ECOSYSTEM FUNCTION ESTIMATION FOR LARGE AREA BASED ON CANOPY DYNAMICS

1)将该方法应用于不同的森林类型，发现该方法同样适用于常绿林和防护林经营林。2)针对一个树种，建立了树体动态和树冠动态相结合的技术，并验证了其在树木种群分析中的有效性。3)一些生态系统参数，如生物量、其生产量、树木的补给量和死亡率与冠层动态特征有关。冠层高度可以作为更大尺度上估算这些生态系统参数的有效参数。4)应用GIG系统结合地面水槽进行评估，并对航片结果和卫星数据进行了分析，验证了其有效性。在此基础上，应用新型激光剖面仪进行了三维冠层结构探测试验，取得了较好的效果。

1) The method to detect canopy dynamics by using aerial photograph was applied in various forest types, and found that it is applicable also for devergreen forests and operated forest by shelterwood system.2) The technique to combine tree dynamics and canopy dynamics has been developed for a tree species, and its effectiveness in analyzing the tree demography has been validated.3) Some ecosystem parameters, such as biomass, its production, tree recruitment and mortality were related to canopy dynamic features. The canopy height could be used as the effective parameters to estimate these ecosystem parameters in larger scale. Also, the canopy height distribution could be applied to estimate the food biomass of some herbivours in landscape leverl.4) GIG system was applied to assess combine the ground trouth, analyzed results of aerial photographs and satellite data, and its effectiveness was validated. Also, a new trial usig a laser profiler to detect 3-dimentional canopy structure was applied, and got the highly expecting results.