HUBEI AGRICULTURAL SCIENCES ›› 2023, Vol. 62 ›› Issue (5): 22-26.doi: 10.14088/j.cnki.issn0439-8114.2023.05.005

• Resource & Environment • Previous Articles     Next Articles

Uncertainty and characteristics analysis of forest dynamic changes in the upper reaches of the Yangtze River region based on multi-source land cover data products

ZHU Chao-fan1, ZHU Qiu-an1,2, WANG Le1, LIU Jia1, QU Li-sha1   

  1. 1. College of Hydrology and Water Resources, Hohai University, Nanjing 210000, China;
    2. National Earth System Science Data Center, Beijing 100101, China
  • Received:2022-08-31 Online:2023-05-25 Published:2023-06-12

Abstract: Based on the uncertainty of the forest distribution of multi-source land cover data products in the upper Yangtze River region, this paper evaluated the accuracy of multi-source land cover data products using the sixth national forest resource inventory data as a reference, and analyzed the dynamic changes of forests in the upper Yangtze River region. The results indicated that there was significant uncertainty in the distribution and changes of forests in the upper Yangtze River region in land cover data products; the CLUD-A data product had the highest accuracy; the trend analysis of forest change showed that the areas with a significant increase in forest area in the upper Yangtze River region were Chongqing City, Guizhou Province, Sichuan Province, and Yunnan Province; the forest area in the upper Yangtze River region showed an increasing trend from 1982 to 1990, a decreasing trend from 1991 to 2000, an overall increasing trend from 2001 to 2010, and a decreasing trend from 2011 to 2015, which was significantly related to the implementation of the natural conservation project.

Key words: land cover data products, accuracy evaluation, trends in forest resource changes, upper Yangtze River

CLC Number: