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Ecological Operation In Yangtze River Basin With Yangtze River Simulator, Jun XIA, Zhonghui LIN, Chesheng ZHAN, Wenjuan GAO, Yunliang LI, Jing YAO, Sidong ZENG, Renyong HUANG, Hongzhu WANG 2023 State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China CAS Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China

Ecological Operation In Yangtze River Basin With Yangtze River Simulator, Jun Xia, Zhonghui Lin, Chesheng Zhan, Wenjuan Gao, Yunliang Li, Jing Yao, Sidong Zeng, Renyong Huang, Hongzhu Wang

Bulletin of Chinese Academy of Sciences (Chinese Version)

Ecological protection and green development in the Yangtze River basin are critical to the ecological construction of a Beautiful China. This study analyzes the current situation and main problems of the water ecology in the Yangtze River basin, and introduces the development of the Yangtze River Simulator, and the design for the ecological operation of the Three Gorges Reservoir, the main river, and the lakes connected to the river. Through the simulation of the main stream water ecology and lake water ecology by the Yangtze River Simulator, the optimization plan for the ecological regulation of the Three Gorges Reservoir was …


Opportunities And Challenges In Monitoring Cultivated Land Red Line In Big Data Era, Jinwei DONG, Yifeng CUI, Yuanyuan DI, Xuan GAO, Xi CHEN, Linsheng YANG, Yumei CAI, Jia NING, Jiyuan LIU 2023 Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China University of Chinese Academy of Sciences, Beijing 100049, China

Opportunities And Challenges In Monitoring Cultivated Land Red Line In Big Data Era, Jinwei Dong, Yifeng Cui, Yuanyuan Di, Xuan Gao, Xi Chen, Linsheng Yang, Yumei Cai, Jia Ning, Jiyuan Liu

Bulletin of Chinese Academy of Sciences (Chinese Version)

The demographic reality of a large population and limited land resources in China necessitates the implementation of the world’s most stringent cultivated land protection system. Effective, timely, and accurate monitoring of the status of cultivated land protection red line is essential to ensuring cultivated land protection and food security. The development of cutting-edge technologies such as remote sensing big data, cloud computing, and artificial intelligence has provided new opportunities for cultivated land control and monitoring. This article systematically elaborates on the current research status and challenges in the field of cultivated land protection redline control and monitoring, including the establishment …


Progress And Prospects On Institutional System Construction Of Ecological Civilization In China, Linsheng YANG, Yanan GUO, Huiyi ZHU, Gaodi XIE, Xiaoyong LIAO, Quansheng GE 2023 Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China

Progress And Prospects On Institutional System Construction Of Ecological Civilization In China, Linsheng Yang, Yanan Guo, Huiyi Zhu, Gaodi Xie, Xiaoyong Liao, Quansheng Ge

Bulletin of Chinese Academy of Sciences (Chinese Version)

Since the 18th National Congress of the Communist Party of China, the construction of Ecological Civilization (EC) in China has undergone historic, transitional, and comprehensive changes from theory to practice. The construction of system is the core content and the basic guarantee for the success of EC construction. Based on the government documents of EC construction and related research literatures, this study analyzes the formation and evolution characteristics of China’s EC construction system, parses the development process of representative innovation policies, and then predicts the trend of the further deepening reform of EC system. The results show that the relevant …


Synthetical Solution Of Disaster Risk Reduction And Green Development: A Novel Mode Promoting High-Quality Development In Mountain Areas Of China, Ming LI, Qin LIU, Yukuan WANG, Peng CUI, Xing GAO, Baofeng DI, Jinfeng LIU, Shengwen QI, Rong CHEN, Chunping TAN, Mengzhen XU, Hao SUN, Jianqiang ZHANG, Jiangang CHEN, Qiang ZOU 2023 Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610299, China

Synthetical Solution Of Disaster Risk Reduction And Green Development: A Novel Mode Promoting High-Quality Development In Mountain Areas Of China, Ming Li, Qin Liu, Yukuan Wang, Peng Cui, Xing Gao, Baofeng Di, Jinfeng Liu, Shengwen Qi, Rong Chen, Chunping Tan, Mengzhen Xu, Hao Sun, Jianqiang Zhang, Jiangang Chen, Qiang Zou

Bulletin of Chinese Academy of Sciences (Chinese Version)

China is a mountainous country, with hills, mountains, and plateaus cover about two-thirds of its total land area. The vast area, huge population, rich natural resources, and great potential of development in mountain areas make them the most important “rear garden” supporting the sustainable development of the whole country. Nevertheless, China’s mountain areas are also prone to various kinds of natural disasters, and thus formed a scenario of high overlap between the high-risk zone of natural disasters and the lagging zone of social and economic development. And such scenario has caused significant waste of various related inputs, and becoming a …


Conception On Asian Elephant Ecological Corridor Planning With Implications For Conservation, Xueyou LI, Qiupeng YU, Zhechang HU, Xuelong JIANG 2023 State Key Laboratory of Genetic Resources and Evolution & Yunnan Key Laboratory of Biodiversity and Ecological Conservation of Gaoligong Mountain, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, China

Conception On Asian Elephant Ecological Corridor Planning With Implications For Conservation, Xueyou Li, Qiupeng Yu, Zhechang Hu, Xuelong Jiang

Bulletin of Chinese Academy of Sciences (Chinese Version)

In order to practice the concept of coordinated development of “Lucid Waters and Lush Mountains are Invaluable Assets” and “mountains, rivers, forests, farmlands, lakes, grasslands and deserts are part of the community of life”, this study takes “pursuing green development and promoting harmony between humanity and nature” proposed in the report of the 20th National Congress of the Communist Party of China as the theoretical guidance. With the goal of enhancing ecosystem integrity and connectivity, enhancing population communication, enhancing population viability, and providing a model for the construction of ecological corridors for flagship species, based on the current distribution and …


Developing Characteristic Resource Plants To Build A Beautiful China, Lei SHI, Zheng'an LIU, Lijun WANG, Qingyan SHU, Meiyu SUN, Wei DUAN, Hui LI 2023 Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China China National Botanical Garden, Beijing 100093, China State Key Laboratory of Plant Diversity and Specialty Crops, Beijing 100093, China Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China

Developing Characteristic Resource Plants To Build A Beautiful China, Lei Shi, Zheng'an Liu, Lijun Wang, Qingyan Shu, Meiyu Sun, Wei Duan, Hui Li

Bulletin of Chinese Academy of Sciences (Chinese Version)

It is an important way to solve the contradiction among ecology, production and life in natural protected areas and ecologically fragile region by constructing the three-production integration mode of characteristic resource plants. In order to fully tap and make use of the outstanding characteristics of oil tree peony, wine grape and aromatic plants, this study carried out technology integration of variety screening, planting, harvesting, processing, product research and development, and industrialization demonstration in and around natural protected areas and ecologically fragile region. Through the economic benefits generated, the life of the people in the natural protected areas and ecologically fragile …


Effectiveness And Challenges Of Aquatic Ecological Restoration Of Chishui River In Upper Yangtze River, Fei LIU, Huanzhang LIU 2023 Institutes of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China

Effectiveness And Challenges Of Aquatic Ecological Restoration Of Chishui River In Upper Yangtze River, Fei Liu, Huanzhang Liu

Bulletin of Chinese Academy of Sciences (Chinese Version)

“To set an example of green development and strength ecological environmental protection in the Chishui River basin” is an important proposal listed in the Outline of the 14th Five-Year Plan (2021--2025) for National Economic and Social Development and Vision 2035 of the People’s Republic of China. Strengthening eco-environmental protection in the Chishui River will play an exemplary and leading role in maintaining fish diversity of the upper Yangtze River, promoting regional high-quality development, and creating a new situation of ecological civilization and Beautiful China. This study interprets the ecological functions of the Chishui River in the upper Yangtze River, expounds …


Impacts, Contributing Factors And Countermeasures Of Extreme Droughts In Poyang Lake, Qi ZHANG, Chenyang XUE, Jun XIA 2023 Yangtze Institute for Conservation and Development, Hohai University, Nanjing 210098, China

Impacts, Contributing Factors And Countermeasures Of Extreme Droughts In Poyang Lake, Qi Zhang, Chenyang Xue, Jun Xia

Bulletin of Chinese Academy of Sciences (Chinese Version)

In the past 20 years, the hydrological regime of Poyang Lake changed significantly. The lake water level has been continuously decreasing, resulting in severe droughts. In particular, an extreme drought occurred in 2022, when the lake area shrank to less than 300 km2. The 2022 extreme drought in Poyang Lake had great impacts on economy, society and ecological environment, which aroused great attentions and wide concerns. Based on long-term data series of meteorological and hydrological data and the existing research outcomes and with the aid of hydrological modeling, this study analyzed the impacts and contributing factors of the 2022 drought …


Ten Problems And Solutions For Restoration Of Karst Ecosystem In Southwest China, Xiaoyong BAI, Sirui ZHANG, Chen RAN, Luhua WU, Chaochao DU, Lei DAI, Xingyi YANG, Zilin LI, Yingying XUE, Mingkang LONG, Minghui LI, Shu YANG, Qing LUO, Xiaoyun ZHANG, Xiaoqian SHEN, Fei CHEN, Qin LI, Yuanhong DENG, Zeyin Hu, Chaojun LI 2023 State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China College of Environment and Ecology, Chongqing University, Chongqing 400044, China School of Geography and Environmental Science, Guizhou Normal University, Guiyang 550001, China CAS Center for Excellence in Quaternary Science and Global Change, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China

Ten Problems And Solutions For Restoration Of Karst Ecosystem In Southwest China, Xiaoyong Bai, Sirui Zhang, Chen Ran, Luhua Wu, Chaochao Du, Lei Dai, Xingyi Yang, Zilin Li, Yingying Xue, Mingkang Long, Minghui Li, Shu Yang, Qing Luo, Xiaoyun Zhang, Xiaoqian Shen, Fei Chen, Qin Li, Yuanhong Deng, Zeyin Hu, Chaojun Li

Bulletin of Chinese Academy of Sciences (Chinese Version)

The karst areas in southwest China are one of the key but difficult areas targeted in the “Beautiful China” construction initiative, which focuses on soil erosion, proportion of farmland, water pollution, karst drought, ecological restoration, carbon sink, ecological effects of urbanization, rocky desertification management indicators, and biodiversity and sustainability assessment. The study synthesizes the knowledge accumulated during ecological restoration practice in karst areas into 10 problems and solutions that are strong, universal and empirically supported. These problems and solutions help to explain the challenges of achieving sustainability in karst ecology restoration and thus point to solutions. They constitute a core …


An Innovative Restoration Mode “Macrophytes–Fishes–Benthons–Birds” Implemented In Aesthetic Plateau Wetlands, Junxing YANG, Xiaoai WANG, Xiaofu PAN, Yuanwe ZHANG, Heqi WU, Anli WU 2023 Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, China

An Innovative Restoration Mode “Macrophytes–Fishes–Benthons–Birds” Implemented In Aesthetic Plateau Wetlands, Junxing Yang, Xiaoai Wang, Xiaofu Pan, Yuanwe Zhang, Heqi Wu, Anli Wu

Bulletin of Chinese Academy of Sciences (Chinese Version)

Affected by both increasing human activities and climate change, Yunnan Plateau lakes were faced with threats such as water level decreasing, water-body reducing, and severe pollution. Many indigenous species were endangered or even disappeared. The ecological restorations implemented since 1980s almost all used alien species. As an inevitable result, severe negative impacts from alien species were observed on the Plateau wetland ecosystem and indigenous species. To solve these problems, with the support of relevant projects, an innovative restoration mode mainly with indigenous flag-species “macrophytes – fishes – benthons – birds” was proposed. This innovative mode was implemented respectively in Dianchi …


Control Of Invasive Plant Spartina Alterniflora: Concept, Technology And Practice, Baohua XIE, Guangxuan HAN 2023 CAS Key Laboratory of Coastal Environmental Processes and Ecological Restoration/Shandong Key Laboratory of Coastal Environmental Processes, Yantai Coastal Zone Institute, Chinese Academy of Sciences, Yantai 264003, China Yellow River Delta Ecology Research Station of Coastal Wetland, Chinese Academy of Sciences, Dongying 257500, China

Control Of Invasive Plant Spartina Alterniflora: Concept, Technology And Practice, Baohua Xie, Guangxuan Han

Bulletin of Chinese Academy of Sciences (Chinese Version)

Alien Species Spartina alterniflora occupy the living space of native animals and plants, and lead to the reduction of biodiversity in the intertidal zone and wetland ecological service functions. Therefore, it is urgent to curb the rapid expansion of S. alterniflora in China’s coastal areas. This paper introduced the invasion situation and main ecological hazards of S. alterniflora in China, as well as put forward the concept of S. alterniflora control of “hazard assessment – zoning control – monitoring and early warning”. We summarized the control technologies of S. alterniflora at home and abroad and the current situation of S. …


Five Issues And Countermeasures Of China Cropland Resource Use, Sijing YE, Changqing SONG, Changxiu CHENG, Peichao GAO, Shi SHEN, Wangshu MU 2023 State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China

Five Issues And Countermeasures Of China Cropland Resource Use, Sijing Ye, Changqing Song, Changxiu Cheng, Peichao Gao, Shi Shen, Wangshu Mu

Bulletin of Chinese Academy of Sciences (Chinese Version)

Understand the cropland use situation, analyze management countermeasures, and explore the regional suitable cropland use mode are important prerequisites for the implementation of the strictest protection of cultivated land strategy with Chinese characteristics. At present, the cropland resource utilization in China is facing the five issues of non-agricultural, non-grain, fragmentation, marginalization, and ecological degradation. This study estimates the spatial-temporal changes of these cropland use issues in China, analyzes the challenges of cropland use governance from the aspects of complex driving factors, phase characteristics, cognitive differences of responsible subjects, and dynamic changes of external factors. On this basis, the countermeasures of …


Research On Geographical Landscape Design Of Ecological Civilization Construction In China, Wenzhong ZHANG, Jianhui YU 2023 Key Laboratory of Regional Sustainable Development Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China University of Chinese Academy of Sciences, Beijing 100049, China

Research On Geographical Landscape Design Of Ecological Civilization Construction In China, Wenzhong Zhang, Jianhui Yu

Bulletin of Chinese Academy of Sciences (Chinese Version)

As the fundamental goal of ecological civilization construction in the new era of China, the building of a Beautiful China is an important measure to promote the study of Chinese man-land relationships to a higher level and a new stage of development. This study takes the construction of ecological civilization of Beautiful China as the orientation, and carries on the frame design to the geographical landscape. The geographical landscape takes the elements of geoscience as the research object and makes a series of reasonable outlook about man-land system according to the interaction mechanism of human-land relationship and the influence of …


Evolution Of Urbanized Area’S Entities And Flow Space Towards High-Quality Development Path In China, Mingxing CHEN, Liangkan CHEN, Yue XIAN, Jiafan CHENG, Longwu LIANG, Jing MA 2023 Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China CAS Key Laboratory of Regional Sustainable Development Modeling, Beijing 100101, China

Evolution Of Urbanized Area’S Entities And Flow Space Towards High-Quality Development Path In China, Mingxing Chen, Liangkan Chen, Yue Xian, Jiafan Cheng, Longwu Liang, Jing Ma

Bulletin of Chinese Academy of Sciences (Chinese Version)

The eco-environmental conservation and Beautiful China have entered the critical phase. Urbanized areas serve as important spatial carriers in the Beautiful China initiative scenarios, but the most prominent challenges in human-environment relationship and difficult points in building Beautiful China. This study focuses on the physical urban area, and utilizing big data technology to reexamine the spatiotemporal distribution and grouped evolution characteristics of impervious surface in cities, as well as the structural features of urban flow networks from space of flows. Moreover, preliminary thoughts and policy recommendations are provided for promoting high-quality development in urbanized areas of the new era. More …


Environmental Fate Of Sulfur In Sulphur Creek, Valles Caldera, Nm: Implications For Metal Transport And Water Quality, Daniel Lavery 2023 University of New Mexico - Main Campus

Environmental Fate Of Sulfur In Sulphur Creek, Valles Caldera, Nm: Implications For Metal Transport And Water Quality, Daniel Lavery

Earth and Planetary Sciences ETDs

The 1.2 Ma Valles Caldera in north-central New Mexico hosts a young igneous volcanic hydrothermal system after the model proposed in Goff and Janik (2000). The Sulphur Springs area within Valles Caldera is an acid-sulfate area typical of this model, discharging acidic waters (pH 1.5-3) formed by oxidation of magmatic H2S at the surface. We report on samples obtained from springs and streams collected between October 2021 and May 2023 in the Sulphur Creek and Alamo watersheds. Sulphur Creek receives input from Sulphur Springs and exhibits low pH (2-4) and high concentrations of Al (≤110 mg/L), Fe (≤60 …


Targeting Macrophytes: Increased Water Quality Through Optimized Vegetation Considerations For Constructed Wetlands, Austin McBrady 2023 Texas A&M University-San Antonio

Targeting Macrophytes: Increased Water Quality Through Optimized Vegetation Considerations For Constructed Wetlands, Austin Mcbrady

Masters Theses

This study of constructed wetland design investigated relationships between macrophyte species selection and planting density for water quality improvement. A lab-scale wetland was compared against a pilot-scale wetland in San Antonio, Texas at Mitchell Lake to measure differences in effluent water quality improvement using three native macrophyte species. Using a novel, two-phase method, a targeting macrophyte was identified from among other species based on its marked capability for improving water quality factors, then was planted in varied majority densities to compare differences in treatment effectiveness. The results of this study showed that this complimentary approach to wetland design displayed significant …


The Impact Of Conservation Land On Property Taxes And Municipal Budgets In Maine: A Mixed-Methods Study, Abigail Bennett 2023 University of Maine

The Impact Of Conservation Land On Property Taxes And Municipal Budgets In Maine: A Mixed-Methods Study, Abigail Bennett

Electronic Theses and Dissertations

This study is an interdisciplinary project done in collaboration with the Municipal Budget and Conservation Working group, a group of stakeholders that formed in 2018 to study conservation and town budgets. We use mixed methods to explore the impacts of conservation and municipal budgets in Maine. We use regression analysis on 21 years of panel data to identify causal relationships between conservation and mill rates, controlling for economic and town budget factors. We found statistically significant but small effects on average, with a 1% increase in conserved acres in a town associated with average tax bill increases of $1 or …


The Perception Of Natural Resource Management In Nebraska: Efforts For Cross-Boundary Collaborative Management, Daniel Morales 2023 University of Nebraska-Lincoln

The Perception Of Natural Resource Management In Nebraska: Efforts For Cross-Boundary Collaborative Management, Daniel Morales

School of Natural Resources: Dissertations, Theses, and Student Research

Nebraska’s agricultural landscapes are rapidly changing, affecting natural resources and their successful management. I utilized two surveys and scenario planning (Chapters 1: statewide survey, 2: local survey, and 3: scenario-planning workshop) to investigate attitudes and perceptions of natural resource management and cross-boundary collaboration. My first objective focused on determining what prevents Nebraskans from addressing natural resources challenges, considering demographics amongst generations and the type of areas they live in (rural versus urban). The second objective focused on whether landowners engaged with their community in managing natural resources. The third objective was to develop alternative future scenarios for the Denton Hills …


The Influence Of Invasive Species On Fishers’ Satisfactions, Caroline M. LaPlante 2023 University of Nebraska-Lincoln

The Influence Of Invasive Species On Fishers’ Satisfactions, Caroline M. Laplante

School of Natural Resources: Dissertations, Theses, and Student Research

Invasives species are prevalent and widespread in North America. Outdoor recreational activities, such as fishing, introduce a point in which humans may interact with invasive species and have to adapt their own behaviors. Bigheaded carp in the Missouri River below Gavin’s Point Dam are a group of invasive fish species that were thought to be negatively relating to recreational fishers’ satisfactions. Using a content analysis and an importance-grid, we conclude that invasive species do not strongly relate to recreational paddlefish fishers’ satisfactions. Paddlefish fishers represent a small sub-set of recreational fishers in Nebraska and South Dakota. The content analysis revealed …


Understanding Avidities Of Recreational Activities For People Possessing Fishing Licenses And Residing In Urban Environments, Kyle F. Hansen 2023 University of Nebraska-Lincoln

Understanding Avidities Of Recreational Activities For People Possessing Fishing Licenses And Residing In Urban Environments, Kyle F. Hansen

School of Natural Resources: Dissertations, Theses, and Student Research

Recreational fishing is one of the world's most popular pastimes, wherein participation is associated with sociodemographic factors. Even so, fishing license sales are declining in the USA in conjunction with a reduction in rural populations as people move to urban areas. Thus, urban areas are constantly growing in population size, population diversity, and geographic size suggesting a need to understand fishing participation in these growing areas. Natural resource managers often use participation to understand recreationists, yet avidity could provide a new way to understand recreationists. The goal of our study is to understand what sociodemographic factors influence the fishing avidity …


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