文献类型：期刊文献

中文题名：小陇山锐齿栎天然林空间结构特征

英文题名：Spatial Structure Characteristic of Quercus aliena var. acuteserrata Natural Forest in Xiaolongshan

作者：赵中华[1] 惠刚盈[1] 袁士云[2] 刘文桢[2] 王润喜[2]

第一作者：赵中华

机构：[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]甘肃省小陇山林业实验局,天水741020

年份：2009

卷号：45

期号：3

起止页码：1-6

中文期刊名：林业科学

外文期刊名：Scientia Silvae Sinicae

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：“十一五”林业科技支撑课题2006BAD03A0803

语种：中文

中文关键词：锐齿栎;天然林;直径分布;角尺度;混交度;大小比数;小陇山

外文关键词：Quercus aliena var. acuteserrata ; natural forest; diameter distribution ; uniform angle index ; mingling; neighborhood comparison; Xiaolongshan

分类号：S750

摘要：研究小陇山3个类型锐齿栎天然林的直径分布和空间结构参数(混交度、角尺度和大小比数),分析其空间结构特征。结果表明:王安沟100多年未经人为干扰的锐齿栎天然林和响潭沟皆伐迹地上经近40年封山后自然恢复的次生林均表现为异龄林的直径分布特征,但从q值来看,王安沟锐齿栎天然林直径分布较响潭沟次生林更加合理,白营西沟择伐林的直径分布虽然表现为小径木占的比重比较大,但各径阶间的变幅平缓,有明显人为干扰的痕迹;王安沟锐齿栎天然林和白营西沟次生林林木个体分布角尺度均值分别为0.489和0.487,林分内林木整体分布格局属随机分布,响潭沟次生林林分角尺度均值为0.520,其林木水平分布格局表现出轻微的团状分布,群落还处于演替的早期阶段;3个林分中王安沟锐齿栎天然林的树种隔离程度最高,响潭沟次之,白营西沟最低,混交度分别为0.598,0.542和0.451;白桦、华山松在不同的林分中所处的地位不同,从王安沟锐齿栎天然林、响潭沟次生林到白营西沟择伐林表现出大小比数依次降低的趋势,而锐齿栎、漆树等树种则在3个林分中所处的地位一致;人为干扰对白营西沟次生林的结构特征有明显的影响。
This paper used diameter distribution and spatial parameters （uniform angle index, mingling and neighborhood comparison） to study the spatial structure characteristics of three stands of Quercus aliena var. acuteserrata natural forest in Xiaolongshan. The result showed that the structure of the three stands was obviously different： the diameter distribution in the natural forest in Wang＇ angou which absented disturbance for 100 years, and in the secondary forest originated from a clearcutting site in Xiangtangou in 1969 were of the typical uneven-aged forest, and their tree number proportion of small and middle diameter class were large in stands and the proportion was decreased with the diameter class increased. In comprison, the Wang＇ angou diameter distribution was more uniform than Xiangtangou. The small stem proportion was larger in Bayingxigou but it decreased more gently with the diameter increase, which suggested there was an obviously disturbance trace. The uniform angle index value of Wang＇ angou and Baiyingxigou was 0.489 and 0.487 respectively, and the pattern of horizontal distribution was random. The uniform angle index value of Xiangtangou was 0.520, and its distribution was of slight cluster, which exhitited the the community was still at early stage of succession. The tree species segregation of Wang＇ angou was maximum, followed by Xiangtangou and then Baiyingxigou. Their mean value of mingling was 0.598, 0.542 and 0.451 respectively. Neighborhood comparison showed that Betula platyphyUa and Pinus armandi were in different status in three different stands, and their status were decreased in order from Wang＇ angou, Xiangtangou to Baiyingxigou. However, Quercus aliena var. acuteserrata and Toxicodendron verniciflum had the same status in stands. Artificial disturbance had obviously effect on the forest structure in Baiyingxigou.