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基于1987、1995、2003年长白山露水河林业局森林资源二类调查资料,利用ArcGIS和FRAGSTATS等软件,在景观水平和斑块水平上分析了1987—2003年该区景观格局变化及其与森林经营机制之间的关系.结果表明:研究期间,研究区森林景观破碎化程度加剧、景观异质性程度加大;1987—2003年,研究区斑块数增加979块,最大斑块面积比例逐渐下降,由1987年的28.7%降至2003年的12.7%;由于经营方式的转变,该区景观基质由1987年的阔叶混交林转变为1995年后的混合景观基质;景观破碎化程度在1995—2003年的变化趋势较1987—1995年有所减缓;期间,该区阔叶混交林的平均斑块面积下降最多、边界分割程度最高,表明天然次生林受人类干扰最大.
Based on the survey data of forest resources of Changshu Mountain Lushuihe Forestry Bureau in 1987, 1995 and 2003, using the software of ArcGIS and FRAGSTATS, the change of landscape pattern and its relationship with forest management from 1987 to 2003 were analyzed on landscape level and plaque level. The results show that during the study period, the fragmentation degree of forest landscape increased and the degree of landscape heterogeneity increased. From 1987 to 2003, the number of patches in the study area increased by 979 and the area proportion of the largest patches gradually decreased From 28.7% in 1987 to 12.7% in 2003. Due to the change of management mode, the landscape matrix in this area changed from the broad-leaved mixed forest in 1987 to the mixed landscape substrate after 1995. The degree of landscape fragmentation in 1995- The trend of change in 2003 slowed down from 1987 to 1995. During this period, the average patch area of the broad-leaved mixed forest in this area decreased the most and the boundary was the highest, indicating that the natural secondary forest was the most disturbed by humans.