首页|期刊导航|中国农业科学（英文版）|Modeling the Impacts of Soil Organic Carbon Content of Croplands on Crop Yields in China
中国农业科学（英文版）2009，Vol.8Issue(4)：464-471,8.DOI:10.1016/S1671-2927(08)60233-3
Modeling the Impacts of Soil Organic Carbon Content of Croplands on Crop Yields in China
Modeling the Impacts of Soil Organic Carbon Content of Croplands on Crop Yields in China
摘要
Abstract
This study quantified the impacts of soil organic carbon(SOC)content on the grain yield of crops using a biogeochemical model(DNDC,denitrification-decomposition).Data on climate,soil properties,and farming management regimes of cropping systems were collected from six typical agricultural zones(northeast,north,northwest,mid-south,east and southwest regions of China,respectively)and integrated into a GIS database to support the model runs.According to the model,if the initial SOC content in the cropland was increased by 1g C kg-1,the crop yield may be increased by 176 kg ha-1 for maize in the northeast region,454 kg ha-1 for a maize-wheat rotation in the north region,328 kg ha-1 for maize in the northwest region,185 kg ha-1 for single-rice in the mid-south region,266 kg ha-1 for double-rice in east region,and 229 kg ha-1 for rice and wheat rotation in southwest region.There is a great potential for enhancing the crop yield by improving the SOC content in each region of China.关键词
soil organic carbon,grain yield,carbon sequestration,DNDC modelKey words
soil organic carbon,grain yield,carbon sequestration,DNDC model分类
农业科技引用本文复制引用
QIU Jian-jun,WANG Li-gang,LI Hu,TANG Hua-jun,LI Chang-sheng,Eric Van Ranst..Modeling the Impacts of Soil Organic Carbon Content of Croplands on Crop Yields in China[J].中国农业科学（英文版）,2009,8(4):464-471,8.基金项目
This work was supported by a bilateral scientific coop eration project financed by UGent-BoF,Belgium,and the Ministry of Science and Technology,China(2005-2),as well as by the Non-profit Research Foundation for Agriculture of China(200803036). （2005-2）
