基于GIS的白河林业局景观格局演变研究

Research on Landscape Pattern Evolution of Baihe Forestry Bureau Based on GIS

在CIS的支持下，应用景观生态学的理论和方法，采用景观格局指标定量分析，研究1987．2000年长白山地区白河林业局景观格局的动态演变，探讨区域景观生态过程和森林景观格局演变之间的关系。结果表明：1987～2000年间，经营总面积减少1663．87hm^2，斑块数目增加4240个；受区域自然地理要素的影响和社会经济因素的制约，形成以有林地景观为主导的疏林地、灌木林地、沼泽地、非林业用地等呈补丁状散布之中的区域景观格局；随着人类干扰强度的增加，景观多样性指数上升，斑块密度增加，破碎化程度进一步加强。

Based on GIS as well as the theory and method of landscape ecology, the dynamic evolution of landscape pattern of Baihe Forestry Bureau in Changbaishan mountain Region from 1987 to 2000 was analysed with quantitative indexes, and the relationship between regional landscape ecology process and forest landscape pattern evolution was discussed. The result showed that total operation area decreased by 1 663.87 hm^2 and patch numbers increased by 4 240 from 1987 to 2000. Due to the influence of physical geography elements and the restriction of socio-economic factors, the regional landscape pattern had formed that forest lands predominated whereas open forest lands, shrub lands, swamp lands and non-forest lands scattered like patches. With the increase of human disturbance intensity, the landscape diversity index, the patch density and the degree of fragmentation were increased respectively.