首页|期刊导航|中国农业科学(英文版)|Simulation and Prediction of Soil Organic Carbon Dynamics in Jiangsu Province Based on Model and GIS Techniques
中国农业科学(英文版)2003，Vol.2Issue(9)：1007-1013,7.
Simulation and Prediction of Soil Organic Carbon Dynamics in Jiangsu Province Based on Model and GIS Techniques
Simulation and Prediction of Soil Organic Carbon Dynamics in Jiangsu Province Based on Model and GIS Techniques
摘要
Abstract
Based on the databases of soils, meteorology, crop production, and agricultural management, changes in the soil organic carbon (SOC) of agro-ecosystems in Jiangsu Province were simulated by using a soil organic carbon model with a linkage of GIS. Four data sets of soil organic carbon measured from various field experiments in Jiangsu Province were used to validate the model. It was demonstrated that the model simulation in general agreed with the field measurements. Model simulation indicated that the SOC content in approximately 77% of the agricultural soils in Jiangsu Province has increased since the Second National Soil Survey completed in the early 1980s. Compared with the values in 1985, the SOC content in 2000 was estimated to increase by 1.0-3.0 g kg-1 for the north and the coastal areas of the province, and by 3.5-5.0 g kg-1 for the region of Tai Lake in the south. A slight decrease (about 0.5-1.5 g kg-1 ) was estimated for the central region of Jiangsu Province and the Nanjing-Zhenjiang hilly area. Model prediction for 2010 A.D. under two scena-rios, i.e., with 30 and 50% of the harvested crop straw incorporation, suggested that the SOC in Jiangsu Province would increase, and thus that the agricultural soils would have potential as organic carbon storage. The incorporation of crop straw into soils is of great benefit to increase soil carbon storage, consequently to benefit the control of the rise of atmospheric CO2 concentration and to maintain the sustainable development of agriculture.关键词
Soil/Organic carbon/Model/GIS/Jiangsu ProvinceKey words
Soil/Organic carbon/Model/GIS/Jiangsu Province分类
农业科技引用本文复制引用
SHEN Yu,HUANG Yao,ZONG Liang-gang,ZHANG Wen,XU Mao,LIU Lin-wang..Simulation and Prediction of Soil Organic Carbon Dynamics in Jiangsu Province Based on Model and GIS Techniques[J].中国农业科学(英文版),2003,2(9):1007-1013,7.基金项目
This work was supported by the grants of the Knowledge Innovation Program of the Chinese Academy of Sciences (KZCX1-SW-01-13) and the Hundred Talents Program launched by the Chinese Academy of Sciences. （KZCX1-SW-01-13）
