基于RS与GIS石河子垦区土地动态变化分析

【目的】研究石河子垦区近年来土地动态变化,为该地区生态环境保护提供依据。【方法】以土地资源调查数据为基础,利用遥感和地理信息系统相结合方法,采用各类指数模型方法,研究石河子垦区近5 a土地利用类型的数量变化、空间变化特征以及各地类的转移情况。【结果】石河子垦区近5 a来各类土地利用类型增减变化较大,耕地变化较快,园林地、建设用地、水域呈增长趋势,草地、未利用地面积减少。【结论】影响石河子垦区土地利用变化的主要驱动因素是近几年降水增多的自然因素和经济快速发展、政府决策等社会因素。

Dynamic Monitoring Analysis of Land Use in Shihezi Based on RS and GIS

【Objective】This study's purpose is to provide the basis for ecological and environmental protection in this area by investigating the land use change and developing trend of Shihezi.【Method】By applying image processing module and computerized interpretation module of Erdas,the program analyzed six land use types in Shihezi(grassland,farmland,forest,unused land,construction land and water) derived from the remote sensing images from 2002 to 2007.The data of processing function of Excel and statistic analysis module of ArcGIS were further used to study the land use change in that period.【Result】The results showed that a set of land use change diagrams and transfer matrix charts of land use were obtained,and the characteristics of dynamic change of land use in the past 5 years was summarized.Through statistical analysis,it is found that each kind of land change varied greatly.Farmland has been changing fast,and the increasing use of construction land,forest land,and water was shown,but unused land decreased.【Conclusion】 The main driving factors of land use change in Shihezi are the natural factors,for example,rainfall increase,and social ones,such as rapid economic development,government decision-making and some other undetected factors.