天津市静海县土地利用动态变化研究

The Study on Dynamic Changes of Land Use Types in Jinghai CountyBased on MODIS Data

近年来,随着经济和社会的快速发展,人口膨胀速度加快。人们的土地利用活动越来越频繁,强度也越来越大,造成了许多环境和资源问题。研究土地利用/覆被变化成为全球环境变化研究的热点问题。对协调经济发展、资源环境保护、实现可持续发展具有重要意义。本文利用ENVI5.1和ArcGIS10.2对天津市静海县2000、2005、2010和2015年4期MODIS遥感影像为基础,分析了静海县这15年内的土地利用结构变化,研究结果表明,2000—2015年间,研究区的草地和建设用地增加比例分别为1.61%和74.62%,耕地、林地和水域减少比例分别为17.94%、18.42%和0.77%。

In recent years,with the rapid development of economy and society,the speed of population expansion has accelerated.People′s land use activities are becoming more and more frequent and intensive,resulting in many environmental and resource problems.With the deepening of research,the main reason for environmental change is that people's land use has changed.Therefore,the study of land use/cover change has become a hot spot in the study of global environmental change.It is of great significance for coordinating economic development,protecting resources and environment,and realizing sustainable development.Based on the four MODIS remote sensing images of Jinghai county in Tianjin in 2000,2005,2010,and 2015,ENVI 5.1 and ArcGIS 10.2 were used to analyze the changes of land use structure in Jinghai county in the past 15 years.The results show that the increase rates of grassland and construction land in the study area between 2000 and 2015 are 1.61%and 74.62%,respectively.Land,forest land,and water area decreased by 17.94%,18.42%,and 0.77%,respectively.