四川林业科技2025，Vol.46Issue(3)：80-87,8.DOI:10.12172/202501220001
华山松人工林林下植物多样性和土壤养分对间伐的短期响应
Short-term response of understory plant diversity and soil nutrients to thinning in Pinus armandi plantation
摘要
Abstract
In order to provide a theoretical basis for precision improvement of artificial forest quality,a 10-year-old Pinus armandii plantation in western Sichuan was chosen as the research object,the effects of different thinning intensities(thinning retention of 1 800,1350,and 900 trees per hectare)on the species composition,biodiversity and vegetation structure of understory plants,and soil nutrients was explored ater three years of thinning.The results showed that:(1)The greater the thinning intensity,the more species and quantity of undergrowth plants,and photophilic plants are the pioneer plants that enter the sample plot after thinning;(2)The diversity index of understory plants increased with the increase of thinning intensity,and the Pielou index,Margalef index,Shannon-Wiener index,and Simpson index of all thinning intensities were significantly different from those of the CK(P＜0.05).The Margalef index and Shannon Wiener index of thinning intensities M1,M3 were significantly different among different treatments(P＜0.05);(3)The coverage of understory plants in all thinning treatments was significantly different from that of the CK(P＜0.05),and there was also significant difference between M1 and M3.(4)There was significant difference in soil organic matter content between all thinning treatments and the control(P＜0.05),and showing a significant difference between M3 and M1& M2(P＜0.05).Soil organic matter content was also significantly positively correlated with plant diversity index(P＜0.05).The research indicates that from the short-term effect,the thinning intensity of 900-1350 trees per hectare is in favor of enhancing the understory plants diversity and soil nutrient of P.armandii plantation.关键词
间伐/华山松人工林/林下植物多样性/土壤养分Key words
thinning/Pinus armandi plantation/understory plant diversity/soil nutrient引用本文复制引用
潘红丽,黄胜佳,张帆,谢志文,李慧超..华山松人工林林下植物多样性和土壤养分对间伐的短期响应[J].四川林业科技,2025,46(3):80-87,8.基金项目
会东县华山松森林质量提升科研示范项目(2021-2025) （2021-2025）
天府森林粮库(木本粮食)建设-间伐对凉山彝区华山松结实能力的影响研究(2023YJJ01) （木本粮食）
