Spatial pattern of forest cover changes in the northeast China since 1980s

Ying Li; Zhiqiang Gao; Yuping Jing; Shuwen Zhang

doi:10.1117/12.614287

12 September 2005 Spatial pattern of forest cover changes in the northeast China since 1980s

Ying Li, Zhiqiang Gao, Yuping Jing, Shuwen Zhang

Proceedings Volume 5884, Remote Sensing and Modeling of Ecosystems for Sustainability II; 588416 (2005) https://doi.org/10.1117/12.614287
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

Forest is the main body of the land ecosystem. As key part of boreal forest in Eurasia, forest in the northeast China plays an important role in maintaining global carbon cycle and regional ecology security. The northeast China is the highest forest coverage ratio area in China, the forest coverage ratio in total area doesn't change much since reform and opening of China, but the spatial distribution of forest cover changes is in regional difference explicitly. Base on land use data of three period (1986a, 1996a, 2000a) remote sensing image, the research applying statistical analysis models and spatial analysis models, analyzed the forest cover change types, landscape characteristics and spatial distribution pattern from the middle of 1980s to 2000. The research result show that: (1) From 1980s, the main forest cover changes in northeast China was in interchange of forestland and cropland, and interchange of forestland and grassland. Among them, the forested land change plays mainly part, and deforest area is bigger than reforest one. (2) From 1980s, despite the forestland area decreases every year in northeast China, landscape pattern didn't change much, forestland is the main part of landscape, the degree of forest landscape fragmentation dropped every year. It shows that forest cover changes frequently take place at the edge of forest, which indicates that a neighborhood relation plays an important role in the forestland changes. (3) From 1980s, forest cover changes in northeast China most happened in hilly land at about 400m height, and took on obvious zonality in horizontal distribution: degree of forest cover change dropped off from south and north to middle, the degree of reforest dropped off from south to north, and the degree of deforest dropped off from north to south.

Citation Download Citation

Ying Li, Zhiqiang Gao, Yuping Jing, and Shuwen Zhang "Spatial pattern of forest cover changes in the northeast China since 1980s", Proc. SPIE 5884, Remote Sensing and Modeling of Ecosystems for Sustainability II, 588416 (12 September 2005); https://doi.org/10.1117/12.614287

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KEYWORDS

Ecosystems

Remote sensing

Carbon

Data modeling

Geographic information systems

Agriculture

Statistical analysis

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