乌溪江源头水源涵养林空间结构二元分布特征

Binary Distribution Spatial Structure Parameters of Water Conservation Forest in the Headstream Area of Wuxijiang River

于2020年利用空间结构参数中的混交度、角尺度、大小比数两两联合形成的二元分布,对乌溪江源头水源涵养林空间结构进行研究分析。结果表明:整体林分混交度较高,林分中处于极强度混交的林木个体数量最多,林分中林木的大小比数分布较均匀;林分中有一半以上的林木个体属于随机分布,少量林木为很均匀分布和团状分布;杉木(Cunninghamia lanceolata)作为主要优势树种之一,种群个体多处在高度混交状态。研究结果可为乌溪江流域水源涵养林林分空间结构和功能研究提供参考。

With the the headstream area of Wuxijiang River in Longquan County as the research object,the binary distribution of spatial structure parameters as the mingling(M),uniform angle index(W)and neighborhood comparison(U)of water conservation forest was analyzed in 2020.The results showed that:the mingling degree of stand was higher,mosttrees were in the state of high mixed degree,the frequency of different dominance degree were basically equal.A half of trees in the stand were randomly distributed,only few trees were regularly distributed or close to aggregated distribution.As the dominant populations,most individuals of the Cunninghamia lanceolata was in the state of high mixed degree.The results provide reference and guidance for optimization and decision making of stand structure in water conservation forest in the headstream area of Wuxijiang River.