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Quantification of net carbon flux from plastic greenhouse vegetable cultivation: a full carbon cycle analysis |
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| Authors: | Wang Yan Xu Hao Wu Xu Zhu Yimei Gu Baojing Niu Xiaoyin Liu Anqin Peng Changhui Ge Ying Chang Jie |
| Institution: | a College of Life Sciences, Zhejiang University, 388 Yuhangtang Road, Zhejiang Province, Hangzhou 310058, China b Institut des sciences de l’environnement, Département des sciences biologiques, Université du Quebec à Montréal, Case postale 8888, Succursale Centre-Ville, Montréal, QC, Canada H3C 3P8 c College of Resource and Environmental Engineering, Shandong University of Technology, China |
| Abstract: | Plastic greenhouse vegetable cultivation (PGVC) has played a vital role in increasing incomes of farmers and expanded dramatically in last several decades. However, carbon budget after conversion from conventional vegetable cultivation (CVC) to PGVC has been poorly quantified. A full carbon cycle analysis was used to estimate the net carbon flux from PGVC systems based on the combination of data from both field observations and literatures. Carbon fixation was evaluated at two pre-selected locations in China. Results suggest that: (1) the carbon sink of PGVC is 1.21 and 1.23 Mg C ha−1 yr−1 for temperate and subtropical area, respectively; (2) the conversion from CVC to PGVC could substantially enhance carbon sink potential by 8.6 times in the temperate area and by 1.3 times in the subtropical area; (3) the expansion of PGVC usage could enhance the potential carbon sink of arable land in China overall. |
| Keywords: | Agricultural practice Climatic area NEP NPP Soil organic carbon |
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