A study of soil respiration of typical black soil in Songnen Plain, northeastern China.

Earth Science Frontiers ›› 2011, Vol. 18 ›› Issue (6): 101-106.

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A study of soil respiration of typical black soil in Songnen Plain, northeastern China.

1. College of Earth Sciences, Jilin University, Changchun 130061, China
2. Heilongjiang Academy of Geological Survey, Harbin 150036, China
3. School of Earth Sciences and Resources, China University of Geosciences(Beijing), Beijing 100083, China
4. Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China

Received:2011-09-26 Revised:2011-10-26 Online:2011-11-25 Published:2011-12-05
Supported by:
中国地质调查局地质调查工作项目（1212011087124）；国土资源部公益型行业专项（200911020）

Abstract

Abstract:

We measured soil respiration in different land uses, such as crop land, fallow land and uncultivated land, located in typical black soil area of Songnen Plain. Autotrophic and heterotrophic soil respiration was distinguished by trenching. Temperature sensitivity of soil respiration (Q10) was calculated in different land use respectively. The results indicated that soil respiration was controlled by many factors, such as soil temperature, soil moisture, vegetation types and cultivation activities. Diurnal soil respiration was dominated by temperature. Autotrophic respiration by plant root occupies 50% of the soil respiration in summer, but the ratio in spring and autumn is less than that in summer. Because of different vegetation types and different proportion of autotrophic soil respiration occupied, autotrophic soil respiration in different land use decreases in order of uncultivated land>fallow land>crop land. Q10 of soil respiration with plants is bigger than those without plants.

Key words: soil respiration, crop land, fallow land, uncultivated land, temperature, moisture

CLC Number:

S15
P595

LIU Guo-Dong, YANG Ke, CUI Yu-Jun, LI Ying. A study of soil respiration of typical black soil in Songnen Plain, northeastern China.[J]. Earth Science Frontiers, 2011, 18(6): 101-106.

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A study of soil respiration of typical black soil in Songnen Plain, northeastern China.

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