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FOREST RESOURCES WANAGEMENT ›› 2022›› Issue (3): 73-80.doi: 10.13466/j.cnki.lyzygl.2022.03.012

• Scientific Research • Previous Articles     Next Articles

Temporal and Spatial Changes of Natural Forest Loss in Xishuangbanna and its Landscape Ecological Response Based on Landsat Data

PENG Yan(), SHI Zhengtao(), HE Li, SHEN Run, XU Rui, CHEN Yuehao   

  1. Faculty of Geography,Yunnan Normal University,Kunming 650500,China
  • Received:2022-03-28 Revised:2022-04-21 Online:2022-06-28 Published:2022-08-04
  • Contact: SHI Zhengtao E-mail:1444826975@qq.com;shizhengtao@163.com

Abstract:

This paper extracted natural forest in Xishuangbanna in 1990 and 2019 using random forest method based on Landsat images.Meanwhile,the spatial-temporal variation characteristics and the impact on landscape ecology of natural forest losses in Xishuangbanna were analysed.The results showed that: 1) The area of natural forest in Xishuangbanna showed a variation tendency of continuous decrease from 1990 to 2019,with a decrease area of 369,601hm2,which was mainly converted into economic forest and cultivated land.2)Human activities were the main driving forces of natural forests losses in Xishuangbanna.The rapid population growth and the development of the social economy have increased the demand for agricultural land,thus exacerbating the loss of natural forests,and the loss of natural forests in Mengla County was the most serious.3)The loss of natural forest in Xishuangbanna resulted in severe forest landscape fragmentation,as well as the deterioration of habitat quality and significant edge effect.From 1990 to 2019,the number of natural forest patches increased by 1 950,and the average patch area decreased by 1 996.55 hm2.The landscape shape index increased from 48.06 in 1990 to 82.79 in 2019.

Key words: natural forest loss, landsat data, transfer matrix, landscape ecological response, Xishuangbanna

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