树种组成 (species composition) 各林层、各树种蓄积量(断面积)所占的比重 纯林(pure stand):由一个树种组成的或混有其他树种但材积分别占不到10%的林分 混交林(mixed stand) :由两个或更多个树种组成,其中每个树种的...
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...特征:①在红树林环境中完成生育,即它们只出现于红树林,并不延伸出陆生群落;②在群落结构中起主要作用,能形成纯植从(pure stand);③具有适应环境的特化形态,最显著的是具气体交换功能的气生根、胎萌;④具有泌盐机制,它们能生长在海水中并频繁地泌盐;⑤孤立...
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pure stand-alone edition 纯粹意义的单机版
pure stand performance 纯林分性能
pure stand of chinese fir 杉木纯林
pure artificial even aged stand 人工同龄纯林
Pure Moso stand 毛竹纯林
pure and mixed stand 纯林和混交林
As compared with the China-fir pure stand, it could improve the woodland, and increase the fertility in...
与杉木纯林相比,黑荆和杉木混交能改良林地,提高土壤肥力。
As compared with the China-fir pure stand, it could improve the woodland, and increase the fertility in the mi...
与杉木纯林相比,黑荆和杉木混交能改良林地,提高土壤肥力。
Representative mixed plantations A, B of Cyclocarya paliurua Ilinsk and Chinese fir and pure stand of Chinese fir in Xiqin Experimental Forest Farm were selected, and their biomass was determined.
在西芹林场选择有代表性的青钱柳、杉木混交林A、B两种和杉木纯林,进行生物量测定。
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