Soil respiration and carbon balance in farmland ecosystems on North China Plains
NIU Lingan, HAO Jinmin, ZHANG Baozhong, NIU Xinsheng, LU Zhenyu
Ecology and Environment . 2009, (3): 1054 -1060 .  DOI: 10.16258/j.cnki.1674-5906(2009)03-1054-07

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