摘要
以生态位理论为基础，提出了耕地生态元和耕地生态位的概念。在此基础上，构建了用以量度耕地数量空间格局变化规律的耕地数量生态位重心模型，并运用该模型对焦作市1998-2004年期间耕地数量变化规律进行了分析。分析结果表明，该模型可以有效测度区域耕地数量整体变化特征及其年际变化程度大小，并可依据其变化规律探求区域耕地数量变化的驱动因素和驱动力。
The concepts of cultivated land ecounit and cultivated land niche are proposed based on niche theory. The mathematical model of cultivated land quantity niche barycenter is constructed, which can measure the spacial change law in the quantity of cultivated land. Then the change features in the quantity of cultivated land in Jiaozuo City during 1998-2004 are analyzed by the mathematical model of cultivated land quantity niche barycenter. The results are as follows. The model of cultivated land quantity niche barycenter may better measure the whole special change features and yearly change degree, by which the driving factors and driving forces can be probed after.
出处
《水土保持研究》
CSCD
北大核心
2007年第1期21-23,共3页
Research of Soil and Water Conservation
基金
河南省科技攻关项目(0624220091)
河南理工大学自然科学(青年)基金重点资助项目(Z050501)
关键词
生态位
耕地生态元
耕地数量生态位重心
焦作市
niche theory, cultivated land ecounit
cultivated land quantity niche barycenter
Jiaozuo City
