ECOSYSTEM FUNCTION ESTIMATION FOR LARGE AREA BASED ON CANOPY DYNAMICS

(1)利用航拍技术检测林冠动态的方法应用于不同类型的森林，发现该方法同样适用于常绿林和防护林系统经营的森林。2)建立了林木动态与冠层动态相结合的方法，验证了该方法在树木种群统计分析中的有效性。3)生物量、产量、乔木补充和死亡等生态系统参数与林冠动态特征有关。在更大尺度上，冠层高度可以作为估算这些生态系统参数的有效参数。此外，林冠高度分布也可用于在景观水平上估算某些食草动物的食物生物量。4)应用GIG系统对地面测深进行综合评估，对航拍数据和卫星数据进行分析，验证了GIG系统的有效性。此外，本文还进行了利用激光剖面仪检测树冠三维结构的试验，取得了良好的效果。

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.