摘要
土地利用/覆被变化(LUCC)一直是国内外研究的热点,而对其重要组成部分的农用地进行研究具有更重要的现实意义。本文运用变化度、动态变化指数等方法对黄土丘陵区县南沟流域2009~2015a的人口、土地面积、产业状况等调查数据进行分析,研究其变化过程及产生原因。结果表明:7a来林地和果园分别增加488hm^2和23.34hm^2、耕地和牧草地面积分别减少87hm^2和25.7hm^2。引起这种变化的原因是:退耕还林相关政策的实施,大面积坡耕地和不适宜的荒草地转为林地;为适应市场经济发展的需要,部分耕地向园地过渡;同时科学技术与其他相关政策对其也有一定的促进、引导或制约作用。
Land use-land cover(LUCC)is a hot spot all over the world and studying of agricultural land has important practical significance.The article study the population,land areas and industrial development of 2009-2015 aby method of change rate and dynamic change index at Xiannangou Valley.The result shows that forest land increased 488hm^2,garden land increased23.34hm^2,cultivated land decreased 87hm^2,grassland decreased 25.7hm^2 during 7years.The reasons are:the policy of returning farmland to forest make forest land instead of lope farmland and grassland,apart of cultivated land transited to garden land in order to adapt market economy,while the science technology also offers advance,guide and condition.
关键词
县南沟流域
LUCC
农用地变化
经济利益
xiannangou valley
LUCC
agricultural land change
economic benefit
