Inversion Of Self-Potential Data Based On Improved Sparrow Search Algorithm,
2023
School of Geophysics and Measurement Control Technology, East China University of Technology, Nanchang 330013, China
Inversion Of Self-Potential Data Based On Improved Sparrow Search Algorithm, Lang Jianxiang, Tang Hongzhi, Ai Hanbing
Coal Geology & Exploration
Self-potential (SP) method is a natural source geophysical prospecting technology with low cost and simple operation for field observation. Generally, the inversion of SP data has the characteristics of ill-posedness and non-linearity. The conventional inversion algorithms are classified into the types of local optimization and global search. However, it is hard for the gradient-based local optimization algorithm to obtain the global optimal solution, and the inversion results are dependent on the construction of initial model. The traditional global search algorithm has the disadvantages of low convergence rate, insufficient ability of escaping local minima and instability. Thus, a new global optimization …
Forward Modeling Of Radio-Magnetotelluric Method Based On Julia Acceleration And Study On Effect Of Displacement Current,
2023
Engineering Research Center of Nuclear Technology Application (East China University of Technology), Ministry of Education, Nanchang 330013, China; School of Geophysics and Measurement-Control Technology, East China University of Technology, Nanchang 330013, China
Forward Modeling Of Radio-Magnetotelluric Method Based On Julia Acceleration And Study On Effect Of Displacement Current, Mei Zhuxu, Yuan Yuan, Zhou Feng, Zhou Cong, Zhang Lincheng
Coal Geology & Exploration
Radio-magnetotelluric method (RMT) is one of the important tools for shallow surface electromagnetic exploration. Since the exploration frequency band is 10‒300 kHz, the propagation of electromagnetic fields is greatly affected by the dielectric permittivity of the earth. The electromagnetic response calculated with traditional quasi-static conditions severely restricts the accuracy of RMT forward modeling and further affects the resolution of the inversion imaging. In response to this problem, a numerical simulation method of full-current RMT electromagnetic response based on Julia parallel acceleration was proposed. Then, the calculation of each frequency point was sent through the distributed computing in Julia to different …
A Fault Diagnosis Method Of Rescue Lifting Vehicle Based On Spectral Clustering,
2023
Xuzhou Heavy Machinery Co., Ltd., Xuzhou 221004, China
A Fault Diagnosis Method Of Rescue Lifting Vehicle Based On Spectral Clustering, Li Lijing, Chang Dashuai, Li Lei, Chai Junfei
Coal Geology & Exploration
In allusion to the characteristics of complex structure of rescue lifting vehicle, the poor independence of working condition and fault data, and the difficulty in fault diagnosis, we proposed a fault diagnosis algorithm of rescue lifting vehicle with the semi-supervised support vector machine in this paper. In the algorithm, the information on hidden features of the original fault data was mined with the idea of spectral clustering, to effectively distinguish the independent structural features of the fault information in the component system with different degrees of coupling. Firstly, a fault map was established based on the original input data. Then, …
From Space To The Streets: Leveraging Satellite Data For Air Pollution, Health, And Justice,
2023
George Washington University
From Space To The Streets: Leveraging Satellite Data For Air Pollution, Health, And Justice, Gaige Kerr
Sustainability Seminar Series
Ambient air disproportionately affects marginalized and minoritized communities in the United States. Satellite remote sensing provides crucial data needed to assess air pollution at a high spatial resolution and further understand the drivers, extent, and impacts of this form of environmental injustice. I provide a few vignettes to highlight how recent advances in remote sensing can inform and improve our understanding of environment health. First, satellite measurements and datasets that incorporate satellite data demonstrate the inequitable distribution of traffic-related pollutants such as nitrogen dioxide and fine particulate matter and how disparities have changed during recent years, including during the COVID-19 …
Using Satellites To Map The Urban Heat Island Effect And Using Products To Generate Public Action In Harrisonburg,
2023
Bridgewater College
Using Satellites To Map The Urban Heat Island Effect And Using Products To Generate Public Action In Harrisonburg, Trevor Brooks, Timothy A. Kreps
ASPIRE 2023
The Urban Heat Island effect (UHI) is a phenomenon where urban centers are hotter than their surrounding rural counterparts. Ever since it was first discovered there have been a variety of methods of mapping this effect from using terrestrial sensors to satellites. This study attempts to evaluate different mapping methods, specifically two different satellite methods (ECOSTRESS and MODIS). As well as a community driven mapping method that involved terrestrial sensors attached to cars. This study then discusses remedies to the UHI and documents efforts to remedy it through a partnership between researchers, the community, and the city of Harrisonburg as …
Something Fishy About Crime: How To Teach Conservation And Sustainable Use Of The Oceans, Seas, And Resources For Sustainable Development In An Animal Cruelty Criminal Justice Elective Course,
2023
West Chester University of Pennsylvania
Something Fishy About Crime: How To Teach Conservation And Sustainable Use Of The Oceans, Seas, And Resources For Sustainable Development In An Animal Cruelty Criminal Justice Elective Course, Cassandra L. Reyes
Sustainability Research & Practice Seminar Presentations
Professor Cassandra L. Reyes, Criminal Justice - Something Fishy about Crime: How to Teach Conservation and Sustainable Use of the Oceans, Seas, and Resources for Sustainable Development in an Animal Cruelty Criminal Justice Elective Course
Carbon Farming: A Preliminary Economic Analysis Of Carbon Credits For No-Till And Cover Crops,
2023
University of Nebraska-Lincoln
Carbon Farming: A Preliminary Economic Analysis Of Carbon Credits For No-Till And Cover Crops, Drew Havens, Richard K. Perrin, Lilyan E. Fulginiti
Cornhusker Economics
Summary Based on experimental data about the amount of carbon sequestered and estimated implementation costs, our preliminary results show that the average cost of sequestering carbon via no-till (about $22 per ton of CO2e) appears to be much lower than the $51 per ton social value of sequestering that ton. In contrast, our preliminary results show that the average costs of sequestration via adoption of cover crops is much higher, about $60 per ton. Depending on how accurate soil carbon models are in predicting sequestration on individual fields to qualify them for enrollment, reimbursement costs for planting cover …
Projected Long-Term Climate Trends Reveal The Critical Role Of Vapor Pressure
Deficit For Soybean Yields In The Us Midwest,
2023
USDA-ARS, University of Nebraska Lincoln
Projected Long-Term Climate Trends Reveal The Critical Role Of Vapor Pressure Deficit For Soybean Yields In The Us Midwest, Wenguang Sun, David Fleisher, Dennis Timlin, Chittaranjan Ray, Zhuangji Wang, Sahila Beegum, Vangimalla Reddy
Nebraska Water Center: Faculty Publications
Extreme climate events including heat waves and droughts are projected to become more frequent under future climate change conditions. However, the mechanisms between soybean yields and climate factors, specifically involving variable rainfall and high heat episodes, are still unclear, particularly with respect to spatial trends in the United States (US) Midwest. A recently modified version of the model GLYCIM was used to evaluate rainfed soybean production across 12 states at a 10 km spatial resolution for three time periods (2011–2020, 2051–2060, 2091–2099) under Representative Concentration Pathway (RCP) scenarios 4.5 and 8.5. Results showed that except for the northernmost Midwest counties, …
Carbon Emission And Sequestration During The End-Permian Mass Extinction,
2023
Montclair State University
Carbon Emission And Sequestration During The End-Permian Mass Extinction, Ying Cui
Sustainability Seminar Series
Dr. Ying Cui’s current projects include the carbon cycle feedbacks that aid in the recovery of climatic perturbation during the Paleocene-Eocene Thermal Maximum (PETM, 56 Ma) and the end-Permian mass extinction (EPME, 252 Ma). She uses novel isotopes such as boron, lithium and compound-specific carbon isotopes in sedimentary rocks to unravel changes in ocean chemistry, continental weathering, and changes in atmospheric CO2 levels. She will participate in an International ocean Discovery Project (IODP) Expedition 395 at Reykjanes Ridge and serve as an organic geochemist to understand the link between mantle convection and climate change in the late Cenozoic.
Ecological And Environmental Changes And Protection Measures Of Lakes In China,
2023
Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
Ecological And Environmental Changes And Protection Measures Of Lakes In China, Ganlin Zhang, Xiaohong Gu, Tao Zhao, Yunlin Zhang, Ligang Xu
Bulletin of Chinese Academy of Sciences (Chinese Version)
Lakes (including artificial reservoirs) are important surface water resources, and they are also an important part of the earth surface system consisting of "mountains, waters, forests, fields, lakes, grassland and desert". Based on the lake survey data and long-term monitoring data collected by the Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences as well as other institutions, this paper systematically analyzed the overall status and long-term trends of the ecological and environmental changes of natural and artificial lakes in China, focused on the ecological and environmental status and changes of typical lakes in the five major lake zones …
Achievement Of Wetland Protection And Restoration And Development Strategies In China,
2023
Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
Achievement Of Wetland Protection And Restoration And Development Strategies In China, Hui Zhu, Haitao Wu, Xiaoxu Xing, Tian Xie, Changchun Song, Guodong Wang, Ming Jiang
Bulletin of Chinese Academy of Sciences (Chinese Version)
Wetland provides various ecological functions, and wetland protection and restoration directly affect national security, sustainability of economy and society, as well as human well-being. This study has systematically summarized the current status of wetland resource and the achievement of wetland protection in China, and the conclusions will provide scientific support for the policy making in wetland protection and management. The area of wetland in China was 41.2×104 km2 based on remote sensing monitoring in 2020, which lead the first in Asia. Since the 18th National Congress of the Communist Party of China (CPC), the area of wetland has showed a …
Mountain Protection And Mountain Development In China: Review And Prospect,
2023
Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610299, China
Mountain Protection And Mountain Development In China: Review And Prospect, Anbang Wen, Qing Tang, Chaojun Ouyang, Bo Zhu, Yukuan Wang, Ainong Li, Shuai Li, Wanze Zhu, Lijun Liu
Bulletin of Chinese Academy of Sciences (Chinese Version)
China is a large mountainous country in the world, where the mountainous area is about two-thirds of the land area. In the past ten years, the coverage rate of mountain forest and grass vegetation has increased by 8.2%, the average value of mountain green coverage index has reached 82.1%, and vegetation coverage has reached the highest value since the founding of the People's Republic of China; The area of water and soil erosion has decreased by 275 000 square kilometers, and the annual soil erosion in mountainous areas has decreased by 27%. At present, the backbone system of mountain ecological …
Changes And Protection Suggestions In Water Resources And Ecological Environment In Arid Region Of Northwest China,
2023
Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
Changes And Protection Suggestions In Water Resources And Ecological Environment In Arid Region Of Northwest China, Yaning Chen, Zhongqin Li, Jianhua Xu, Yanjun Shen, Xiaoxu Xing, Tian Xie, Zhi Li, Linshan Yang, Haiyan Xi, Chenggang Zhu, Gonghuan Fang, Jianhua Si, Yuanming Zhang
Bulletin of Chinese Academy of Sciences (Chinese Version)
The arid region of Northwest China is one of the driest regions in the world and is characterized with severe water scarcity. Water shortage is the most critical natural factor limiting the high-quality economic and social development and ecological security in the arid region of Northwest China. Based on the long-term monitoring data from the field stations of Chinese Academy of Sciences, observation data of meteorological stations, water resources bulletin and the remote sensing data, this study systematically analyzes the basic characteristics of water resources and ecological environment in the arid region of Northwest China, assesses the changing trends of …
Past Achievements And Future Strategies Of Eco-Environmental Construction In Mega Urban Agglomerations In Eastern China,
2023
CAS Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
Past Achievements And Future Strategies Of Eco-Environmental Construction In Mega Urban Agglomerations In Eastern China, Lina Tang, Ting Lan, Xiaoxu Xing, Tian Xie, Weifeng Li, Chuanglin Fang, Yanni Cao, Yaoyang Xu, Dingkai Chen, Lin Wang, Zhifeng Wu, Zhibang Xu, Weiqi Zhou
Bulletin of Chinese Academy of Sciences (Chinese Version)
Beijing-Tianjin-Hebei region, Yangtze River Delta, and Guangdong-Hong Kong-Macao Greater Bay Area are the three largest urban agglomerations in China, and have been increasingly becoming the core engines of China's economic growth. Nevertheless, rapid regional urbanization accompanying high-intensity human activities has also brought enormous social and environmental pressure in these urban agglomerations, posing a grand challenge to urban and regional sustainability. This study conducts a cross-urban agglomeration comparison of the ecological and environmental changes over the past two decades. Using a combination of remotely sensed data, in-situ monitoring data, and environmental statistic data, the changes in four dimensions are quantified, namely …
Strategies For Achieving Agriculture Carbon Peak And Carbon Neutrality In China Based On View Of Biogeochemical Cycle,
2023
Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Strategies For Achieving Agriculture Carbon Peak And Carbon Neutrality In China Based On View Of Biogeochemical Cycle, Shiqi Yang, Xin Yan
Bulletin of Chinese Academy of Sciences (Chinese Version)
Biogeochemical cycle is the basic theory of matter (elements) flow among atmosphere, hydrosphere, biosphere and lithosphere, which provides important guidance to achieving the national goal of agriculture carbon peak (ACP) and agriculture carbon neutrality (ACN). As a basic industry, agriculture has large-scale temporal and spatial influence on the greenhouse effect, hence great importance should be attached to ACP and ACN in order to assist the overall strategy of achieving national carbon peak and neutrality. Based on the view of biogeochemical cycle and connotations of ACP and ACN, this article analyzes the paths to achieve ACP and ACN, and discusses the …
Enlightenment From Studies On Carbon Neutral Strategies Of Uk,
2023
Wuhan Library, Chinese Academy of Sciences, Wuhan 430071, China
Hubei Key Laboratory of Big Data in Science and Technology, Wuhan 430071, China
Enlightenment From Studies On Carbon Neutral Strategies Of Uk, Lanchun Li, Wei Chen, Fang Yue, Yun Tang
Bulletin of Chinese Academy of Sciences (Chinese Version)
The UK is a proponent and pioneer of carbon neutral strategic actions. In-depth analysis and comparison of the characteristics of the carbon neutral policy system between China and the UK will be of reference value for China to promote the deployment of carbon neutral actions. Based on content analysis and grounded theory method, the "3MS" analysis framework of macro-strategy, medium skeleton and microstructure are designed and put forward, and the overall text and logical characteristics of its policy are summarized. Research shows that at the overall level, the UK has basically formed the policy system of "1+1+N+X" for carbon neutrality …
Thoughts And Suggestions On Oasis Ecological Construction And Agricultural Development In Hexi Corridor,
2023
Linze Inland River Basin Research Station, Chinese Ecosystem Research Network, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
Thoughts And Suggestions On Oasis Ecological Construction And Agricultural Development In Hexi Corridor, Wenzhi Zhao, Heng Ren, Jun Du, Rong Yang, Qiyue Yang, Hu Liu
Bulletin of Chinese Academy of Sciences (Chinese Version)
Oasisization is an external manifestation of the temporal and spatial evolution of oasis in arid areas, and the regional water carrying capacity is the key to restricting oasis agriculture and ecological protection in arid areas. The Hexi Corridor is not only an important passage from the east to the west in China, but also an important carrier of regional development; it is not only an important ecological barrier in Northwest China, but also a typical irrigated agricultural area. After more than 60 years of construction, the Hexi Corridor has made remarkable achievements in social progress, traffic conditions, ecological construction and …
Analysis Of Germany’S Experience On Development Of Biosphere Reserves And Suggestions To China,
2023
Secretariat of Chinese National Committee for the UNESCO's Man and the Biosphere Programme, Beijing 100864, China
Bureau of International Cooperation, Chinese Academy of Sciences, Beijing 100864, China
Analysis Of Germany’S Experience On Development Of Biosphere Reserves And Suggestions To China, Yijie Xian, Ning Liu, Na Qiao, Qiang Fang, Qunli Han, Ding Wang
Bulletin of Chinese Academy of Sciences (Chinese Version)
Germany has integrated biosphere reserves into the national strategy of sustainable development, and has built an outstanding biosphere reserve system nationwide, which has played a key role in maintaining the stability of ecosystem, exploring sustainable use of natural resources, innovating social development models, prospering local economies and providing an important platform to carry out comprehensive research on human and nature relationship. The experience of Germany includes:long and solid accumulation in the development of protected areas; deep understanding from authorities and the folk of the concept of Man and the Biosphere Programme (MAB) and the value of biosphere reserves, and more …
Enhancement Of Coastal Blue Carbon: Concepts, Techniques, And Future Suggestions,
2023
CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
Shandong Key Laboratory of Coastal Environmental Processes, Yantai 264003, China
Yellow River Delta Ecology Research Station of Coastal Wetland, Chinese Academy of Sciences, Dongying 257500, China
Enhancement Of Coastal Blue Carbon: Concepts, Techniques, And Future Suggestions, Guangxuan Han, Weimin Song, Yuan Li, Leilei Xiao, Mingliang Zhao, Xiaojing Chu, Baohua Xie
Bulletin of Chinese Academy of Sciences (Chinese Version)
The blue carbon function and carbon sequestration potential of coastal ecosystems, such as salt marshes, mangroves and seagrass beds, have emerged as one of the long-term solutions to mitigate global climate change. However, the blue carbon sequestration technology has been neglected in most ecological protection and restoration projects of coastal ecosystems. Besides, in the process of project implementation and management, the dynamic monitoring and systematic evaluation of carbon sink are imperfect. This study proposes the concept of enhancement of coastal blue carbon, focusing on four key technologies of soil carbon emission reduction technology, plant carbon sequestration technology, soil microbial carbon …
Status Quo Of Research And Suggestions On Reduction Of Non-Co2 Greenhouse Gas Emission From Chinese Farmland,
2023
Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
Status Quo Of Research And Suggestions On Reduction Of Non-Co2 Greenhouse Gas Emission From Chinese Farmland, Guangbin Zhang, Jing Ma, Hua Xu, Xiaoyuan Yan
Bulletin of Chinese Academy of Sciences (Chinese Version)
The mitigation of greenhouse gas (GHG) emissions is of great significance for controlling global warming. In 2014, the CH4 and N2O emissions from farmland accounted for 4.3% of the total GHG emissions in China. After the carbon peak target in 2030, fossil energy in China will be gradually replaced by clean energy, and then the contribution of CH4 and N2O emissions from farmland will be enlarged, leaving that the urgency and importance of emission reduction becomes increasingly prominent. However, available technologies of emission mitigation have not been fully adopted and promoted due to the …
