Scenario Analysis of Tillage, Residue and Fertilization Management Effects on Soil Organic Carbon Dynamics

WANG Xiao-Bin; CAI Dian-Xiong; W.B.HOOGMOED; O.OENEMA; U.D.PERDOK

首页> 外文期刊>土壤圈（英文版） >Scenario Analysis of Tillage, Residue and Fertilization Management Effects on Soil Organic Carbon Dynamics

【24h】

Scenario Analysis of Tillage, Residue and Fertilization Management Effects on Soil Organic Carbon Dynamics

机译：耕作，残留和施肥管理对土壤有机碳动态影响的情景分析

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

页面导航

摘要
著录项
相关主题

摘要

Based on data from 10-year field experiments on residue/fertilizer management in the dryland farming region of northern China, Century model was used to simulate the site-specific ecosystem dynamics through adjustment of the model's parameters, and the applicability of the model to propose soil organic carbon (SOC) management temporally and spatially, in cases such as of tillage/residue/fertilization management options, was identified via scenario analysis.Results between simulations and actual measurements were in close agreement when appropriate applications of stover,manure and inorganic fertilizer were combined. Simulations of extreme C/N ratios with added organic materials tended to underestimate the measured effects. Scenarios of changed tillage methods, residue practices and fertilization options showed potential to maintain and enhance SOC in the long run, while increasing inorganic N slowed down the SOC turnover rate but did not create a net C sink without any organic C input. The Century model simulation showed a good relationship between annual C inputs to the soil and the rate of C sequestration in the top 20 cm layer and provided quantitative estimations of changes in parameters crucial for sustainable land use and management. Conservation tillage practices for sustainable land use should be integrated with residue management and appreciable organic and inorganic fertilizer application, adapted according to the local residue resource, soil fertility and production conditions. At least 50%residue return into the soil was needed annually for maintenance of SOC balance, and manure amendment was important for enhancement of SOC in small crop-livestock systems in which crop residue land application was limited.

机译：根据中国北方旱地耕作区残渣/肥料管理的十年实地试验数据，使用Century模型通过调整模型参数来模拟特定地点的生态系统动态，并提出该模型的适用性。通过情景分析确定了耕作/残茬/施肥等管理方式在时间和空间上对土壤有机碳的管理。秸秆，粪肥和无机肥料的合理应用与模拟结果与实际测量结果基本吻合。被合并。添加有机材料对极端C / N比的模拟往往会低估所测量的效果。从长期来看，改变耕作方法，残留做法和施肥方案的情景显示了保持和增强SOC的潜力，而增加无机氮会减缓SOC的周转率，但没有任何有机C的输入不会产生净C汇。 Century模型模拟表明，每年向土壤中输入的C与顶部20 cm层中C的固存速率之间存在良好的关系，并提供了对可持续土地利用和管理至关重要的参数变化的定量估计。可持续耕地的保护性耕作方法应与残留物管理以及适当的有机和无机肥料施用相结合，并根据当地残留物资源，土壤肥力和生产条件进行调整。每年至少需要有50％的残留物返回土壤，以保持SOC平衡，而改良粪肥对于提高作物残渣土地利用受限的小型农畜系统中的SOC至关重要。

著录项

来源
《土壤圈（英文版）》 |2005年第4期|473-483|共11页
作者
WANG Xiao-Bin; CAI Dian-Xiong; W.B.HOOGMOED; O.OENEMA; U.D.PERDOK;
展开▼
作者单位

Soil and Fertilizer Institute, Chinese Academy of Agricultural Sciences, Beijing 100081 China;

Soil and Fertilizer Institute, Chinese Academy of Agricultural Sciences, Beijing 100081 China;

Soil Technology Group, Wageningen University, P. O. Box 17, 6700 AA Wageningen ,The Netherlands;

Soil Quality Group, Wageningen University, P. O. Box 8005, 6700 EC Wageningen ,The Netherlands;

Soil Technology Group, Wageningen University, P. O. Box 17, 6700 AA Wageningen ,The Netherlands;

展开▼
收录信息中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
原文格式 PDF
正文语种 chi
中图分类土壤学;
关键词
Century model; conservation tillage; crop residue; dryland; soil organic carbon;

机译：世纪模式保护耕作作物残留旱地土壤有机碳;

Scenario Analysis of Tillage, Residue and Fertilization Management Effects on Soil Organic Carbon Dynamics

摘要

著录项

相关主题

期刊订阅