检索结果-南通市图书馆

Flood disaster monitoring based on Sentinel-1 data:A case study of Sihu Basin and huaibei plain,China

Water Science and Engineering 2021年第2期14卷 87-96页

作者： Xu Yuan Xiao-chun Zhang Xiu-gui Wang Yu Zhang State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan UniversityWuhan 430072China Spatial Information Technology Application Research Department Changjiang River Scientific Research InstituteWuhan 430010China

Summer floods occur frequently in many regions of China,affecting economic development and social *** sensing is a new technique in disaster *** this study,the Sihu Basin in Hubei Province of China and the huaibei plain in Anhui Province of China were selected as the study *** of backscattering coefficients in the decision tree method were calculated with the histogram analysis method,and flood disaster monitoring in the two study areas was conducted with the threshold method using Sentinel-1 satellite *** satellite-based flood disaster monitoring,the flooded maps and the areas of expanded water bodies and flooded crops were *** satellite-based monitoring maps were derived by comparing the expanded area of images during a flood disaster with that before the *** difference in spatiotemporal distribution of flood disasters in these two regions was *** results showed that flood disasters in the Sihu Basin occurred frequently in June and July,and flood disasters in the huaibei plain mostly occurred in August,with a high interannual *** disasters in the Sihu Basin were usually widespread,and the affected area was between Changhu and Honghu *** huaibei plain was affected by scattered *** annual mean percentages of flooded crop area were 14.91%and 3.74% in the Sihu Basin and huaibei plain,*** accuracies of the extracted flooded area in the Sihu Basin in 2016 and 2017 were 96.20% and 95.19%,respectively.

关键词： Flood disaster monitoring Sentinel-1 radar image Remote sensing Threshold method Sihu Basin huaibei plain

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

Assessment of Agricultural Drought Vulnerability Based on Crop Growth Stages:A Case Study of huaibei plain,China

引用

International Journal of Disaster Risk Science 2023年第2期14卷 209-222页

作者： Yanqi Wei Juliang Jin Haichao Li Yuliang Zhou Yi Cui Nii Amarquaye Commey Yuliang Zhang Shangming Jiang School of Energy and Power Engineering Xihua UniversityChengdu610039China School of Civil Engineering Hefei University of TechnologyHefei230009China Institute of Water Resources and Environmental Systems Engineering Hefei University of TechnologyHefei230009China State Key Laboratory of Hydroscience and Engineering Department of Hydraulic EngineeringTsinghua UniversityBeijing100084China Interdisciplinary Centre for River Basin Environment University of YamanashiKofu400-8510Japan Key Laboratory of Water Conservancy and Water Resources of Anhui Province Water Resources Research Institute of Anhui Province and Huaihe River CommissionMinistry of Water ResourcesHefei230088China

Climate change can lead to and intensify drought *** the vulnerability of disaster-affected elements is significant for understanding the mechanisms that transform drought intensity into eventual *** study proposed a growth-stage-based drought vulnerability index(GDVI)of soybean using meteorological,groundwater,land use,and field experiment data and crop growth model *** CROPGRO-Soybean model was used to simulate crop growth and water *** growth stages were considered since the sensitivity of soybean to drought is strictly related to the growth *** GDVI was applied to the huaibei plain,Anhui Province,China,with the goal of quantifying the spatiotemporal characteristics of soybean drought vulnerability in typical years and growth *** results show that:(1)The sensitivity of leaf-related parameters exceeded that of other parameters during the vegetative growth stage,whereas the top weight and grain yield showed a higher sensitivity in the reproductive growth stage;(2)A semi-logarithmic law can describe the relationship between the drought sensitivity indicators and the GDVI during the four growth *** pod-filling phase is the most vulnerable stage for water deficit and with the highest loss upper limit(over 70%);(3)The 2001 and 2002 seasons were the driest time during *** and Huainan Cities were more vulnerable to drought than other regions on the huaibei plain in 2001,while huaibei and Suzhou Cities were the most susceptible areas in *** results could provide effective decision support for the categorization of areas vulnerable to droughts.

关键词： Agricultural drought Drought vulnerability huaibei plain Soybean growth stages

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

Effect of climate change on the trends of evaporation of phreatic water from bare soil in huaibei plain, China

引用

Journal of Groundwater Science and Engineering 2017年第3期5卷 213-221页

作者： SHANG Man-ting LIU Pei-gui LEI Chao LIU Ming-chao WU Liang Hefei University of Technology 230009 Heifei Province China

When the soil condition and depth to water table stay constant, climate condition will then be the only determinant of evaporation intensity of phreatic water from bare soil. Based on a series of long-term quality-controlled data collected at the Wudaogou Hydrological Experiment Station in the huaibei plain, Anhui, China, the variation trends of the evaporation rate of phreatic water from bare soil were studied through the Mann-Kendall trend test and the linear regression trend test, followed by the study on the responses of evaporation to climate change. Results indicated that in the huaibei plain during 1991-2008, evaporation of phreatic water from bare soil tended to increase at a rate of 5% on monthly scale in March, June and July while in other months the increase was minor. On the seasonal basis, the evaporation saw significant increase in spring and summer. In addition, annual evaporation tended to grow evidently over time. When air temperature rises by 1 °C, the annual evaporation rate increases by 7.24–14.21%, while when the vapor pressure deficit rises by 10%, it changes from-0.09 to 5.40%. The study also provides references for further understanding of the trends and responses of regional evapotranspiration to climate change.

关键词： Climate change Evaporation of phreatic water from bare soil Fluvo-aquic soil huaibei plain Lime concretion black soil

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

From livelihood strategies to green actions:A study on the relationship between farmers'environmental awareness and pro-environmental sustainable behaviors in the huaibei plain

引用

Ecological Economy 2024年第4期20卷 319-332页

作者： GUAN Hai-bo HAN Xin-sheng SONG Ru-tao ZHANG Li-qun MEI Xiang ZHANG Shang-jia HAO Han-bing YANG Zheng YANG Xiao-man LIU Ling-e College of Resources and Environmental Economics Inner Mongolia University of Finance and EconomicsHuhhot 010070CHINA Resource Utilization and Environmental Protection Coordinated Development Academician Expert Work-station in the North of China Inner Mongolia University of Finance and EconomicsHohhot 010070CHINA Graduate School of Science and Technology University of TsukubaTsukuba 305-0006JAPAN

In order to explore the impact of changes in rural livelihoods in China on the environmental awareness and behavior of farmers,with the huaibei plain as an example,309 farmer households in Lingbi County in huaibei plain were *** variance analysis was used to determine the differences in environmental perceptions and pro-environmental behavior of farmers with different *** equation models were used to analyze the relationships between livelihood type and environmental perception and *** results show:(1)As the level of non-agricultural activities engaged in by farmers increases,their environmental perceptions shift,evidenced by a rise in both the Environmental Concern Index(ECI)and the Awareness of Pollution Hazards Index(APHI).However,there is a corresponding decrease in their Perception of Changes within the Agroecosystem(PCAE).(2)APHI caused by automobiles,pesticides,and fertilizers varies significantly among groups with different livelihood strategies(p<0.05).(3)Pro-environmental behavior(PEB),particularly in the realms of green consumption and waste management,correlates with the level of *** variations in these behaviors are observed among farmers with different livelihood strategies(p<0.05).(4)The livelihood strategies have significant direct impact on farmers’environmental perceptions(path coefficient 0.923 p<0.001)and a significant indirect impact on farmers’PEB(path coefficient 0.913 p<0.001).Thus,as farmers shift away from agriculture,their environmental perceptions and behaviors are *** livelihoods reduces dependence on natural resources and increases access to environmental *** diversification fosters greater awareness of environmental issues and a willingness of farmers to adopt environmentally friendly practices,positively impacting rural ***,by promoting diversified livelihoods,it is possible to create a powerful strategy for rural environment

关键词： livelihood strategy environmental perception environmental behavior the farmers huaibei plain

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

Study on Change Rules and Influencing Factors of Soil Moisture in huaibei plain

引用

Asian Agricultural Research 2021年第5期13卷 14-18页

作者： Lingjian KONG Zhenlong WANG Bing WANG Lei WANG Anhui&Huaihe River Institute of Hydraulic Research Bengbu 233000China Anhui Province Key Laboratory of Water Conservancy and Water Resources Bengbu 233000China

[Objectives]To study the relationship between soil water,groundwater burial depth,and precipitation for summer maize in huaibei plain.[Methods]The atmospheric precipitation,soil water and groundwater for the growth period of summer maize in huaibei plain were analyzed using the 26-year long series of data from the Wudaogou Hydrological Experimental Station,combined with the hydrogen and oxygen stable isotope tracing method.[Results]The average soil moisture content of summer maize in different growth periods showed a trend of first decreasing,then increasing and then decreasing with the increase of soil *** average soil moisture content was the lowest at the surface soil *** the characteristic values of hydrogen and oxygen isotopes of atmospheric precipitation,soil water and groundwater,it can be known that the average values ofδ18O andδD of soil water decreased with the increase of soil depth,indicating that soil moisture evaporation leads to the enrichment of soil heavy isotopes,and the degree of enrichment decreased from the surface layer to the deep layer of the *** seasonal variation of the stable isotope of hydrogen and oxygen in soil water declined with the increase of soil *** soil water changes at 30 cm and 50 cm soil depths were the most *** soil was easily recharged by precipitation,and soil evaporation was relatively strong.[Conclusions]The research results are favorable for in-depth understanding of the regional water cycle process,and are expected to provide a certain scientific basis for realizing the efficient and sustainable use of regional groundwater.

关键词： Soil water Precipitation huaibei plain Hydrogen and oxygen stable isotopes

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

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：