Spatial pattern of trees,basal stem increment and height were examined in a 5.0 hamixed deciduous/Pinus koraiensis fores......

2001年5～7月份,在黑龙江省小兴安岭凉水自然保护区白桦林设立临时标准地,采用'之'字形路线及土壤剖面取样法多点采取土壤样......