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利用1979年、1991年、1999年和2007年4期遥感影像,对广东省鼎湖山自然保护区各功能区内森林景观动态进行对比。结果表明:1)1979—2007年,森林景观优势增加,景观异质性和稳定性下降。2)针叶林、灌丛向常绿阔叶林和混交林转化,导致森林面积增加;针叶林向林间地等非林地类转出,表明针叶林受到较强干扰。3)各同功能区森林变化差异明显,表明缓冲区干扰最强,核心区最低,符合自然保护区功能区划分基本目的。4)保护区西部的森林景观年变化率较高,主要受植被自然演替的影响;东部森林变化率较高,表明缓冲区和过渡区所受到强烈人为干扰。
Based on the remote sensing images of 1979, 1991, 1999 and 2007, the forest landscape dynamics in various functional areas of Dinghushan Nature Reserve in Guangdong Province were compared. The results show that: 1) From 1979 to 2007, the advantages of forest landscape increased and the heterogeneity and stability of landscape decreased. 2) Coniferous forests and shrubs are transformed into evergreen broad-leaved forests and mixed forests, resulting in an increase in forest area; the coniferous forests are transferred to non-forest land such as forest land, indicating that the coniferous forest is strongly disturbed. 3) The differences in forest changes among different functional areas are significant, indicating that the buffer zone has the strongest interference and the lowest core area, which is in line with the basic purpose of dividing functional areas in nature reserves. 4) The annual change rate of forest landscape in the western part of the reserve is high, which is mainly affected by the natural succession of the vegetation. The forest change rate in the east is high, which indicates that the buffer zone and the transition zone are strongly interfered by people.