基于竞争势的林分生长量分配模型研究  

Study on Stand Growth Distribution Model

作　　者：蒋娴[1] 张怀清[1] 鞠洪波[1] 覃阳平[1] 张宁[1] 李永亮[1] 

机构地区：[1]中国林业科学研究院资源信息研究所,北京100091

出　　处：《林业科学研究》2013年第5期571-577,共7页Forest Research

基　　金：中央级公益性科研院所项目(IFRIT201103);国家自然科学基金(31170590);国家高技术研究发展计划(863计划)(2012AA102002)

摘　　要：以湖南省攸县黄丰桥林场杉木林分2008年至2011年每木检尺调查结果为数据源,开展对开阔比数模型fO,简单竞争因子模型f H和竞争压力指数模型f CSI的研究,提出一个新的林木综合竞争因子即竞争势模型fC=1/(fO+fH+fCSI),计算结果经过残差分析方法剔除异常,以竞争势为依据将林分总体生长量分配到林木个体,构建林分生长量分配模型。为了验证模型的准确性,对比分别以fC、fH、fCSI三个模型为依据的林分生长量分配结果,计算通过模型分配到个体的生长量与个体实际生长量之间的相关指数分别为0.6,0.44,0.29。分析结果表明竞争势模型可以作为林分生长可视化模拟中林分生长量向个体分配的一个依据,为林分生长可视化模拟提供有效支持。The mechanism restriction and the interactive impact of the competition play important roles in stand growth. To realize the simulation of stand growth, the competition models to distributing the overall growth increment of stand to each individual tree in the stand were studied. With Chinese fir （ Cunninghamia lanceolata） artificial stand in Huangfengqiao Forest Farm, Hu＇ nan Province, as the researehing subjeet, the Open Comparison model fo, Simple Competition Index model fH, and Competition Pressure Index model fcsl were developed. From the three models, a new model Competition Index Model fc = 1/（fo ＋fu ＋fcst） was propounded. After eliminating the outli- covariance was used to test the differences in correlation coefficient. It was concluded that the fc could be an effi- ciency function to use on the growth stand visualization.

关 键 词：开阔比数 简单竞争因子 竞争压力指数 竞争势模型 林分生长量分配模型 

分 类 号：S711[农业科学—林学]