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Changes of Soil Labile Organic Carbon in Different Land Uses in Sanjiang Plain, Heilongjiang Province

ZHANG Guilan

ZHANG Guilan. Changes of Soil Labile Organic Carbon in Different Land Uses in Sanjiang Plain, Heilongjiang Province[J]. 中国地理科学, 2010, 20(2): 139-143. doi: 10.1007/s11769-010-0139-4
引用本文: ZHANG Guilan. Changes of Soil Labile Organic Carbon in Different Land Uses in Sanjiang Plain, Heilongjiang Province[J]. 中国地理科学, 2010, 20(2): 139-143. doi: 10.1007/s11769-010-0139-4
ZHANG Guilan. Changes of Soil Labile Organic Carbon in Different Land Uses in Sanjiang Plain, Heilongjiang Province[J]. Chinese Geographical Science, 2010, 20(2): 139-143. doi: 10.1007/s11769-010-0139-4
Citation: ZHANG Guilan. Changes of Soil Labile Organic Carbon in Different Land Uses in Sanjiang Plain, Heilongjiang Province[J]. Chinese Geographical Science, 2010, 20(2): 139-143. doi: 10.1007/s11769-010-0139-4

Changes of Soil Labile Organic Carbon in Different Land Uses in Sanjiang Plain, Heilongjiang Province

doi: 10.1007/s11769-010-0139-4
基金项目: Under the auspices of National Natural Science Foundation of China (No. 30470340)
详细信息
    通讯作者:

    ZHANG Guilan.E-mail:zgl-2006@163.com

Changes of Soil Labile Organic Carbon in Different Land Uses in Sanjiang Plain, Heilongjiang Province

Funds: Under the auspices of National Natural Science Foundation of China (No. 30470340)
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出版历程
  • 收稿日期:  2009-04-20
  • 修回日期:  2009-11-09
  • 刊出日期:  2010-01-22

Changes of Soil Labile Organic Carbon in Different Land Uses in Sanjiang Plain, Heilongjiang Province

doi: 10.1007/s11769-010-0139-4
    基金项目:  Under the auspices of National Natural Science Foundation of China (No. 30470340)
    通讯作者: ZHANG Guilan.E-mail:zgl-2006@163.com

摘要: In the Sanjiang Plain,Northeast China,the natural wetland is undergoing a rapid conversion into agricultural land,which has resulted in drastic ecological changes in the region. To investigate the effects of different land uses on soil labile organic carbon,soils of Calamagrostis angustifolia wetland,Carex lasiocarpa wetland,dry farmland,paddy field,forest land and abandoned cultivated land were collected for measuring the contents of soil microbial biomass carbon (MBC),dissolved organic carbon (DOC),readily oxidizable carbon (ROC) and carbohydrate carbon (CHC). The results show that soil organic carbon contents follow the order: Carex lasiocarpa wetland>Calamagrostis angustifolia wetland>forest land>paddy field>dry farmland. The contents of MBC and DOC in Calamagrostis angustifolia and Carex lasiocarpa wetlands are significantly higher than those in other land use types. The contents of CHC and ROC are the highest in Calamagrostis angustifolia wetland and the lowest in dry farmland. The contents of all the labile organic carbon increase along with the years of abandonment of cultivated land. The ratios of MBC,DOC and ROC to SOC also follow the order:Carex lasiocarpa wetland>Calamagrostis angustifolia wetland>forest land>paddy field>dry farmland,while the ratio of CHC to SOC is paddy field>forest field>Carex lasiocarpa wetland>Carex lasiocarpa wetland>dry farmland. When natural wetlands were cultivated,the activity of soil organic carbon tends to reduce in some extent due to the disappearance of heterotrophic environment and the reduction of vegetation residue. Thus,the abandonment of cultivated land is an effective way for restoring soil organic carbon.

English Abstract

ZHANG Guilan. Changes of Soil Labile Organic Carbon in Different Land Uses in Sanjiang Plain, Heilongjiang Province[J]. 中国地理科学, 2010, 20(2): 139-143. doi: 10.1007/s11769-010-0139-4
引用本文: ZHANG Guilan. Changes of Soil Labile Organic Carbon in Different Land Uses in Sanjiang Plain, Heilongjiang Province[J]. 中国地理科学, 2010, 20(2): 139-143. doi: 10.1007/s11769-010-0139-4
ZHANG Guilan. Changes of Soil Labile Organic Carbon in Different Land Uses in Sanjiang Plain, Heilongjiang Province[J]. Chinese Geographical Science, 2010, 20(2): 139-143. doi: 10.1007/s11769-010-0139-4
Citation: ZHANG Guilan. Changes of Soil Labile Organic Carbon in Different Land Uses in Sanjiang Plain, Heilongjiang Province[J]. Chinese Geographical Science, 2010, 20(2): 139-143. doi: 10.1007/s11769-010-0139-4
参考文献 (17)

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