Analysis of Landscape Pattern Changes and Driving Forces in Nanling National Nature Reserve

南岭自然保护区景观格局变化及其驱动力（英文）

The spatial and temporal changes of landscape pattern and their driving forces in each functional zone of Nanling National Nature Reserve were analyzed based on the GIS and RS platform. The results showed that from 1988 to 2009, in respect of changes of Jandscape area, the main forest landscape accounted about 95% of the total area, of which evergreen broad-leaved forest had the largest area, accounting for more than 50% of the total area. The dominant landscape was coniferous forest. In respect of landscape fragmentation, the density index of land- scape in the whole area increased, and the degree of landscape fragmentation also increased. In the core area, the patch density decreased slightly, and the average patch area of each type of landscape increased; the degree of landscape fragmen- tation increased slightly. In the buffer area and the experimental area, the degree of landscape fragmentation increased. In terms of landscape diversity, the landscape pattern in the whole area became complex, and the diversity index of landscape in- creased and the degree of heterogeneity increased. In the core area, the diversity index of landscape increased slightly. In the buffer area, it increased significantly. In the experiment area, the diversity index reduced, and the degree of landscape het- erogeneity reduced. In the whole study area, the landscape tended to be diversified. The landscape pattern of the experimental area was consistent with that of the whole study area, and there was no obvious change in the buffer zone, while the landscape pattern in the core area developed towards the single direction.

利用RS、GIS技术,研究分析了南岭国家级自然保护区内景观格局的时空变化及其驱动力因子。结果表明,1988~2009年,在景观面积变化方面,区内景观主体森林景观占总面积的95%左右,其中常绿阔叶林面积最大,占总面积的50%以上,优势景观类型为针叶。在景观破碎度方面,全区内景观的密度指数增加,景观破碎化程度加剧;核心区内斑块密度指数略减,各景观类型的平均斑块面积增大,景观破碎化程度略增但不显著,缓冲区和实验区破碎化程度加剧;在景观多样性方面,全区内景观格局由简单变复杂,多样性指数增大,异质化程度增加;核心区内景观多样性呈现略增但不显著;缓冲区内景观多样性显著增加;实验区内多样性指数减小,景观异质化程度降低;整个研究区内的景观向多样化方向发展。实验区景观格局与全区一致,缓冲区变化不大,核心区景观格局朝单一化方向发展。