四川桤木人工林生态系统养分的积累与分布 |
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引用本文: | 郭天峰,冯汉华,徐期瑚.四川桤木人工林生态系统养分的积累与分布[J].四川林业科技,2009,30(4):89-91. |
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作者姓名: | 郭天峰 冯汉华 徐期瑚 |
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作者单位: | 1. 广东省龙眼洞林场,广东,广州,510520 2. 广东省林业调查规划院,广东,广州,510520 |
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摘 要: | 本文通过对5年生、8年生、14年生的四川桤木人工林生态系统的乔木层、活地被物层、枯枝落叶层的养分积累的研究表明:随着年龄的增加,各种元素的积累总量也在增加,且各层次中大量元素的积累总量也随着年龄的增加而增加。各种大量元素的积累总量都是:N〉Ca〉K〉Mg〉P;各种微量元素的积累总量都是:Fe〉Mn〉Zn〉、Cu〉Pb〉Ni〉Cd。
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关 键 词: | 乔木层 活地被物层 枯枝落叶层 大量元素 微量元素 养分积累 |
The Accumulation and Distribution of Nutrients of Artificial Alnus cremastogyne Forests |
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Institution: | GUO Tian-feng, FENG Han-hua, XU Qi-hu ( 1. Longyandong Forest Farm of Guangdong Province, Guangzhou 510520, Guangdong; 2. Forest Inventory and Plan Institute of Guangdong Province, Guangzhou 510520, Guangdong) |
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Abstract: | In this paper, an analysis is made of the nutrient accumulation of three layers in Alnus cremastogyne forest ecosystems at three different ages. The results have shown that macro-elements and micro-elements of Alnus cremastogyne forest ecosystem increases with the age, and macro-elements in the layers of Alnus cremastogyne forest ecosystem increases with the age. In the ecosystem of three kinds of forest, the content sequence of macro-elements is the same, which is ordered as follows: N 〉 Ca 〉 K 〉 Mg 〉 P; and the content sequence of micro-elements is the same,which is ordered as follows: Fe 〉 Mn 〉 Zn 〉 Cu 〉 Pb 〉 Ni 〉 Cd. |
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Keywords: | Tree layer A live understorey Litter storey Macro-elements Micro-elements Nutrient accumulation |
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