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| 马占相思人工林生物量及营养元素分布研究 | |
| 引用本文： | 温中林,郑卫,陈日美.马占相思人工林生物量及营养元素分布研究[J].安徽农业科学,2010,38(27):15040-15045. |
| 作者姓名： | 温中林 郑卫 陈日美 |
| 作者单位： | 1. 广西生态工程职业技术学院,广西柳州,545004 2. 广西武鸣县林业局城厢林业站,广西武鸣,530100 3. 广西沙塘林场,广西柳州,545004 |
| 摘 要： | 通过选择立地条件相近的标准样地,对林龄为4、7、11年的马占相思人工林进行生物量及营养元素测定,研究马占相思林的生物量和营养元素（N、P、K、Ca、Mg、Fe、Mn、Cu、Zn、B）在各器官中的分布。结果表明,马占相思生物量随林龄的增大而逐渐积累;枯枝、根蔸在7～11年的生物量增长总量下降,其他器官则随年龄的增长呈上升趋势。从不同器官的营养元素含量来看,马占相思各器官中的大量营养元素含量以N最高,总的排列顺序为N〉Ca〉K〉Mg〉P,微量元素则以Mn为最高,依次排序为Mn〉Fe〉B〉Zn〉Cu。从不同元素在各个器官的分配来看,各营养元素贮量树干最高,细根最低,部分营养元素集中在树干、树枝、树皮和树叶中。 更多还原 |
| 关 键 词： | 马占相思 人工林 生物量及营养元素分布 |
Biomass and Nutrient Distribution of Acacia mangium Plantations |
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| Institution: | WEN Zhong-lin et al(Guangxi Eco-engineering Vocational College,Liuzhou,Guangxi 545004) |
| Abstract: | Acacia mangium plantations respectively at the age of stand of 4 years,7 years and 11 years were selected from standard plots with similar site conditions,and their biomass and nutrient elements(N,P,K,Ca,Mg,Fe,Mn,Cu,Zn,and B)were determined to reveal their distribution in different organs.The results showed that the biomass of A.mangium increased gradually with the age of stand.The biomass of stick and root stump declined between the age of stand of 7-11 years,but that of the other organs increased with the age of stand.N was the richest in the organs of A.mangium,and the contents of nutrients declined in the order of N>Ca>K>Mg>P.Among the trace elements,Mn content was the highest,and the contents of trace elements declined in the order of Mn>Fe>B>Zn>Cu.The nutrients were highest in tree trunks and lowest in fine roots,and some nutrients were mainly distributed in trunk,branches,bark and leaves. |
| Keywords: | Acacia mangium Plantation Biomass and nutrient distribution |
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