| 西双版纳地区橡胶林生物量的遥感估算 |
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| 引用本文： | 徐万荣,马友鑫,李红梅,刘文俊.西双版纳地区橡胶林生物量的遥感估算[J].云南大学学报(自然科学版),2011(Z1). |
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| 作者姓名： | 徐万荣 马友鑫 李红梅 刘文俊 |
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| 作者单位： | 中国科学院西双版纳热带植物园;中国科学院研究生院; |
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| 基金项目： | 中国科学院“创新2020”战略性先导科技专项(XDA05050200) |
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| 摘 要： | 以西双版纳地区橡胶林为对象,设置93个900 m2样地并测量每株胸径等数据,根据经验式计算样地生物量,并分析了生物量与样地调查时间接近的2010年Landsat TM影像的反射率和植被指数的相关性,建立生物量估算模型,计算了该地区橡胶林生物量.结果表明:①生物量与可见光波段(TM1,TM2,TM3)(P<0.01)和中红外波段(TM5,TM7)反射率呈显著负相关(P<0.05),与NDVI,RVI和GI植被指数则呈显著正相关(P<0.01);②GI植被指数是生物量的最佳估算因子;③橡胶林生物量变化在1～291 t.hm-2之间,平均值为(75.90±58.75)t.hm-2,总生物量为1.97×107 t;④生物量在景洪市和勐腊县南部地区较高,且随海拔升高呈现出先增加后减少趋势,最大值出现在600～700 m.
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| 关 键 词： | 橡胶林 生物量 遥感 反射率 植被指数 |
Estimating biomass for rubber plantations in Xishuangbanna using remote sensing data |
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| XU Wan-rong,MA You-xin,LI Hong-mei,LIU Wen-jun.Estimating biomass for rubber plantations in Xishuangbanna using remote sensing data[J].Journal of Yunnan University(Natural Sciences),2011(Z1). |
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| Authors: | XU Wan-rong MA You-xin LI Hong-mei LIU Wen-jun |
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| Institution: | XU Wan-rong1,2,MA You-xin1,LI Hong-mei1,LIU Wen-jun1(1.Key Laboratory of Tropical Forest Ecology,Xishuangbanna Tropical Botanical Garden,Chinese Academy of Sciences,Menglun 666303,China,2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | Biomass of 93 sample plots for rubber plantations in Xishuangbanna was calculated from field measurements of diameter at breast height(DBH) using an allometric equation.The biomass was correlated with reflectance and various vegetation indices derived from Landsat TM image with acquisition time close to the field campaign time using the Pearson correlation method.An estimation model for biomass was developed using stepwise linear regression analysis and a spatially explicit biomass map of rubber plantations... |
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| Keywords: | rubber plantations biomass remote sensing reflectance vegetation indices |
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