池泓,黄进良,邱娟,孙国清,付安民

• 1:中国科学院测量与地球物理研究所
• 2:马里兰大学帕克分校地理系
• 3:国家林业局调查规划设计院

摘要(Abstract)：

基于大脚印激光雷达数据和野外观测数据,该文提出一种获取脚印点内森林生物量的新思路,并结合陆地卫星数据应用于长白山地区森林地上生物量估算。首先,基于3种森林类型(针叶林、阔叶林和针阔混交林),采用多元逐步回归方法建立激光雷达波形指数与脚印点内实测平均树高的回归模型,估算全部脚印点内的平均树高;然后根据脚印点内样方的野外观测数据(平均树高和平均胸径)以及它们与样方生物量的拟合方程估算没有野外调查数据对应的脚印点的生物量;最后对3种森林类型的脚印点森林生物量在各森林覆盖度条件下进行分层分区统计得到生物量等级图。验证比较遥感估算的生物量与野外调查数据推算的生物量,总体误差在0~30(t·hm~(-2))之间,均方根误差为14.66(t·hm~(-2))。

关键词(KeyWords)： 森林地上生物量;大脚印激光雷达;多元逐步回归;森林覆盖度;陆地卫星

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41201371,41271125)

作者(Author): 池泓,黄进良,邱娟,孙国清,付安民

DOI: 10.16251/j.cnki.1009-2307.2018.04.002

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