廊坊市土地利用类型及植被覆盖度的时空动态变化研究

Study on the Spatial and Temporal Dynamics of Land Use Types and Vegetation Cover in Langfang City

廊坊市的土地利用变化对当地土地资源优化布局和生态环境保护具有明显作用。通过对廊坊市2000年、2005年、2010年、2015年及2020年5期土地利用数据进行分析,得到廊坊市土地利用变化相关数据和当地的植被覆盖指数,并利用该数据对研究区土地利用的合理性进行评价。结果表明:该研究区土地利用类型的数量和结构都在不断地变化和演变。2000—2020年综合土地利用动态度为0.42%,各土地类型之间也存在着不同程度的转化。土地利用类型间的多维向转化是引起土地利用时空分布变化的直接表现形式。2000—2020年廊坊市植被覆盖度变化也呈现出了下降趋势。

The land use changes in Langfang City have obvious effects on the optimal layout of local land resources and ecological environmental protection.In this paper,we analyzed the land use data of Langfang City in five periods of 2000,2005,2010,2015 and 2020 to obtain the data related to land use change and local vegetation cover index in Langfang City,and used the data to evaluate the rationality of land use in the study area.The results show that the number and structure of land use types in the study area are constantly changing and evolving.The integrated land use dynamic attitude from 2000 to 2020 is 0.42%,and there are different degrees of transformation among land types.The multi-dimensional transformation among land use types is a direct manifestation of the change in spatial and temporal distribution of land use.2000-2020 vegetation cover change in Langfang also showed a decreasing trend.