检索结果-南通市图书馆

Assessment of drought risk for winter wheat on the Huanghuaihai Plain under climate change using an epic model-based approach

引用

International Journal of Digital Earth 2022年第1期15卷 690-711页

作者： Yaojie Yue Wuqiong Yang Lin Wang Key Laboratory of Environmental Change and Natural Disaster of the Ministry of Education Faculty of Geographical ScienceBeijing Normal UniversityBeijingPeople’s Republic of China Department of Biological Systems Engineering University of Nebraska-LincolnLincolnNEUSA

Climate change-induced drought poses a serious negative impact on global crop production and food *** Huang Huai Hai(HHH)Plain,one of the most important grain production areas in China,is heavenly stricken by *** by formulating drought risk prevention strategies that adapt to climate change on the HHH Plain,therefore,the present study aims to quantitatively evaluate the winter wheat drought risk under multiple climate scenarios using the Environmental Policy Impact Climate(epic)*** on the well-validated epic model,the drought hazard intensity(dHI),physical vulnerability(pV),and drought risk(dR)of the HHH Plain from 2010 to 2099 are ***,the dR showed an increasing trend in the long term,the high dR areas increased by 0.63%and 1.18%under the RCP4.5 and RCP8.5 scenarios,***,dR showed a pattern of high in the south and low in the north whether under RCP4.5 or RCP8.5 ***,the dR was 0.211 under the RCP4.5 scenario which was slightly higher than that under the RCP8.5 scenario,*** Huanghuai Plain agricultural subregion will be a high dHI-pV-dR *** temperature increase might be the main factor affecting the wheat drought risk.

关键词： Climate change winter wheat drought risk representative concentration pathways(RCPs) epic model HuangHuaiHai Plain

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Maize drought disaster risk assessment of China based on epic model

引用

International Journal of Digital Earth 2012年第6期5卷 488-515页

作者： Huicong Jia Jingai Wang Chunxiang Cao Donghua Pan Peijun Shi State Key Laboratory of Remote Sensing Science Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal UniversityBeijing 100101P.R.China Key Laboratory of Regional Geography College of Geography and Remote Sensing ScienceBeijing Normal UniversityBeijing 100875P.R.China National Disaster Reduction Center of China Ministry of Civil Affairs of the People?s Republic of ChinaBeijing 100124P.R.China State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal UniversityBeijing 100875P.R.China

Digital Agriculture is one of the important applications of Digital *** the global climate changes and food security becomes an increasingly important issue,agriculture drought comes to the focus of *** is a typical monsoon climate country as well as an agricultural country with the world’s largest *** East Asian monsoon has had a tremendous impact upon agricultural ***,a maize drought disaster risk assessment,in line with the requirements of sustainable development of agriculture,is important for ensuring drought disaster reduction and food ***,soil,land use,and agro-meteorological observation information of the research area were collected,and based on the concept framework of‘hazard-inducing factors assessment(hazard)-vulnerability assessment of hazard-affected body(vulner-ability curve)-risk assessment(risk),’importing crop model epic(Erosion-Productivity Impact Calculator),using crop model simulation and digital mapping techniques,quantitative assessment of spatio-temporal distribution of maize drought in China was *** results showed that:in terms of 2,5,10,and 20 year return periods,the overall maize drought risk decreased gradually from northwest to southeast in the maize planting *** the 20 year return period,high risk value regions(drought loss rate]0.5)concentrate in the irrigated maize region of Northwest china,ecotone between agriculture and animal husbandry in Northern China,Hetao Irrigation Area,and north-central area of North China Plain,accounting for 6.41%of the total maize *** results can provide a scientific basis for the government’s decision-making in risk management and drought disaster prevention in China.

关键词： physical vulnerability risk assessment agriculture drought maize production epic model China Digital Earth GIS

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Simulating potential yields of Chinese super hybrid rice in Bangladesh,India and Myanmar with epic model

引用

Journal of Geographical Sciences 2018年第7期28卷 1020-1036页

作者：王小博王绍强陈敬华崔惠娟吴宜进 N H Ravindranath Atiq Rahman Key Lab of Ecosystem Network Observation and modelling Institute of Geographic Sciences and Natural Resources Research CAS University of Chinese Academy of Sciences College of Urban and Environmental Sciences Central China Normal University Centre for Sustainable Technologies India Institute of Science Bangladesh Centre for Advanced Studies

In this study, information is collected on the weather, soils, field management and agricultural statistics in the Bangladesh, India and Myanmar（BIM） region. Crop growth parameters within the epic（Environmental Policy Integrated Climate） model are calibrated using cultivar data and regional experimental records of indica hybrid rice Fyou498 and Fengliangyou4 in China. Potential yields of rice are then simulated in the BIM region from 1996 to 2005. The effects of local irrigation and fertilization levels on super hybrid rice yield are examined. The potential yields of Chinese hybrid rice at local irrigation and fertilization levels in 2000 and at full irrigation and rational fertilization levels are found to be 10.22 t/ha and 11.33 t/ha, respectively. The potential for increasing monsoon rice production in the study region is 227.71 million tons. The eastern Indo-Gangetic Plain in India, the southeast coast of India Peninsula and the Ayeyarwady Delta in Myanmar have the largest potentials for monsoon rice production. The northeastern and southwestern areas of the Deccan Plateau and the northwestern region of the Indo-Gangetic Plain need to improve irrigation equipment to meet the water-use requirements of high-yield rice. The central and southern plains in Myanmar and northeastern India need greater access to nitrogen fertilization for high-yield rice.

关键词： super hybrid rice potential productivity yield gap epic model Belt and Road Initiative

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Diverse effects of crop distribution and climate change on crop production in the agro-pastoral transitional zone of China

引用

Frontiers of Earth Science 2018年第2期12卷 408-419页

作者： Jianmin QIAO Deyong YU Qianfeng WANG Yupeng LIU Center for Human-Environment System Sustainability (CHESS) State Key Laboratory of Earth Surface Processes and Resource Ecology (ESPRE) College of Resources Science & Technology Faculty of Geographical Science Beijing Normal University Beijing 100875 China College of Environment and Resource Fuzhou University Fuzhou 350116 China

Both crop distribution and climate change are important drivers for crop production and can affect food security, which is an important requirement for sustainable development. However, their effects on crop production are confounded and warrant detailed investigation. As a key area for food production that is sensitive to climate change, the agro-pastoral transitional zone (APTZ) plays a significant role in regional food security. To investigate the respective effects of crop distribution and climate change on crop production, the well-established GIS-based Environmental Policy Integrated Climate (epic) model was adopted with different scenario designs in this study. From 1980 to 2010, the crop distribution for wheat, maize, and rice witnessed a dramatic change due to agricultural policy adjustments and ecological engineering-related construction in the APTZ. At the same time, notable climate change was observed. The simulation results indicated that the climate change had a positive impact on the crop production of wheat, maize, and rice, while the crop distribution change led to an increase in the production of maize and rice, but a decrease in the wheat production. Comparatively, crop distribution change had a larger impact on wheat (-1.71 x 10(6) t) and maize (8.53 x 10(6) t) production, whereas climate change exerted a greater effect on rice production (0.58 x 10(6) t), during the period from 1980 to 2010 in the APTZ. This study is helpful to understand the mechanism of the effects of crop distribution and climate change on crop production, and aid policy makers in reducing the threat of future food insecurity.

关键词： epic model crop production climate trends scenario designs crop distribution

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Spatial Analysis of the Soil Carbon Sequestration Potential of Crop-residue Return in China Based on model Simulation

引用

Journal of Resources and Ecology 2019年第2期10卷 184-195页

作者： CHEN Jinghua WANG Shaoqiang XU Xiyan SUN Leigang Key Laboratory of Ecosystem Network Observation and modelling Institute of Geographic Sciences and Natural Resources Research Beijing 100101China College of Resources and Environment University of Chinese Academy of Sciences Beijing 100049 China School of Geography and Information Engineering China University of Geosciences Wuhan 430074 China Ecosystems Services and Management Program International Institute for Applied Systems Analysis Laxenburg A-2361 Austria Key Laboratory of Regional Climate-Environment for East Asia Institute of Atmospheric Physics Beijing 100029 China Hebei Engineering Research Center for Geographic Information Application Institute of Geographical Sciences Hebei Academy of SciencesShijiazhuang 050011 China

Crop-residue return is a recommended practice for soil and nutrient management and is important in soil organic carbon(SOC)sequestration and CO2 *** applied a process-based Environmental Policy Integrated Climate(epic)model to simulate the spatial pattern of topsoil organic carbon changes from 2001 to 2010under 4 crop-residue return scenarios in *** carbon loss(28.89 Tg yr–1)with all crop-residue removal(CR0%)was partly reduced by 22.38 Tg C yr–1 under the status quo CR30%(30% of crop-residue return).The topsoil in cropland of China would become a net carbon sink if the crop-residue return rate was increased from 30%to 50%,or even 75%.The national SOC sequestration potential of cropland was estimated to be 25.53 Tg C yr–1 in CR50%and 52.85 Tg C yr–1 in CR75%,but with high spatial variability across *** highest rate of SOC sequestration potential in density occurred in Northwest and North China while the lowest was in East *** in North China tended to have stronger regional SOC sequestration potential in *** the decade,the reduced CO2 emissions from enhanced topsoil carbon in CR50%and CR75% were equivalent to 1.4% and 2.9%of the total CO2 emissions from fossil fuels and cement production in China,*** conclusion,we recommend encouraging farmers to return crop-residue instead of burning in order to improve soil properties and alleviate atmospheric CO2 rises,especially in North China.

关键词： cropland crop-residue return soil carbon sequestration spatial pattern epic model

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：