海拔对云南松天然林林下更新的影响研究  

Effect of Altitude on Understory Regeneration of Natural Pinus yunnanensis Forest

作　　者：郭云伟 卢仁军 朱培英 Guo Yunwei;Lu Renjun;Zhu Peiying(Yunnan Forestry Survey and Planning Institute,Kunming,Yunnan 650051,China;Wenshan National Nature Reserve Management and Guide Branch,Wenshan,Yunnan 663099,China;Zhaotong Forestry and Grassland Bureau,Shaotong,Yunnan 657099,China)

机构地区：[1]云南省林业调查规划院,云南昆明650051 [2]文山市国家级自然保护区管护分局,云南文山663099 [3]昭通市林业和草原局,云南昭通657099

出　　处：《绿色科技》2023年第1期156-162,共7页Journal of Green Science and Technology

摘　　要：云南松作为西南地区的乡土树种,在西南地区分布范围广泛,为云南省的经济发展和生态效益提供了十分重要的作用。根据不同海拔,在云南松天然林地设置样地和样方,测量了灌木样方中林下灌木、草本的指标和云南松幼苗和幼树的高度和密度,对收集的数据进行了统计分析,结果表明:灌木层主要以蔷薇科和壳斗科植物为优势种,草本层主要以禾本科、蔷薇科和菊科植物为优势种。不同海拔植物物种多样性高低表现为1500 m>1800 m>2100 m;不同海拔草本层植物数量大小表现为1500 m<1800 m<2100 m;幼苗、幼树更新密度和平均苗高在海拔间具有显著或极显著的差异(P<0.05或P<0.01),海拔1500 m的幼苗、幼树更新最佳。Pinus yunnanensis is an important native tree species widely distributed in southwest China and plays an important role in the economic and environmental sustainability of Yunnan forestry. According to different altitude, a sample plot and a sample square were set up in a natural forest of Pinus yunnanensis. The indexes of understory shrubs and herbs in shrub quadrats and the height and density of Pinus yunnanensis seedlings and saplings were measured. Statistical analysis of the collected data showed that Rosaceae and Fagaceae were the dominant species in the shrub layer, while grasses, Rosaceae and Compositae were the dominant species in the herb layer. The diversity of plant species at different altitudes was 1500 m>1800 m>2100 m. The number of herbaceous plants at different altitudes was 1500 m<1800 m<2100 m. The regeneration density and average seedling height of seedlings and saplings had significant or extremely significant differences among elevations(P<0.05 or P<0.01), and seedlings and saplings at an altitude of 1500 m had the best regeneration.

关 键 词：云南松 海拔 天然林 植被多样性 更新 

分 类 号：S718.5[农业科学—林学]