Study On The Forest Landscape Spatial Patterns Of The Northern Shangri-La

the forest landscape pattern is the key issues of the forest landscape ecology. Shangri-La is located in the upper reaches of the Yangtze River. It is one of the most important forest areas in Yunnan Province, and the forest is widely distributed and its area is large. It is great significance to know the changes of forest landscape pattern under the anthropogenic interference for the planning and management of forest landscape and the sustainable use of forest resources. Taking the Landsat-5 TM of 1989. Landsat-7 ETM+ of 1999 and Landsat-5 TM of 2009 as data source, forest has been classified in northern Shangri-La County, and the forest landscape pattern has bee analyzed systematically by using the feature index of Patch area, Patch Perimeter, Patch Number (NP), Patch Density (PD), Largest Patch Index (LPI), Landscape Shape Index (LSI), Perimeter-Area Fractal Dimension (PAFRAC), Area-weighted Mean Patch Shape Index (AWMSI), Shannon Diversity Index (SHDI), Shannon Evenness Index (SHEI), etc. It would provide a practical guide to the construction of tourist scenic spot and the landscape planning. The results show that: (1) the forest landscape in the study area dominated mainly the Cold-temperate Needle-leaf Forest and the Evergreen Broad-leaf Forest, They accounted for more than 50% in the entire landscape area. Followed by were the Warm-temperate Needle-leaf Forest and the Needle-leaf and Broad-leaf Mixed Forest. (2) From the point of view of the Patch Number (PN), Area and Perimeter Index, the Cold-temperate Needle-leaf Forest and the Evergreen Broad-leaf Forest of the landscape element in prominently. And they were in a relatively stable distribution. (3)From the point of view of the Patch Number and Patch Density, the Cold-temperate Needle-leaf Forest and the Evergreen Broad-leaf Forest were relatively large, indicating a higher degree of fragmentation. The degree of the fragmentation was increasing in the past twenty years. In addition, the shape of the landscape more was becoming complicated, and there was an increasing trend. (4) From the point of view of landscape fragmentation degree, the Perimeter - Area Fractal Dimension and the Area-weighted Mean Patch Shape Index of the warm-temperate needle-leaf forest and needle-leaf and broad-leaf mixed forest were close to 1, indicating the most severe degree of fragmentation, and human disturbance was great strong and them need to be further protected.