中文摘要：

采用中山市五桂山地区1990、2000、2010年3个时相的LandsatTM／ETM＋遥感影像作为基本数据源，利用网格抽样方法，通过手持式GPS采集了保护区内120个抽样点的外业数据（蓄积量），借助ENVI遥感软件和SPSS统计工具，运用多元线形回归法，结合3S技术对中山市五桂山森林保护区的蓄积量进行时间序列的分析，构建了该研究区域的森林蓄积量遥感定量估测模型，并利用该模型提取研究区3个时相的森林蓄积量等级图，探讨其森林蓄积量的时间序列变化。该研究为实现流域森林生态系统的平衡，最大限度地发挥森林的生态、经济和社会效益提供科学依据。

英文摘要：

In this paper, three times Landsat data （1990, 2000 and 2010） were used as basic data in order to extract the information of forest volume in Zhongsan Wugui mountain. In the process of obtaining forest volume information, 120 sample data was collected using the hand-GPS according to the Grid sample method. On the other hand, under the supporting of ENVITM and SPSSTM software＇s, this paper built a quantitative forecast model of forest volume based on 9 indexes using the linear regression method. At the last, this paper discussed the time series change of the forest preserve volume in this area in past 20 years. According to the model, three times level maps of forest volume in 1990/2000/2010 were drafted and the spatial changes were discussed. This paper provided a case study and was meaningful for keeping the balance of the watershed forest ecosystem and was important in maximizing the ecological, economic and social benefits.