共生效应,及农业结构调整和布局中具有重要的理论和实际意义。以宜昌市夷陵区园地为研究对象,将生态位适宜度模型引入到适宜性评价研究中,构建了5个因素12个因子的指标体系并提出了语言型、阈值型和空间型指标的量化方法,采用加权求和与限制因子模型对各评价单元柑橘的生态位适宜度值及限制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0.893,生境条件基本能满足柑橘的生长发育需求;园地适宜性评价结果以2级为主,所占面积达41.34%,1级地也达到21.58%;限制该地区园地生产潜力的生态因子...

The Niche-fitness theory is a further development of the classical niche theory and an extension of the related methods. The niche-fitness model developed on the basis of niche can reflect the fitness degree of crops to environmental conditions relatively well. It can also be utilized to analyze factors restricting the growth of crops. However,there is little work on suitability evaluation especially multi-suitability evalua- tion on tillage by applying the niche-fitness theory. Under the guidance of the theory of sustainable devel- opment for Chinese agriculture, this paper aimed to use niche...