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Emergency estimation of carbon stock in forest using high-resolution space images data

利用高分辨率空间图像数据紧急估算森林碳储量

基本信息

批准号：
14360084
负责人：
ABE Nobuyuki
金额：
$ 6.72万
依托单位：
NIIGATA UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2003
项目状态：
已结题

项目摘要

The amount of carbon sink of Japanese cedar plantation was presumed using high resolution satellites IKONOS and QuikBird. The object area is Maki(near Mt.Kakuta) and Tsugawa town in Niigata Prefecture. In the whole area, 21 plots were set up around Maki town and 45 plots were set up around Tsugawa town and when correlation between volume of a plot and the digital number of the band 3 which corresponds at a plot position was investigated. Exponential regression equation was obtained between volume of plot and digital number.Then, using the Niigata Prefecture GIS, the Japanese cedar plantation was extracted and the satellite image and forest map were overlaid, Volume of subcompartment was presumed from above-mentioned exponential regression equation. The amount of carbon sink which a forest stores can be presumed by multiplying volume by capacity density and the rate of carbon. The capacity density of a Japanese cedar is 0.32 and the rate of carbon is 0.5. Generally, carbon is contained … More not only in a stem but in a branch, a leaf, and a root, Form stem, the expansion coefficient 1.7 is used for presuming the whole amount of carbon. However, since presumption of volume was taken into consideration to the subject this time, only the amount of carbon stored from volume was presumed.Consequently, the amount of carbon sink of the Japanese cedar plantation of Maki town is 39,988 ton and 180,101 ton in Tsugawa town. On the other hand, there is a forest register in our private forest in Japan. However, volume of this forest register is calculated by the growth formula in a computer. In order to calculate by formula, indication that the present volume condition is not suited.We compared volume of forest register and of high resolution satellites. RMSE(square average value) of Maki town by high resolution satellites is 134m3/ha and 162m3/ha from forest register. In case of Tsugawa town, RMSE of high resolution satellites is220m3/ha and 239m3/ha from forest register. It is better to estimate volume using high resolution satellites than forest register. Less

利用高分辨率卫星IKONOS和QuikBird估算了日本杉种植园的碳汇量。对象区域是新泻县的Maki（角田山附近）和津川町。在整个区域中，在真木町周围设置21个样地，在津川町周围设置45个样地，并调查样地体积与样地位置对应的带3的数字之间的相关性。利用新泻县地理信息系统，提取日本杉种植园，将卫星影像与森林图进行叠加，根据指数回归方程推算小班蓄积量。森林的碳汇量可以通过体积乘以容量密度和碳率来推测。日本雪松的容量密度为0.32，碳率为0.5。一般来说，含碳量 ...更多信息不仅在茎中，而且在分支、叶和根中。对于茎，膨胀系数1.7用于推定碳的总量。但是，由于本次课题考虑了体积的推定，因此仅推定了体积的碳蓄积量，因此，牧町的雪松种植园的碳汇量为39,988吨，津川町为180,101吨。另一方面，我们在日本的私人森林中有一个森林登记册。然而，该森林登记册的蓄积量是在计算机中通过生长公式计算的。为了用公式计算，说明目前的蓄积量条件不适合，我们对森林登记和高分辨率卫星的蓄积量进行了比较。高分辨率卫星对真木镇的RMSE（平方平均值）为134 m3/ha，森林登记为162 m3/ha。就津川町而言，森林登记册中高分辨率卫星的RMSE为220 m3/ha和239 m3/ha。用高分辨率卫星估测蓄积量比用森林登记册估测蓄积量好。少