基于遥感影像的轿子山保护区草地生物量及覆盖度分析  

Analysis of Grassland Biomass and Coverage in Jiaozishan Nature Reserve Based on Remote Sensing Images

作　　者：邵登才 赵昌佑 徐祖平 王祥云 皮忠旭 张尚飞 吴明升 赵志清 SHAO Dengcai;ZHAO Changyou;XU Zuping;WANG Xiangyun;PI Zhongxu;ZHANG Shangfei;WU Mingsheng;ZHAO Zhiqing(Jiaozishan National Nature Reserve Management Bureau,Luquan Yunnan 651515;Institute of Plateau Forestry,Chinese Academy of Forestry,Kunming Yunnan 650200;Forestry Station,Wumeng Township,Luquan County,Luquan Yunnan 651516)

机构地区：[1]云南轿子山国家级自然保护区管护局,云南禄劝651515 [2]中国林业科学院高原林业研究所,云南昆明650200 [3]云南省禄劝县乌蒙乡林业站,云南禄劝651516

出　　处：《山东林业科技》2024年第6期76-81,49,共7页Journal of Shandong Forestry Science and Technology

基　　金：云南牧草新品种选育研究及示范推广(202302AE090008);亚高山草地优势植物性状及其生产力形成机制(CAFYBB2022SY039)。

摘　　要：云南轿子山国家级保护区草地属于青藏高原向东南云贵高原过渡带上仅有的一个亚高山植物分布区域,本文基于谷歌地球引擎(Google Earth Engine,GEE)云平台,在线获取2020年Sentinel-2自然保护区影像,结合数字高程模型,选取基于光谱特征、植被指数、纹理特征、地形因子的分类特征共83个,利用随机森林模型,对自然保护区6类草地进行遥感提取分析,得出各草地类型面积共计5805.2394 hm^(2),占轿子山保护区总面积的35.28%;6种草地类型的产量共计21519.3771 t,各草地类型的地上生物量(Aboveground Biomass,AGB)平均为367.3392 g/m^(2);草地总覆盖度多数超过50%。由于保护区气候环境多样、水热同季等原因,植物生长较快,产草量较高,草地保持了良好的空间连续性。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 hm^(2),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/m^(2);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.

关 键 词：遥感 保护区 草地资源 生物量 盖度 

分 类 号：S812[农业科学—草业科学]