生态科学2018，Vol.37Issue(3)：148-158,11.DOI:10.14108/j.cnki.1008-8873.2018.03.020
滨海盐渍土地区水稻田C、N及生物量动态变化的模拟与应用
Simulation of C, N and biomass dynamic change in coastal saline soil region paddy field
摘要
Abstract
The soil organic carbon (SOC), nitrogen (N) and biomass evolution are three significant factors in the coastal reclamation area, eastern China. Simulating paddy field C, N and biomass dynamic change though DNDC model in study area can reflect soil biogeochemical process and test model accuracy in saline soil. The results are as follows. (1) The RMSE of SOC was 0.069, ammonium nitrogen (NH4+-N) was 11.1, nitrate nitrogen (NO-3-N) was 0.28 and rice biomass was 397.92. (2) SOC and rice biomass simulation accuracy was the highest (RMSE ＜10%), and N simulation accuracy was higher (RMSE＜20%). (3) DNDC model could not only reflect SOC, N and biomass change correctly in rice growth period, but also reveal the relationships between fertilization and nitrogen content, nitrate nitrogen (NO-3-N) and soil water, ammonium nitrogen (NH4+-N) and nitrate nitrogen (NO-3-N) content.关键词
滨海盐渍土/DNDC模型/水稻田/碳氮/生物量/江苏省Key words
coastal saline soil/DNDC model/paddy field/C/N/biomass/Jiangsu Province分类
农业科技引用本文复制引用
李强,李建国,张忠启..滨海盐渍土地区水稻田C、N及生物量动态变化的模拟与应用[J].生态科学,2018,37(3):148-158,11.基金项目
国家自然科学基金项目(41701371, 41201213) （41701371, 41201213）
教育部人文社会科学研究一般项目(17YJCZH085) （17YJCZH085）
江苏省高校自然科学研究项目(17KJB170006) （17KJB170006）
江苏师范大学高校博士科研启动基金项目(15XLR017) （15XLR017）
江苏省研究生科研创新计划(KYCX17_1686) （KYCX17_1686）
江苏省高等学校大学生创新创业训练计划项目(201610320043Z, 201710320059Z) （201610320043Z, 201710320059Z）
土壤与农业可持续发展国家重点实验室开放基金项目(Y20160008) （Y20160008）
