期刊论文

Study on Landscape Pattern of Cultivated Land Based on Relief Amplitude——Taking Liling City as an Exanple

中文

国土与自然资源研究

1003-7853

2018

3

33-38

10.3969/j.issn.1003-7853.2018.03.012

(湘财建指[2014]405号):湖南省国土资源厅科研项目

本校为第一机构

研究选取醴陵市为研究区,利用Arc GIS10.2生成六个地形起伏度等级的耕地分布图,使用Fragstats4.2计算九个景观格局指数,从景观斑块特征指数和景观异质性指数两类指数分析耕地的景观格局特征。结果表明：在地形起伏度在≤0.35范围内,耕地景观格局破碎程度最大;地形起伏度0.35-0.4、0.4-0.45范围内,可适当增加人类活动,进行土壤改良,提高耕地的质量;耕地在地形起伏度0.45-0.5、0.5-0.55范围内分布最多,应对此范围内的耕地进行重点保护;在地形起伏度≥0.55范围内,耕地面积少,土地利用类型多为林地,农业基础设施不完善,管理难度大。

The study selected Liling City as the research area.The study generated six arable land distribution maps by using Arc GIS10.2, and calculated nine landscape pattern indexes by using Fragstas 4.2. According to the landscape patch feature index and landscape heterogeneity index, the thesis analyzed the Landscape Pattern Features of Cultivated Land Using Indexes.The results showed that the landscape pattern of cultivated land had the largest degree of fragmentation within the range of≤0.35; in the range of 0.35-0.4, 0.4-0.45, human activities co...