文档详情

若尔盖高寒沼泽植被生物量遥感估算研究.pdf

发布:2018-03-20约2.91万字共8页下载文档
文本预览下载声明
2015 年8月 林业资源管理 August2015 第4期 FOREST RESOURCES MANAGEMENT No4 若尔盖高寒沼泽植被生物量遥感估算研究 1,2 1 3 1 1 1 马琼芳 ,崔丽娟 ,郝云庆 ,高常军 ,王义飞 ,李 伟 (1中国林业科学研究院湿地所,北京100091;2吉林省林业科学研究院,长春130033;3四川省林业科学研究院,成都610081) 摘要:采用若尔盖高寒沼泽2011—2012年TM5 遥感数据和同期野外调查获得的32 个样地湿地植被生物量数据, 分析了遥感影像光谱特征、纹理特征以及地形特征与实测样点地上、地下和总生物量的相关关系并建立多元逐 步回归模型,进而计算生物量,结果表明:草本沼泽植被生物量与地形因子和纹理特征的相关性不强,与遥感 影像及其植被指数等自变量有显著的相关关系。若尔盖高寒沼泽的植被地上、地下、总生物量分别为36705, 3 68036,4 04801g/m 。随着地表水分的减少,生物量呈现先增加后减少的趋势。2 关键词:遥感;生物量;若尔盖 中图分类号:S7185;Q948 文献标识码:A 文章编号:1002-6622(2015)04-0045 -07 DOI:10.13466/j.cnki.lyzygl.2015.04.009 Satellite Remote SensingEstimationofBiomass in Ruoergai Alpine Marshes 1,2 1 3 1 1 1 MA Qiongfang ,CUI Lijuan ,HAO Yunqing ,GAO Changjun ,WANGYifei ,LI Wei (1Institute ofWetlands,ChineseAcademyofForestry,Beijing 100091,China;2Academy ofForestry ofJilin Province,Changchun 130033, China;3AcademyofForestryofSichuan Province,Chengdu610081,China) Abstract:In this paper,the TM5 image ofJuly and August2011—2012 and32 sitesofaboveground bio mass(AGB)and underground biomass(BGB)data ofthe Rouergai marshes in the same period were used asthe data source to establish the estimation modelsWe examined the relationship between AGB,BGB, total biomass(TB)and spectral information from remote sensing images,topographic factors and texture featuresThe best estimation models were establishedThe main results are as follows:Both topographic factors and texture features has no correlation to the herbaceous biomassThere were allometric relation ship(p<005)betweenbi
显示全部
相似文档