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当前位置: 首页 > 文章 > 苏北海堤基干林带杨树-刺槐混交林竞争效应研究 南京林业大学学报(自然科学版) 2011,35 (1) 43-46
Position: Home > Articles > Competition effect of Populus and Robinia pseudoacacia mixed forest in the coastal trunk shelterbelt in northern Jiangsu province Journal of Nanjing Forestry University(Natural Sciences Edition) 2011,35 (1) 43-46

苏北海堤基干林带杨树-刺槐混交林竞争效应研究

作  者：
芮雯奕;李淑琴;张纪林;卢义山;孙晓东;曹国华;徐亚明
单  位：
江苏省林业科学研究院;江苏省东台市林场
关键词：
杨树;刺槐;混交林;竞争效应
摘  要：
对江苏省泥质海岸带海堤12年生杨树-刺槐混交林进行了种群竞争研究。结果表明,在调查样地中,杨树与刺槐混交较刺槐纯林最少能够提高单位面积木材蓄积量35.1%。在杨树高优势度样地中,刺槐被压木比例高达64.1%,刺槐单木平均胸径仅为杨树低优势度样地中的55%。竞争分析显示,在杨树高优势度样地中,刺槐平均单木竞争强度高出杨树低优势度样地相应竞争强度的188%。杨树高优势度样地中刺槐来自杨树种间竞争的强度占其总竞争强度的比例高达81.9%,而在杨树低优势度样地中这一比例仅为35.5%。此外,杨树重要值相近的两块样地出现较大的生长及竞争差异。
译  名：
Competition effect of Populus and Robinia pseudoacacia mixed forest in the coastal trunk shelterbelt in northern Jiangsu province
作  者：
RUI Wenyi1,LI Shuqin1,ZHANG Jilin1,LU Yishan1,SUN Xiaodong2,CAO Guohua2,XU Yaming2(1.Jiangsu Academy of Forestry,Nanjing 211153,China;2.Dongtai Forest Farm,Jiangsu Province,Yancheng 224242,China)
关键词：
Populus;Robinia pseudoacacia;mixed forest;competition effect
摘  要：
In order to provide experiences for the construction of mixed forest,we conducted an investigation on a 12-year-old Robinia pseudoacacia and Populus mixed forest based on 3 typical sample plots.Results showed that the volume of per hectare can be enhanced up to 35.1 % higher in the Populus and R.pseudoacacia mixed forest than that in monospecific R.pseudoacacia forest at least.The rate of suppressed tree of R.pseudoacacia in the sample plot with high dominance of Populus was as high as 64.1 %.The competition intensity of R.pseudoacacia in the sample plot with high dominance of Populus was 188 % higher than that of with low dominance of Populus on average.Moreover,the interspecific competition of R.pseudoacacia accounted for 81.9 % in the sample plot with high dominance of Populus.However,it was only 35.5 % in that with low dominance of Populus.In addition,the growth and competition situation was different although Populus important value was similar.The above results suggest that the Populus and R.pseudoacacia mixed forest growth modeling based on their spatial competition disciplinarian should be studied for healthier mixed forests.

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