%0 Journal Article
%T Landscape change and its spatial driving force of farmlands in Wenchuan County of Minjiang River upper reach<br>岷江上游汶川县耕地景观变化及空间驱动力
%A LIU Miao
%A HU Yuan-man
%A CHANG Yu
%A BU Ren-cang
%A ZHANG Wei
%A <br>刘淼
%A 胡远满
%A 常禹
%A 布仁仓
%A 张薇
%J 应用生态学报
%D 2007
%I 
%X Based on remote sensing images and geographic information system, and by using landscape metrics and Kappa coefficient, this paper studied the farmland landscape change in Wenchuan County of Minjiang River upper reach. A logistic regression model was used to analyze the driving forces of this change, with elevation, gradient, aspect, and the distances to road, river and settlement as the affecting factors. The results showed that from 1974 to 2000, the farmland area in Wenchuan County kept increasing, with the greatest increment in 1974-1986. In 1986-2000, farmland area had no evident increase, but converted with other landscape types frequently and had an evident spatial position change, especially in the period from 1994 to 2000. Such a farmland change was mainly driven by policy, and the spatial driving forces differed in different periods.
%K landscape metrics
%K Kappa coefficient
%K Logistic regression
%K Wenchuan County<br>景观指数
%K Kappa指数系列
%K Logistic回归
%K 汶川县
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=F65EB6DFB5839CEA&yid=A732AF04DDA03BB3&vid=13553B2D12F347E8&iid=38B194292C032A66&sid=1FA4E9C3E6E88FC8&eid=F6467E7C54ED952D&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=0&reference_num=23