摘要
根据全国森林清样调查围场满族自治县的落叶松林样地数据,应用与之同期的ETM遥感影像,探讨基于ETM数据的落叶松林生物量的估算方法和模式 根据ETM各波段数据的特点,选用和开发18个变量,逐样点比较生物量与变量之间的关系,并对影响生物量的因子进行逐步回归分析,结果表明ETM3数据是落叶松林生物量的最好估计因子,生物量与ETM3数据有双曲函数关系,与1/ETM3呈极显著正相关,相关系数为0 878,在ETM3波段辐射亮度范围内生物量随ETM数据的增大而减小
By Weichang county Larix gmelinii stand samples data of the forest inventory data(FID) of China,we use the contemporaneous ETM imagine,study the ways and models of estimating Larix gmelinii forests biomass using ETM data. We choose and developed 18 varibles,compared the relation between sample stands data and ETM data one by one,and study the effective factors of biomass by the regression analyse method .The results show that ETM3 is the best factor to estimating Larix gmelinii biomass. There is a hyperbolic curves relationship between biomass and ETM3 DN,sampling biomass data has the best positive correlation to 1/ETM3 with a coefficient of 0.878. In the range of ETM3 DN value, the digital number is larger,biomass is lesser.The models about estimating Larix gmelinii biomass by ETM3 data were given.
出处
《福建林学院学报》
CSCD
北大核心
2004年第2期153-156,共4页
Journal of Fujian College of Forestry
基金
中国科学院知识创新科学基金资助项目(KZCX2 SW 317
KZCX2 313)
