Subjects: Statistics >> Social Statistics submitted time 2023-12-03 Cooperative journals: 《中国科学院院刊》
Abstract： The Pearl River is the largest river flowing into the South China Sea in China. The unique natural environmental characteristics and geographical location make the Pearl River Basin (PRB) rich in natural resources and huge development potential, and it has an important strategic position in the construction of China’s ecological security system and national economic development planning. At present, the upper and middle reaches of the PRB consist of crucial part of China’s strategic pattern of ecological security, and the lower reach is the Guangdong-Hong Kong-Macao Greater Bay Area. However, influenced by multiple factors such as regional resource endowment and development conditions, there is a huge gap between the rich and the poor in the upper and lower reaches of the PRB and between the East and the West. The construction of the Guangdong-Hong Kong-Macao Greater Bay Area has insufficient momentum, and some local regions are facing numerous challenges such as resource shortage, ecological degradation, and environmental pollution. To comprehensively strengthen the ecological protection of the Pearl River Basin and promote the construction of the Guangdong-Hong Kong-Macao Greater Bay Area, it is recommended to carry out top-level design and scientific research urgently to form a synergistic development path based on strengthening ecological protection and green development in PRB to support the construction of the Guangdong-Hong Kong-Macao Greater Bay Area.
Subjects: Geosciences >> Other Disciplines of Geosciences submitted time 2023-08-23 Cooperative journals: 《中国科学院院刊》
Abstract： The ecological protection and high-quality development of the Yellow River Basin has been prioritized as a national strategy. The release and implementation of the Outline of the Yellow River Basin’ s Ecological Protection and High-quality Development Plan in 2021 have placed the Loess Plateau, located in the middle reach of the Yellow River, in a critical phase characterized by the need to sustain ecological restoration achievements while fostering socioeconomic progress. This study provides a comprehensive overview of the current conditions and issues related to ecological construction and socioeconomic development in the Loess Plateau. It proposes four specific suggestions focusing on improving ecosystem stability and sustainability, promoting a green transition in socioeconomic development, implementing scientific territorial planning, and adopting an integrated and coordinated approach to managing the entire Yellow River Basin during ecological restoration efforts. The study aims to provide scientific support for the ecological protection and high-quality development of both the Loess Plateau and the Yellow River Basin.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： The 20th Party Congress made a significant proposal: “advance the Beautiful China Initiative and take a holistic and systematic approach to the conservation and improvement of mountains, waters, forests, farmlands, grasslands, and deserts”. Thees tablishment of a sustainable national economy and ecological civilization is a major priority for the Guangdong-Hong Kong-Macao Greater Bay Area (GBA). The GBA’s current land development and protection situation is briefly summarized in the study, which also analyzes the issues with ecological protection and restoration in terms of whole-factor chain management, cross-regional cooperation, and target patterns. From the viewpoints of the system view, holistic view, synergy view, and the study makes pertinent recommendations. The study’s goal is to promote the modernization of the GBA so that people and nature can live harmoniously.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Qinghai-Tibet Plateau is important ecological security barrier of China and even Asia, and one of biodiversity conservation hotspots. Ensuring ecological security and protecting biodiversity are key tasks of ecological protection in Qinghai-Tibet Plateau. In Qinghai-Tibet Plateau, wildlife is very rich but there are many threatened species. During past 15 years, ecosystem pattern is stable, and ecosystem quality generally elevates in Qinghai-Tibet Plateau. Correspondingly, water retention, soil retention, and sandstorm prevention are improved and the trend of ecological degradation is suppressed. The construction of natural reserves and the implementation of ecological protection projects in Qinghai-Tibet Plateau contribute to the improvement of ecological security barrier function. However, due to the impacts of warm-wet tendency and human activities, Qinghai-Tibet Plateau is facing a series of ecological degradation risks, including frozen soil area withering, marsh reduction, wildlife habitat degradation, alien invasion, and ecosystem degradation. To further protect Qinghai-Tibet Plateau’s ecological security barrier, the following measures could be taken, namely, optimizing spatial pattern of natural protected area, establishing natural protected area system mainly based on national park group, and implementing ecological protection and restoration projects.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Uneven progresses have been widely detected among goals or regions in global sustainable development, which are ascribed to the heterogeneous resource and environmental conditions and trade-offs among goals. In-depth understanding and efforts to reduce such uneven progresses are essential for the holistic achievement of the sustainable development goals (SDGs). This study discusses how bBig Earth Data supports the assessment of the even development among targets and regions by pointing out its advantages in providing high-frequency and more timely data products with higher spatial resolution for the currently poorly achieved SDGs regarding essential human needs and environmental protection. Moreover, the Big Earth Data brings deeper insights into the pattern and cause of the uneven development and disentangles the core issues that restrict the holistic achievement of SDGs.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： The Yangtze River Delta region is an important commodity grain production area in China, but has been suffering from agricultural non-point source pollution issues in recent years. This study puts forward a suggestion on promoting the construction of zero direct discharge (ZDD) engineering for agricultural wastewater from paddy fields in the region. This suggestion is based on the field investigation, policy analysis, engineering design, and economical evaluation, which clarifies the policy adaptability and the construction importance of the ZDD engineering. At the same time, this suggestion shows the basic principles, design requirements, mode selections, investment cost, and expected ecological economic benefits of the ZDD engineering. It is expected to provide decision support for China to mitigate the non-point source pollution and enhance agricultural green development.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： The coupled Human-Natural System thinking is considered as an important theoretical basis for territorial ecological restoration. The relationships between ecological space, production space, and living space show three evolution stages in territorial governance: coordinated arrangement, systematic governance, and human-nature harmony. In this regard, coupled Human-Natural System research is necessary to set the perspectives of coupling indicators, coupling hierarchies, coupling effects and coupling models to identify the primary evaluation indicators, delineate hierarchical nested regions, decouple the spatio-temporal relationship of social#2;ecological effects, and develop human-natural coupling models, so as to systematically support the territorial ecological restoration and facilitate the national and regional high-quality development.
Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Since the foundation of Chinese Loess Plateau Research and Observation Station for Earth Critical Zone and Terrestrial Surface Flux (CLP-CZO), CLP-CZO has been committing itself to serving the frontier critical zone science and regional or national policy needs. During the past decades, the research station has made several important advancements, including loess stratigraphy, paleo-environment evolution, ecosystem processes and services, soil and water conservation and policy advices for the Chinese Loess Plateau and the Yellow River. For its excellent research and policy services, the research station has been awarded two times of China National Natural Science Award and one time of Outstanding Scientific and Technological Achievement Award of the Chinese Academy of Sciences. Up to now, the research station has published more than 300 peer-reviewed high quality papers. The significant science and policy advisory achievements include: (1) high quality and comprehensive loess and paleo-monsoon research, which has uncovered the internal relationships between loess-paleosol stratigraphy and paleo-climate and paleo-environment evolution and built the original theory of Paleo-monsoon Controlled Environment Evolution, and which has made the Chinese Quaternary paleo-climate research leading the world; (2) systematic research of land use patterns, ecosystem processes and services of the Chinese Loess Plateau, which has uncovered the interactive mechanisms of land use patterns and ecosystem processes and services in the area and put forward the parameter system and framework of the critical zone classification of the Chinese Loess Plateau for sustainable development; (3) systematic research of multiscale soil and water processes and conservation and its responses to large vegetation and engineering rehabilitation measures on the Chinese Loess Plateau, which has uncovered the complex relationships between soil moisture and regional climate, soil and vegetation and quantitatively evaluated the environment benefits and tradeoffs of large vegetation and engineering rehabilitation measures; (4) continuously providing advisory reports to the central government, the state council, state leaders and local government departments, which has provided strong science support for the decision-makers for the ecological rehabilitation and sustainable economic and social development of the Chinese loess Plateau and the Yellow River.
Subjects: Geosciences >> Geography submitted time 2020-01-06 Cooperative journals: 《干旱区地理》
Abstract：基于遥感调查数据集定量分析了1990—2015年中国黄土高原地区耕地的时空变化特征和口粮绝对安全最小耕地保障面积的数量变化。结果表明：黄土高原耕地面积从1990年的192 529.65 km2至2015年的182 688.50 km2，净减少了9 841.14 km2，幅度达5.11%，其中2000—2010年的减幅最大，净减少8 483.00 km2；较大的耕地动态变化图斑主要分布于中部和西部区域，细碎的变化图斑广泛分布；耕地地类转出面积（31 875.82 km2）大于转入面积（21 815.25 km2），耕地面积的增加主要由草地和林地转化而来，主要分布在灌溉农业区和东南部平原区，减少的耕地主要转化为草地和林地，主要分布在中部沟壑区的雨养农业区。此外，该时期耕地转化为建筑用地和交通用地等人工表面的面积逐渐增加，主要分布在东南部低海拔平原地区；黄土高原口粮绝对安全所需最小耕地保障面积呈明显减少特征（从1990年的70 913.37 km2下降到2015年的33 981.64 km2），占该区耕地总面积比例呈明显缩减态势（从1990年的36.83%缩减到2015年的18.60%），目前耕地总量的净减少未对口粮绝对安全的耕地保障数量造成大的影响。
Subjects: Other Disciplines >> Synthetic discipline submitted time 2017-02-10 Cooperative journals: 《中国科学院院刊》
Abstract：
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