珠海市森林绿地遥感动态监测与驱动力分析

Dynamic Monitoring of Frest and Greenbelt of Zhuhai City Based on Remote Sensing and Analysis on Drivingforce

随着城市的发展,城市森林绿地对于提高人类生活环境的品质,发挥着越来越重要的作用。以珠海市为研究区域,应用1995年Landsat5的TM数据2、002年Landsat7的ETM数据、2009年CBERS-02B的CCD与HR数据为主体信息源,通过植被覆盖度指数与三种不同信息提取手段相结合的方法,对珠海市森林绿地的动态变化进行了遥感监测,然后对其变化结果进行了驱动力分析。结果表明:珠海市从1995年到2002年森林面积呈减少趋势,2002年到2009年森林面积又呈增加趋势,从1995年到2009年森林面积总体呈微减趋势。最后将自然驱动力与人为驱动力进行对比分析,人为驱动力是珠海市森林绿地的变化的主导因素。

With the development of the city, forest and greenbelt play an increasingly important role in improving the environmental quality of human life. Taking Zhuhai as the study area, using I-andsat5 TM images of 1995, Landsat7 ETM images of 2002, CBERS - 02B CCD and HR images of 2009, the paper firstly makes a remote sensing dynamic monitoring to forest and greenbelt and then analyzes its driving forces by combining vegetation coverage with three differ- ent means of information extraction method. The research results shows： Zhuhai City forest area decreased from 1995 to 2002, forest area increased from 2002 to 2009. The greenbeltarea increases from 1995 to 2009. Compared the natural and man - made driving force, it is concluded that man - made driving force is the dominant factor in the change of the forest and greenbelt in Zhuhai City.