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  • 软件名称:洪河湿地植被地上生物量遥感反演研究
  • 软件大小: 0.00 B
  • 软件评级: ★★★
  • 开 发 商: 韩颖,裴亮,杜嘉
  • 软件来源: 《遥感技术与应用》
  • 解压密码:www.gissky.net

资源简介

摘要: 在对洪河湿地植被地上生物量实地采样调查的基础上,利用准同步的TM数据建立了洪河湿地地上生物量遥感反演模型。主要研究了洪河湿地植被地上生物量的空间分布情况,并结合研究区的DEM分析生物量空间分布特征和高程的相关关系。并分析了不同生物量范围内,生物量与高程之间相关性存在差异的原因。研究表明:多元回归模型与其他模型相比拟合精度最高,决定系数为0.813,是洪河湿地地上生物量估算的精度最优模型;经估算得到2007年洪河湿地地上生物量主要集中分布于600~1 200 g/m2之间,总生物量为2.4856×108g,平均生物量为934.7105 g/m2。通过生物量与DEM的相关分析得到,在生物量值为0~600 g/m2的低生物量分布区域,生物量与高程之间存在较好的相关性,相关系数为0.79839;在生物量为600~1 200 g/m2和1 200 g/m2以上范围内,生物量与高程值之间相关性较弱。 关键词: 地上生物量;  相关分析;  反演模型;  洪河湿地     Abstract: The remote sensing inversion models for the aboveground biomass of the Honghe Wetland were established by TM data and the field investigation of aboveground biomass around the Honghe Wetland. The spatial distribution of aboveground biomass of the Honghe Wetland and the relationship between the biomass and the DEM were analyzed.The reasons for within different biomasses,the correlation between biomass and elevation differences were analyzed too.The result showed:The multiple regressions had a higher fitting precision than other regressions,and R2 was 0.813;The total biomass of Honghe Wetland was 2.4856×108g and the average was 934.7105 g/m2 in 2007;The biomass mainly concentrated between 600 and 1 200 g/m2.The composite analysis of the biomass and DEM showed that the biomass was between 0 and 600 g/m2 which had a good correlation,the correlation coefficient was 0.79839.The biomass was between 600 and 1 200 g/m2 and above 1 200 g/m2 which showed a poor correlation.

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