Dynamic Changes of Wetland Distribution and Landscape Pattern in Zoige Key Areas
The Zoige region has the largest alpine peat swamp in the world.Using the ArcGIS and FRAGSTATS software,this study extracted the distribution of wetlands and the landscape pattern based on the 30 m resolution globeland dataset of 2000,2010 and 2020.The results shows that the wetland in Zoige key areas is mainly concen-trated in Sichuan.The wetland area of the three periods in Sichuan province accounted for 84.97％,78.33％and 77.43％.The wetland area increased by 559.68km2 including 423.23km2 in Gansu province,showing a slow growth trend from 2000 to 2020.The growth area is mainly concentrated in the left side of the Yellow River in Maqu County and Manzetang area in Aba County.The change trend of land cover is mainly from grassland to wetland(water body),and the change area was 844.92km2.The degree of wetland landscape fragmentation decreased by 2.11 in 2000-2010 and 0.65 in 2010-2020,indicating a more stable wetland landscape pattern.
NETL
NSTL
万方数据
