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[1]LIU Bin,LU Shaowei,SHI Yuan,et al.Study on Soil Respiration of Five Plant Communities in North of Huai River[J].Research of Soil and Water Conservation,2015,22(04):100-106,112.

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Study on Soil Respiration of Five Plant Communities in North of Huai River

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 22 Number of periods: 2015 04 Page number: 100-106,112 Column: Public date: 2015-08-28

Title:: Study on Soil Respiration of Five Plant Communities in North of Huai River

Author(s):: LIU Bin^1,2, LU Shaowei², SHI Yuan¹, LI Shaoning², CHEN Bo²; 1. College of Forestry, Agricultural University of Hebei, Baoding, Hebei 071000, China;
2. Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100093, China

Keywords:: soil respiration; different plant communities; Q₁₀ value; soil temperature

CLC:: S154.1;S181

DOI:: -

Abstract:: We studied the soil respiration of five plant communities in poplar plantation ecosystem in Xiping of He’nan Province by an automated soil CO₂ efflux measurement system (LI-8100, LI-COR, Lincoln, NE, USA), and compared their differences of soil respiration and analyzed its affecting factors. The results showed that:(1) the soil respiration of five plant communities was significantly different, diurnal variation and annual variation of soil respiration had the same tendency with the unimodal curve, and soil temperature variation followed with soil respiration. The sequence of soil respiration was:8 m wide woodland with Chenopodium serotinum Eleusine indica (L). Gaertn > 2 m wide woodland with Xanthium sibiricum Patrin > 8 m wide woodland with Polygonum hydropiper-Chenopodium album Linn > 8 m wide woodland with Xanthium sibiricum Patrin > 2 m wide woodland with nothing except a little litter; (2) single factor model was used to analyze the effect of soil temperature and moisture on the soil respiration (R_s=ae^bT_s or R_s=aW+b):soil temperature and moisture gave the explanation of 41%~79% and 2.3%~21% of seasonal variations of soil respiration with five plant communities, respectively; but double-factor model (R_s=ae^bT_sW^c) was used to analyze the relation, soil temperature and moisture commonly gave the explanation of 49.1%~86.7% of seasonal variations, which showed that soil respiration in five plant communities was influenced by soil temperature and moisture together; (3) with the respect to the soil respiration analyzed by Q₁₀=e^10b model, the sequence of Q₁₀ values was:8 m wide woodland with Chenopodium serotinum Eleusine indica (L). Gaertn (2.47) > 2 m wide woodland with Xanthium sibiricum Patrin (2.3) > 2 m wide woodland with nothing except a little litter (2.7) > 8 m wide woodland with Polygonum hydropiper-Chenopodium album Linn (2.59) > 8 m wide woodland with Xanthium sibiricum Patrin (2.22), and seasonal variation of Q₁₀ value was:spring > winter > autumn > summer, indicating that temperature sensitivity of soil respiration would decrease with rise of soil temperature.

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