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The study on distance-dependent models of individual tree in Pinus massoniana plantation

HUANG Jia rong, 2 WAN Zhao ming (1 Department of Forestry, Agricultural College, Guizhou University, Guiyang 550025, China;2.Forestry Bureau, Sanhui County,Sanhui 556500, China)  
On the basis of 23 fixed sample plot materials in Pinus massoniana plantation, Hegyi's simple competition index was used as competition target, the number of competitor was determined according to age class and density class and the models were established with method of regression analysis. The analysis of precision made clear that the rate fitting precision is 80%~96% and the state forecast average precision is over 97% for individual tree. The forecast precisions of stand basal area is over 95%.It made known that the models have higher forecast precision and better use results. This paper suggests to study and use extensively.
【Fund】: 贵州省基金!课题《马尾松人工林生长经营模型》的研究内容之一 (黔基合计字 (1993 ) 3 0 3 6号 )
【CateGory Index】: S791.248.05
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