Analysis of Grassland Biomass and Coverage in Jiaozishan Nature Reserve Based on Remote Sensing Images
SHAO Dengcai
ZHAO Changyou
XU Zuping
WANG Xiangyun
PI Zhongxu
ZHANG Shangfei
WU Mingsheng
ZHAO Zhiqing
Abstract：The grassland in Yunnan Jiaozi Mountain National Nature Reserve belongs to the only sub alpine plant distribution area in the transition zone from the Qinghai Tibet Plateau to the southeast the Yunnan-Guizhou Plateau.Based on the Google Earth Engine(GEE)cloud platform,this paper obtained the image of Sentinel-2 Natural Reserve in 2020 online,combined with the digital elevation model,selected 83 classification features based on spectral features,vegetation index,texture features,and topographic factors,and used the random forest model to extract and analyze the remote sensing of six types of grassland in the Natural Reserve,and obtained that the area of each grassland type was 5805.2394 hm2,accounting for 35.28％of the total area of Jiaozi Mountain Nature Reserve;The total yield of 6 grassland types is 21519.3771 tons,and the average Aboveground Biomass(AGB)of each grassland type is 367.3392 g/m2;The total coverage of grass mostly exceeds 50％.Due to the diverse climate and environment,as well as the same season of water and heat,the plants in the protected area grow faster and the grass yield is higher,maintaining good spatial continuity in the grassland.
Keywords：rmote sensingpotected areasgssland resourcesbomasscverage
Publication Date：2024-12-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：7( 76-81,49 )