基于地形起伏度的耕地与聚落耦合关系演变研究——以都江堰市为例

发布时间：2019-07-04 13:59

【摘要】：基于DEM数据提取都江堰市地形起伏度,利用都江堰市2005年与2011年耕地、聚落数据,借助Arc GIS软件平台,定量分析了都江堰市耕地、聚落及耕地-聚落耦合类型的时空分布特征及其分异规律.结果表明:1)都江堰市的地形起伏度以平原为主、台地和丘陵次之,山地面积较小;2)耕地、聚落在平原地区分布面积最大,并且随地形起伏度的增加不断减少;3)耕地偏少型主要分布在城区及建制镇,耕地偏多型主要分布在台地地区,耕地—聚落均衡类型主要分布在都江堰市城区周边;4)在不同地形起伏度上,以小起伏山地为界,耕地—聚落不同耦合类型在平原、台地、丘陵地区变化较明显,耕地偏少型都处于增加趋势,而其它类型则都处于减少趋势,在小起伏山地至极大起伏山地地区,各类型的变化幅度小且变化的趋势比较复杂.
文内图片：

图片说明：都江堰市2005年和2011年不同地形起伏度下耕地分布
[Abstract]:Based on DEM data, the temporal and spatial distribution characteristics and differentiation laws of cultivated land, settlement and cultivated land-settlement coupling types in Dujiangyan City were quantitatively analyzed by using cultivated land and settlement data in Dujiangyan City in 2005 and 2011, and with the help of Arc GIS software platform. The results show that: 1) the topographic fluctuation degree of Dujiangyan City is mainly plain, followed by platform and hills, and the mountainous area is small. 2) the distribution area of cultivated land and settlement in plain area is the largest, and decreases with the increase of topographic fluctuation. 3) the less cultivated land type is mainly distributed in urban area and construction town, the more cultivated land type is mainly distributed in platform area, and the equilibrium type of cultivated land and settlement is mainly distributed around Dujiangyan city. 4) in different topographic ups and downs, taking the small undulating mountain as the boundary, the different coupling types of cultivated land and settlement change obviously in plain, platform and hilly area, the less cultivated land is in the increasing trend, while the other types are in the decreasing trend. In the small undulating mountain area to the great undulating mountain area, the variation range of each type is small and the change trend is more complex.
【作者单位】：四川师范大学西南土地资源评价与监测教育部重点实验室;四川师范大学地理与资源科学学院;
【基金】：国家自然科学基金(40301196)
【分类号】：C912.8

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