期刊论文

Dynamic changes and their relationship of spatial structure and soil's water conservation function in Cunninghamia lanceolata forest after stand improvement

中文

中南林业科技大学学报

1673-923X

2018

38

11

103-109

10.14067/j.cnki.1673-923x.2018.11.015

国家“十二五”科技支撑项目(2012BAD22B0505) 中南林业科技大学研究生科技创新基金项目(CX2017B52) 中南林业科技大学林学重点学科开放基金项目(2016ZD06)。

本校为第一机构

为了研究不同龄组杉木林空间结构与土壤水源涵养功能的关系,以湖南省福寿国有林场幼、中、近熟林3个龄组杉木林为研究对象,基于林分空间结构与土壤水源涵养功能动态变化分析,运用灰色关联分析挖掘影响水源涵养功能的主要空间结构因子。结果表明:经间伐补植后,2017年不同龄组杉木林的混交度和林层指数较2012年的显著提高,林木水平分布格局更趋向于均匀分布的随机分布,林分的透光条件变差,幼、中龄林的林木竞争降低,而近熟林的林木竞争加剧;幼、中、近熟林的土壤持水量分别增加了18.85%,36.94%,32.78%,土壤毛管孔隙度分别增加了0.59%,11.57%,8.58%,土壤容重分别减少了16.06%,18.71%,18.46%。幼、中...

In order to study the relationship between spatial structure and soil water conservation function of Cunninghamia lanceolata forest in different age groups, taking the young, middle-aged and near mature forest of Cunninghamia lanceolata in Fushou Forest Stateowned Farm of Hunan Province as object of study, based on the dynamic analysis of stand spatial structure and soil water conservation function, the main spatial structure factors influencing the water conservation function were excavated by using grey relational analysis. The results showed that after thinning and replanting, the mingling ...