次生林内红松幼树的恢复及其状况的量化表达  

Recovery and its Quantitative Expression of the Planted Young trees of Pinus koraiensis under Natural Secondary Forest

作　　者：范少辉[1,2] 张群[1] 沈海龙[3] 

机构地区：[1]中国林业科学研究院林业研究所,国家林业局林木培育重点实验室,北京100091 [2]国际竹藤网络中心,哈尔滨150040 [3]东北林业大学森林资源与环境学院

出　　处：《林业科学》2005年第1期71-77,共7页Scientia Silvae Sinicae

基　　金：国家"十五"重点攻关项目"天然林保育技术研究与示范" (2 0 0 1BA5 10B0 8)。

摘　　要：对天然次生林下人工更新红松幼树的恢复过程进行研究。结果表明 ,在红松幼树生长的不同阶段进行适当的透光伐调整林分结构 ,有利于红松幼树的生长恢复。同时 ,研究中还利用大小比数 (U)、混交度 (M)和角尺度(W)等先进的林分空间结构参数 ,来分析不同经营阶段林下红松幼树的生长状况 ,以及红松周围相邻木的混交和分布状况 ,并将研究结果用数量化的形式表达出来。当红松幼树为优势木 ,周围相邻木为中度混交且呈随机分布时可表示为 :U =0或U =0 2 5 ,M =0 5 ,W =0 5。Recovery course of the planted young trees of Pinus koraiensis under the natural secondary forest were studied. The main reason for the feeble growth of the young Korean Pine was the environmental condition. At the young stage of Korean Pine, different environmental conditions were required. It has been found that release cutting could regulate the stand structure and ameliorate the environmental condition, so the growth of the young Korean Pine could be recovered. Besides, a series of stand structure parameters, such as neighborhood comparison (U), mingling (M) and neighborhood pattern (W), was induced to technical indexes. So the growth of the young Korean Pine, and the mixing as well as the distribution of its closest 4 neighboring trees can be expressed quantitatively. Results indicated that, when the young Korean Pine was to be dominant tree, neighborhood comparison (U) would be 0 or 0.25, the neighboring trees of it were medium mixture and randomly distributed, mingling (M) would be 0.5, and neighborhood pattern (W) would be 0.5.

关 键 词：红松 幼树生长 混交 天然次生林 人工更新 透光 林分 经营 状况 优势 

分 类 号：S791.247[农业科学—林木遗传育种] S718[农业科学—林学]