The results showed that nutrients contents of the tree leaves and contents of the available nutrients of soil in the mixed stand and pure one varied with seasons of the year.
结果表明，一年中混交林及纯林土壤速效养分和叶养分含量随季节而异。
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。
Also, the tree growth and the soil enzyme activity of mixed stand were all better than that of the pure stands.
在树木生长表现和土壤酶活性发挥方面，混交林优于纯林。
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