摘要
以川西南亚热带阔叶混交林为对象,采用传统的罗盘仪对树体的相对空间位置进行定位,运用地统计学对林木20 a的断面积生长量进行分析,结果表明:林木的胸径(DBH)、断面积(BA)的空间自相关范围狭窄,林木断面积增长量的不同时段(1986—1991年,1986—1996年,1986—2001年,1986—2006年)在45°方向上空间变异较为明显。
One permanent plot with 100 m × 100 m was established to study the structure and function of mountain broad-leaved mixed forest ecosystem in southwestern Sichuan（ 102°50′E,30°02′ N）. The relative position of every tree was measured by compass. By analysis of geostatistics, diameter at breast height and basal area of forest stand showed spatial autocorrelations in strict ranges, further more, they represented spatial varieties only in orientations of 45 degree; basal area increment（BAI） of each tree species showed spatial varieties only in orie.ntations of 45 degree during 1986--1991, 1986--1996,1986--2001,1986--2006. Researches on spatial heterogeneities of tree BAI could put afford meaningful references for studying ecological structures and functions of subtropical Mountain broad-leaved mixed forest.
出处
《林业科学研究》
CSCD
北大核心
2008年第6期751-756,共6页
Forest Research
基金
国家自然科学基金(No.30471378)
国家"十五"攻关课题(2004BA606A-6)
四川省教育厅应用基础项目(2005A011)
关键词
空间异质性
断面积生长增量
山地阔叶混交林
spatial heterogeneities
basal area increment（BAI）
mountain broad-leaved mixed forest
