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cje ›› 1988, Vol. ›› Issue (4): 7-13.

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Nutrient Accumulation, Distribution and Cycling in Chinese Fir-Homana Mixed Forest Ecosystem

Chen Chuying1, Wang Kaiping1, Zhang Jiawu1, Zheng Shiyu1, Zhao Jilu1, Deng Shijian1, Gao Hong1, Ma Jiaxi2, Li Shunming2, Xie Wencai2, Xiong Zuoping2   

  1. 1. Institute of Applied Ecology, Academia Sinica, Shenyang;
    2. Liuwan State Forest Farm of Guangxi Province
  • Received:1987-07-09 Online:1988-08-10

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Abstract: The study was made in, 1982—1985 for pure stand of 8 years old Chinese fir (A), pure stand of Homana (B), mixed stands C(A:B=8:2) and D (A:B=5:5). 1. The total accumulation of nutrient in tree layer were estimated to be 852.4, 624.2, 971.6 and 782.4kg/ha, and the total annual accumulation were 113.3, 93.5, 184.5,and 95.8kg/ha respectively. 2. The mean annual amount of litterfall shows B>D>C>A. 3. By returning the litters of Homana to the soil,the content of soil organic matter was increased, and the soil fertility and nutrient cycling were improved. Ratio of annual return to annual uptake of pure Homana or mixed stands were higher than that of pure Chinese fir stand.

Key words: Vesicular-arbuscular mycorrhizal, Maize, Acid phosphatase, Alkaline phosphatase