森林景观恢复过程中景观要素斑块规模的动态分析

Studies on the dynamics of patch size and grain structure of landscape elements in the forest restoration process

以 1 959年以来的 4期航片为基础资料 ,通过对研究地区各类景观要素的斑块平均规模和粒级结构及其动态变化过程进行分析 ,揭示了研究地区森林景观恢复演替过程中景观要素斑块规模的动态特点 ,阐明了植被演替和干扰格局控制下森林景观要素斑块恢复演替的过程和规律。研究地区森林景观自 50年代以来在整体上始终属于细粒结构景观 ,但景观要素斑块规模和粒级结构发生了显著变化 ,在三个不同时期表现出不同的变化特点 ,而且不同景观要素的斑块规模和粒级结构变化过程也很不相同。

Supported by ARC/INFO,using four stages of Ariel image since 1959 as basic data source,this paper analyzed and revealed the dynamic rules of landscape elements in forest landscape restoration of Guandishan Mountains Forest District in the Central West of Shanxi,China Patch Mean Size and Grain Size Structure of landscape element were used as basic indices to reveal the dynamic characteristic features of forest patches in forest restoration in study area Some basic rules and process of patch restoration and succession were demonstracted in the complex landscape changes co controlled by vegetation succession and disturbance regime The forest landscape in the study area is still being of final grain landscape since 1959 But the mean sizes and grain structures of different landscape elements were changed obviously with different change patten in the three stages of forest restoration process These differences reflected the ecological dynamic features of these different types of forest patch in landscape scale succession process