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Transformation of Carbon and Nitrogen by Earthworms in the Decomposition Processes of Broad-leaved Litters

DONG Weihua YIN Xiuqin

DONG Weihua, YIN Xiuqin. Transformation of Carbon and Nitrogen by Earthworms in the Decomposition Processes of Broad-leaved Litters[J]. 中国地理科学, 2007, 17(2): 166-172. doi: 10.1007/s11769-007-0166-y
引用本文: DONG Weihua, YIN Xiuqin. Transformation of Carbon and Nitrogen by Earthworms in the Decomposition Processes of Broad-leaved Litters[J]. 中国地理科学, 2007, 17(2): 166-172. doi: 10.1007/s11769-007-0166-y
DONG Weihua, YIN Xiuqin. Transformation of Carbon and Nitrogen by Earthworms in the Decomposition Processes of Broad-leaved Litters[J]. Chinese Geographical Science, 2007, 17(2): 166-172. doi: 10.1007/s11769-007-0166-y
Citation: DONG Weihua, YIN Xiuqin. Transformation of Carbon and Nitrogen by Earthworms in the Decomposition Processes of Broad-leaved Litters[J]. Chinese Geographical Science, 2007, 17(2): 166-172. doi: 10.1007/s11769-007-0166-y

Transformation of Carbon and Nitrogen by Earthworms in the Decomposition Processes of Broad-leaved Litters

doi: 10.1007/s11769-007-0166-y
基金项目: Under the auspices of the National Natural Science Foundation of China (No.40171053)
详细信息
    通讯作者:

    YIN Xiuqin.E-mail:yinxq773@nenu.edu.cn

Transformation of Carbon and Nitrogen by Earthworms in the Decomposition Processes of Broad-leaved Litters

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出版历程
  • 收稿日期:  2006-08-08
  • 修回日期:  2007-02-10
  • 刊出日期:  2007-06-20

Transformation of Carbon and Nitrogen by Earthworms in the Decomposition Processes of Broad-leaved Litters

doi: 10.1007/s11769-007-0166-y
    基金项目:  Under the auspices of the National Natural Science Foundation of China (No.40171053)
    通讯作者: YIN Xiuqin.E-mail:yinxq773@nenu.edu.cn

摘要: Earthworms are the important constituents in the decayed food web and the main ecological conditioners in the process of decomposition and nutrient mineralization. The transformation of organic carbon (C) and total nitrogen (N) in the broad-leaved litters ingested by earthworms was researched by means of a laboratory experiment. Experimental samples were collected from broad-leaved Korea Pine mixed forest in Liangshui National Natural Reserve (47°10′50″N, 128°53′20″E) in the northeastern Xiao Hinggan Mountains of Northeast China. The contents of organic C and total N in earthworms, leaf litters and earthworm faeces were analyzed. Results show that the organic C content was in the fol-lowing order: leaf litters>faeces>earthworms, while total N content was contrary to that of the organic C. The organic C contents in the different leaf litters were in the following order: Tilia amurensis>Betula costata>Acer mono, whereas the total N contents in the different leaf litters were: Betula costata>Tilia amurensis>Acer mono. The contents of organic C and total N in the faeces from the different leaf litters were almost consistent with the contents of the leaf litters. After the leaf litters were ingested by earthworms, the organic C, which was transformed to increase earthworms' weights, ac-counted for 3.90%–13.31% of the total ingestion by earthworms, while that in the earthworm faeces accounted for 6.14%–13.70%. The transformed organic C through the other metabolism (e.g., respiration) of earthworms accounted for 75.04%–89.92%. The ingested organic C by earthworms was mostly used for metabolic activities. The N ingested by earthworms was less than organic C. It is estimated that 37.08% of total N was transformed to increase the earthworm's weight, 19.97% into earthworm faeces and 47.86% for the consumption of the earthworm's activities. The earthworms not only increased the content of organic C and total N in the soil, but also decreased the values of C/N in the soil and leaf litters. Earthworms play a major role in the leaf litters' decomposition and transformation.

English Abstract

DONG Weihua, YIN Xiuqin. Transformation of Carbon and Nitrogen by Earthworms in the Decomposition Processes of Broad-leaved Litters[J]. 中国地理科学, 2007, 17(2): 166-172. doi: 10.1007/s11769-007-0166-y
引用本文: DONG Weihua, YIN Xiuqin. Transformation of Carbon and Nitrogen by Earthworms in the Decomposition Processes of Broad-leaved Litters[J]. 中国地理科学, 2007, 17(2): 166-172. doi: 10.1007/s11769-007-0166-y
DONG Weihua, YIN Xiuqin. Transformation of Carbon and Nitrogen by Earthworms in the Decomposition Processes of Broad-leaved Litters[J]. Chinese Geographical Science, 2007, 17(2): 166-172. doi: 10.1007/s11769-007-0166-y
Citation: DONG Weihua, YIN Xiuqin. Transformation of Carbon and Nitrogen by Earthworms in the Decomposition Processes of Broad-leaved Litters[J]. Chinese Geographical Science, 2007, 17(2): 166-172. doi: 10.1007/s11769-007-0166-y

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