Resources Environment and Sustainability最新文献_第7页

Will China’s territorial spatial planning policies enhance land use sustainability? An integrated assessment under global environmental change 中国的国土空间规划政策能否提高土地利用的可持续性？全球环境变化下的综合评价

IF 12.4 Q1 ENVIRONMENTAL SCIENCES

Resources Environment and Sustainability

Pub Date : 2025-04-19 DOI: 10.1016/j.resenv.2025.100228

Jinhui Xiong , Wenze Yue , Haoxuan Xia , Tianyu Wang , Yong Liu , Bryan C. Pijanowski

Land use sustainability (LUS) has exhibited profound impacts on addressing global change and achieving sustainable development. Although numerous policies have been implemented to improve LUS, their effectiveness remains unclear. This study builds an integrated assessment to model LUS dynamics in China for 2035 under nine scenarios, combining Shared Socio-economic Pathways (SSPs), Representative Concentration Pathways (RCPs), and three land use policy-oriented scenarios: Business As Usual (BAU), Biodiversity and Agricultural Adaptation (BAA), and Chinese Territorial Spatial Planning (TSP). Using the global change analysis model and future land use simulation model, we quantify changes and interactions among Ecological Sustainability (ES), Production Sustainability (PS), and Living Sustainability (LS). Under BAU, ES declines are predominant – with improvements observed in only 5 provinces under SSP126 and SSP245, and 3 provinces under SSP460 – while significant trade-offs emerge between ES-PS and PS-LS, with modest ES-LS synergy. In contrast, BAA outperforms enhancing average LUS, while TSP yields the most optimal outcomes. Specifically, under SSP126-TSP, up to 22 provinces show highest ES and LS, and PS peaks in 24 provinces. Meanwhile, Pearson correlation coefficient between ES-LS synergy reaches 0.46 under SSP126-TSP. Overall, TSP markedly reduces trade-offs and fosters synergies across all dimensions. These findings highlight TSP’s critical role in sustainable land use and provide actionable insights for policymaking to achieve sustainable development goals in China and globally.

土地利用可持续性对应对全球变化和实现可持续发展具有深远的影响。虽然已经实施了许多政策来改善LUS，但其有效性仍不清楚。本研究结合共享社会经济路径（ssp）、代表性集中化路径（rcp），以及以土地利用政策为导向的“一切照老”（BAU）、“生物多样性与农业适应”（BAA）和“中国国土空间规划”（TSP）三种情景，构建了2035年中国土地利用动态的综合评估模型。利用全球变化分析模型和未来土地利用模拟模型，量化了生态可持续性（ES）、生产可持续性（PS）和生活可持续性（LS）之间的变化及其相互作用。在BAU下，ES的下降占主导地位——在SSP126和SSP245下只有5个省有所改善，在SSP460下有3个省有所改善——而ES- ps和PS-LS之间出现了显著的权衡，ES- ls之间存在适度的协同效应。相比之下，BAA优于增强平均LUS，而TSP产生最优结果。其中，在SSP126-TSP下，ES和LS最高的省份有22个，PS最高的省份有24个。同时，在SSP126-TSP下，ES-LS协同效应的Pearson相关系数达到0.46。总体而言，TSP显著减少了权衡，促进了各方面的协同效应。这些发现突出了TSP在可持续土地利用中的关键作用，并为政策制定提供了可行的见解，以实现中国和全球的可持续发展目标。

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引用次数: 0

Soil phosphorus deficits and trade exacerbate African food shortage 土壤缺磷和贸易加剧了非洲的粮食短缺

IF 12.4 Q1 ENVIRONMENTAL SCIENCES

Resources Environment and Sustainability

Pub Date : 2025-04-19 DOI: 10.1016/j.resenv.2025.100230

Zengwei Yuan , Hanwei Tian , Shujie Xu , Xin Liu , Olawale Olayide , Lianying Li , Andrey Zaytsev , Dmitry Rodionov

Phosphorus (P) is a critical nutrient for food production and population growth, particularly in regions with malnutrition such as Africa. This study estimated P flows across 53 countries in Africa from 2000 to 2020, aiming to understand the historical impacts of P on the African food system. Africa is endowed with substantial P resources, having extracted 125 Mt of P from phosphate rocks between 2000 and 2020, with Morocco accounting for 64% of this total. Despite 79 Mt of P in Africa being exported in terms of either rocks or fertilizers, only 3% of P produced within Africa was traded between African countries during this period. Additionally, 12 Mt of P were utilized for agricultural production. Intensive agricultural practices and inadequate P chemical fertilizer inputs have exacerbated soil P depletion in agricultural land in some African countries, especially Ethiopia. Nearly 20% of the food P is imported from other continents, which indicates a supply-chain P trade tendency of exporting from Africa as low-value rocks and then importing as downstream high-value food. Scenario analyses for the year 2050 suggest that while P demand can be decreased 492 kt through a combination of reducing food loss fraction and improving diet management, only increasing fertilizer P input could eliminate the African future P demand. Therefore, this study highlights the need for closer cooperation among African countries to improve local use of P resources and eliminate hunger within the continent.

磷(P)是粮食生产和人口增长的关键营养素，特别是在非洲等营养不良地区。本研究估算了2000年至2020年非洲53个国家的磷流量，旨在了解磷对非洲粮食系统的历史影响。非洲拥有丰富的磷资源，在2000年至2020年期间，从磷矿中提取了1.25亿吨磷，其中摩洛哥占64%。尽管非洲有7900万吨磷肥以岩石或化肥的形式出口，但在此期间，非洲国家之间只有3%的磷肥在非洲生产。另外，有1200万吨磷肥被用于农业生产。在一些非洲国家，特别是埃塞俄比亚，集约化农业实践和磷化肥投入不足加剧了农业用地土壤磷的耗竭。近20%的粮食P是从其他大陆进口的，这表明供应链P贸易的趋势是从非洲作为低价值岩石出口，然后作为下游高价值食品进口。2050年情景分析表明，虽然通过降低粮食损失比例和改善饮食管理相结合可以减少492kt的磷需求，但只有增加肥料磷投入才能消除非洲未来的磷需求。因此，本研究强调非洲国家之间需要更密切的合作，以改善当地对磷资源的利用，消除非洲大陆的饥饿。

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引用次数: 0

Widening inequality: Diverging trends in CO2 and air pollutant emissions across Chinese cities 日益扩大的不平等：中国城市二氧化碳和空气污染物排放的不同趋势

IF 12.4 Q1 ENVIRONMENTAL SCIENCES

Resources Environment and Sustainability

Pub Date : 2025-04-17 DOI: 10.1016/j.resenv.2025.100227

Shuangzhi Li , Xiaoling Zhang , Zhongci Deng , Kang Liu , Jing Wang , Jin Fan

Chinese cities face escalating tensions between pollution mitigation and economic equity. Using an environmentally extended multi-regional input–output (EE-MRIO) model, we quantified the carbon and air pollutant footprints of 309 cities from 2012 to 2017 and applied structural decomposition analysis (SDA) to identify key emission drivers. The results indicate that inequality in air pollutant emissions, with a Gini coefficient of 0.31–0.53, is significantly higher than that of CO₂ (0.33–0.41). Developed cities generate 3.1 times more economic output per unit of CO₂ emissions than less developed cities, with the disparity widening over time. While intermediate input optimization contributed to a 1.94 Gt reduction in CO₂ emissions, its benefits were largely concentrated in developed regions and were accompanied by increased emissions of PM

_{2.5}

, BC, OC, and CO. Although reductions in emission intensity played a crucial role in mitigating pollutants, they paradoxically contributed to CO₂ growth in energy-intensive cities. Additionally, population growth and per capita final demand were the primary drivers of emission increases, and population growth had a greater impact on developed regions. These findings underscore the need for regionally differentiated policies, including carbon quota reallocation, industrial transformation in energy-dependent cities, and the promotion of green industries in less developed areas, to achieve a balance between environmental sustainability and economic development.

中国城市面临着污染缓解与经济公平之间日益紧张的局面。采用环境扩展的多区域投入产出（EE-MRIO）模型，对2012 - 2017年309个城市的碳足迹和空气污染物足迹进行量化，并应用结构分解分析（SDA）识别关键排放驱动因素。结果表明，大气污染物排放不平等的基尼系数为0.31 ~ 0.53，显著高于二氧化碳排放不平等的基尼系数（0.33 ~ 0.41）。发达城市每单位二氧化碳排放产生的经济产出是欠发达城市的3.1倍，而且差距随着时间的推移而扩大。虽然中间投入优化减少了1.94 Gt的二氧化碳排放量，但其效益主要集中在发达地区，并伴随着PM2.5、BC、OC和CO排放量的增加。尽管排放强度的降低在缓解污染物排放方面发挥了关键作用，但它们却矛盾地促进了能源密集型城市的二氧化碳排放量增长。此外，人口增长和人均最终需求是排放增加的主要驱动因素，人口增长对发达地区的影响更大。这些研究结果强调需要采取区域差别化政策，包括碳配额再分配、能源依赖型城市的产业转型和促进欠发达地区的绿色产业，以实现环境可持续性和经济发展之间的平衡。

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引用次数: 0

Characteristics and influencing factors of livestock residue nitrogen, phosphorus, and organic matter discharge and spatial distribution of pollution potential: Case study in the Yellow River Delta, China 畜禽粪便氮、磷、有机质排放特征、影响因素及污染潜力空间分布——以黄河三角洲地区为例

IF 12.4 Q1 ENVIRONMENTAL SCIENCES

Resources Environment and Sustainability

Pub Date : 2025-04-11 DOI: 10.1016/j.resenv.2025.100225

Hong-tao Liu , Jia-yi Hou , Min Deng , Zhi-gang Sun

The Yellow River Delta, characterized by intense land-sea interactions, has a highly sensitive and fragile environment. Livestock residue, transported through runoff and infiltration, exacerbates soil and water contamination, posing a threat to offshore waters. Thus, mitigating the environmental risks associated with livestock residue in the delta is urgent. This study integrated field measurements and model analysis to provide new insights into livestock residue pollution control. It examined discharge characteristics in soil and aquatic environments and assessed the spatial distribution of pollution potential. In the Yellow River Delta, total nitrogen and total phosphorus levels in livestock residue exceeded the Ministry of Ecology and Environment’s limits by 3–6 times and 7.2 times, respectively. Large-scale breeding primarily reduced pollutant loads by increasing flushing. Shortening the distance between farms and rivers, along with adopting wet cleaning methods, mitigated nitrogen, phosphorus, and organic matter pollution risks. Compared to anaerobic digestion, aerobic composting reduced pollutant levels in manure but increased organic matter in slurry. Soil pollution was severe near farms, with total nitrogen and organic matter concentrations 2.0 and 2.1 times higher than those along the vertical transect from farms to rivers, while water pollution was relatively benign. High-risk non-point source pollution areas were concentrated in the northwest and south of the Yellow River Delta. Even low-risk waterways, such as the Yellow River and Xianxian Ditch, posed potential threats to the Bohai Sea. Optimizing breeding scale, flushing intensity, manure cleaning and treatment methods, and farm-river distances can effectively reduce pollution risks.

黄河三角洲具有海陆相互作用强烈的特点，是一个高度敏感和脆弱的环境。牲畜残留物通过径流和渗透运输，加剧了土壤和水污染，对近海水域构成威胁。因此，减轻与三角洲牲畜残留物相关的环境风险迫在眉睫。本研究将现场测量与模型分析相结合，为畜禽粪便污染控制提供新的见解。它审查了土壤和水生环境的排放特征，并评估了污染潜力的空间分布。黄河三角洲地区畜禽粪便中总氮和总磷含量分别超过生态环境部规定的3-6倍和7.2倍。大规模养殖主要通过增加冲洗来减少污染物负荷。缩短农场和河流之间的距离，以及采用湿式清洁方法，减轻了氮、磷和有机物污染的风险。与厌氧消化相比，好氧堆肥降低了粪肥中的污染物水平，但增加了泥浆中的有机物含量。农田附近土壤污染严重，总氮和有机质浓度分别是农田至河流垂直样带土壤污染的2.0和2.1倍，而水体污染相对较好。非点源污染高发区主要集中在黄河三角洲西北部和南部。即使是低风险的水道，如黄河和仙仙沟，也对渤海构成潜在威胁。优化养殖规模、冲洗强度、粪便清洗和处理方法以及农场与河流的距离可以有效降低污染风险。

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引用次数: 0

Deep dive into the global primary plastic trade over the past thirty-five years and its policy implications 深入研究过去35年的全球初级塑料贸易及其政策影响

IF 12.4 Q1 ENVIRONMENTAL SCIENCES

Resources Environment and Sustainability

Pub Date : 2025-04-11 DOI: 10.1016/j.resenv.2025.100226

Xinlai Tan , Hongyan Zou , Zhong-Liang Wang , Jing Shui , Yidong Wang , Chang-Er Chen , Danyang Li , Dongmei Xue , Meng Hu , Zhanyun Wang

Since China’s import ban, there has been a stimulated global interest in the international trade of plastic wastes, but with a limited focus on the impact of such downstream events on the trade of primary plastics. Thus, this study focuses on analyzing the global trade of primary plastics from 1988 to 2022 to understand the effects of different events on the trade and offer policy implications. Specifically, we reconstruct relevant trade data from the UN Comtrade database using a rigorous method to handle data reporting issues in the database. The results show that the cumulative global trade of primary plastics reached 3,411 megatonnes over the past 35 years. The global trade boosted after 2017 as a result of China’s increasing import to mitigate the raw material shortages brought by its import ban of plastic wastes. A first negative growth of the global primary plastic trade in a decade showed up in 2022 due to China’s shrinking demand. This study also offers a detailed analysis about the current policy landscape, urgently calling for a well-designed policy framework aiming at sustainability throughout the entire plastic life cycle.

自中国的进口禁令以来，全球对塑料废物的国际贸易产生了兴趣，但对此类下游事件对初级塑料贸易的影响的关注有限。因此，本研究的重点是分析1988年至2022年全球初级塑料贸易，以了解不同事件对贸易的影响，并提供政策启示。具体而言，我们使用严格的方法来处理数据库中的数据报告问题，从联合国商品贸易数据库中重建相关贸易数据。结果显示，在过去的35年里，全球初级塑料的累计贸易额达到了3411亿吨。2017年之后，由于中国增加进口以缓解塑料废物进口禁令带来的原材料短缺，全球贸易得到了提振。由于中国需求萎缩，2022年全球初级塑料贸易出现了十年来的首次负增长。本研究还对当前的政策格局进行了详细的分析，迫切需要一个精心设计的政策框架，旨在实现整个塑料生命周期的可持续性。

{"title":"Deep dive into the global primary plastic trade over the past thirty-five years and its policy implications","authors":"Xinlai Tan , Hongyan Zou , Zhong-Liang Wang , Jing Shui , Yidong Wang , Chang-Er Chen , Danyang Li , Dongmei Xue , Meng Hu , Zhanyun Wang","doi":"10.1016/j.resenv.2025.100226","DOIUrl":"10.1016/j.resenv.2025.100226","url":null,"abstract":"<div><div>Since China’s import ban, there has been a stimulated global interest in the international trade of plastic wastes, but with a limited focus on the impact of such downstream events on the trade of primary plastics. Thus, this study focuses on analyzing the global trade of primary plastics from 1988 to 2022 to understand the effects of different events on the trade and offer policy implications. Specifically, we reconstruct relevant trade data from the UN Comtrade database using a rigorous method to handle data reporting issues in the database. The results show that the cumulative global trade of primary plastics reached 3,411 megatonnes over the past 35 years. The global trade boosted after 2017 as a result of China’s increasing import to mitigate the raw material shortages brought by its import ban of plastic wastes. A first negative growth of the global primary plastic trade in a decade showed up in 2022 due to China’s shrinking demand. This study also offers a detailed analysis about the current policy landscape, urgently calling for a well-designed policy framework aiming at sustainability throughout the entire plastic life cycle.</div></div>","PeriodicalId":34479,"journal":{"name":"Resources Environment and Sustainability","volume":"21 ","pages":"Article 100226"},"PeriodicalIF":12.4,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Can the Resource Nexus guide improvements in urban planetary health? Insights from a literature review 资源联系能否指导城市地球健康的改善？来自文献综述的见解

IF 12.4 Q1 ENVIRONMENTAL SCIENCES

Resources Environment and Sustainability

Pub Date : 2025-04-10 DOI: 10.1016/j.resenv.2025.100224

Rayyan Sulieman , Martina Artmann , Daniel Karthe , Martin Behnisch

Since 2007, cities have accommodated more than half of the global population. Their growth has led to significant environmental modifications and at least some degradation of the natural environment, with significant consumption of imported resources, waste generation and pollutant emissions. This on the one hand leads to a special importance of cities for planetary health, and on the other hand underlines the necessity of integrated approaches in environmental resources management for improving urban planetary health. However, the role of integrative approaches, such as the Resource Nexus, in urban planetary health remains insufficiently explored. This study addresses this gap by conducting a semi-systematic literature review, following the PRISMA guidelines to select and document the current state of knowledge on urban planetary health and the role of the Resource Nexus approach for sustainability transformations in this context. Based on 57 papers, a qualitative text analysis was conducted through the lens of the Resource Nexus framework. It was found that all key environmental resources are covered regarding their role for urban planetary health, with climate, food, biota, land, and water identified as the most critical elements for enhancing planetary health. Moreover, the analysed literature shows that despite the many challenges, urban areas offer a multitude of opportunities for societal, political, and economic interventions that can benefit environmental and human health. Maximizing synergies and minimizing trade-offs requires addressing both challenges and opportunities. This often involves making multiple changes at both the urban societal and governance levels. These changes create a systemic shift, moving away from prioritizing economic prosperity and towards a focus on planetary health.

自2007年以来，城市容纳了全球一半以上的人口。它们的增长导致了重大的环境变化，至少在一定程度上使自然环境退化，大量消耗进口资源，产生废物和排放污染物。这一方面使城市对地球健康具有特别的重要性，另一方面强调了在环境资源管理方面采取综合办法以改善城市地球健康的必要性。然而，诸如资源联系等综合办法在城市地球健康方面的作用仍未得到充分探索。本研究通过进行半系统的文献综述来解决这一差距，遵循PRISMA指南，选择和记录关于城市地球健康的知识现状以及资源联系方法在这一背景下对可持续性转型的作用。以57篇论文为基础，通过资源关联框架进行定性文本分析。研究发现，所有关键的环境资源都涉及到它们对城市地球健康的作用，其中气候、食物、生物群、土地和水被确定为增强地球健康的最关键因素。此外，经分析的文献表明，尽管存在许多挑战，但城市地区为有利于环境和人类健康的社会、政治和经济干预提供了大量机会。最大化协同效应和最小化权衡需要同时应对挑战和机遇。这通常涉及在城市、社会和治理层面进行多重变革。这些变化造成了系统性的转变，从优先考虑经济繁荣转向关注地球健康。

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引用次数: 0

Food trade of China saved global land but increased water appropriation and carbon emissions from 2010 to 2020 2010 - 2020年，中国粮食贸易在节约全球土地的同时，增加了水资源占用和碳排放

IF 12.4 Q1 ENVIRONMENTAL SCIENCES

Resources Environment and Sustainability

Pub Date : 2025-04-08 DOI: 10.1016/j.resenv.2025.100222

Meng Li , Huijun Wu , Hongrong Huang , Jie Gao , Pute Wu , La Zhuo

Global food trade has been growing and diverse with environmental burden shifting across the trade bilateral partners. However, the temporal evolution of the environmental impacts and resources degradations embedded in food trade remains unclear for the recent decades. This study analyzes China’s food supply and trade relationships of 71 food items with 174 countries and territories from 2010 to 2020, examining the associated water, land, carbon footprint (WF, LF and CF) based on the bottom-up method, as well as the corresponding virtual water, land, carbon flows and resources saving. Results show that WF and LF of Chinese food consumption increased while CF decreased over the period. National net virtual water, land and carbon imports more than doubled, mainly due to the import of legumes and nuts from Latin America. Trade conserved 56.6 Mha/yr of land but consumed 30 Gm³/yr of water and raised net carbon emissions by 56 Mt/yr in 2020. This analysis shows a crucial view on the non-negligible role of a certain country’s food trade network changes on global environmental degradations though worldwide food productivity improvements.

随着环境负担在贸易双边伙伴之间的转移，全球食品贸易一直在增长和多样化。然而，近几十年来，食品贸易中环境影响和资源退化的时间演变仍不清楚。本研究分析了2010 - 2020年中国与174个国家和地区的71种食品供应和贸易关系，基于自下而上的方法考察了相关的水、土地、碳足迹（WF、LF和CF），以及相应的虚拟水、土地、碳流和资源节约。结果表明，中国食品消费的WF和LF呈上升趋势，CF呈下降趋势。国家净虚拟水、土地和碳进口量增加了一倍以上，主要是由于从拉丁美洲进口豆类和坚果。贸易节约了56.6万公顷/年的土地，但消耗了30亿立方米/年的水，并在2020年将净碳排放量提高了5600万吨/年。这一分析显示了一个至关重要的观点，即一个国家的粮食贸易网络的变化对全球环境退化的不可忽视的作用，尽管世界范围内的粮食生产力的提高。

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引用次数: 0

Assessing carbon storage dynamics in an ecological civilization demonstration zone amid rapid urbanization: A multi-scenario study of Guizhou Province, China 快速城市化背景下生态文明示范区碳储量动态评估——以贵州省为例

IF 12.4 Q1 ENVIRONMENTAL SCIENCES

Resources Environment and Sustainability

Pub Date : 2025-04-08 DOI: 10.1016/j.resenv.2025.100223

Rui Chen , Xuehai Fei , Jingyu Zhu , Weiduo Chen , Haiqiang Du , Yingqian Huang , Yi Shen , Yong Zhang , Aping Niu , Peng Xu

Effective management of terrestrial ecosystems is crucial for mitigating climate change, especially in regions like Guizhou Province, where significant carbon sequestration potential is challenged by urbanization and ecological initiatives. This study simulates the spatiotemporal dynamics of carbon storage in Guizhou under multiple land use and land cover (LULC) scenarios and explores their ecological and economic impacts. Specifically, LULC and ecosystem service data were applied to assess carbon storage and habitat quality from 1990 to 2020. LULC projections from 2030 to 2060, incorporating habitat quality constraints, were generated to assess carbon storage and its economic value. The results show that Guizhou’s carbon storage increased from 3423.13 Tg to 3475.42 Tg, with forest restoration increasing it by 301.62 Tg and agricultural expansion reducing it by 218.63 Tg. Projections indicate continued growth under the current trend, with 125.19 Tg of carbon sequestration valued at 11.29 billion Chinese Yuan by 2060. Ecological initiatives could accelerate these benefits, while urban expansion may limit them. Carbon storage in different sequences of development scenarios was similar, suggesting that later development strategies can partially offset earlier differences resulting from varying priorities. Nevertheless, it remains essential to consider the sequence effects on other ecosystem services and socioeconomic factors. These findings highlight the importance of ecological engineering and reveal the flexibility in balancing ecological goals with urban development, providing guidance for long-term integrated planning to achieve sustainable development. This study provides a methodological basis for carbon storage research, supporting regional land management practices in the context of carbon neutrality.

陆地生态系统的有效管理对于减缓气候变化至关重要，特别是在像贵州省这样的地区，在那里，巨大的碳封存潜力受到城市化和生态举措的挑战。本文模拟了贵州省多种土地利用/土地覆盖情景下碳储量的时空动态变化，并探讨了不同土地利用/土地覆盖情景对生态和经济的影响。具体而言，利用1990 - 2020年LULC和生态系统服务数据对碳储量和栖息地质量进行了评估。在纳入栖息地质量约束的情况下，生成了2030年至2060年的LULC预测，以评估碳储量及其经济价值。结果表明：贵州省碳储量从3423.13 Tg增加到3475.42 Tg，其中森林恢复增加了301.62 Tg，农业扩张减少了218.63 Tg；预测显示，在目前的趋势下，碳汇将继续增长，到2060年，碳汇将达到125.19 Tg，价值112.9亿元人民币。生态倡议可以加速这些好处，而城市扩张可能会限制它们。不同发展情景序列的碳储量相似，这表明后来的发展战略可以部分抵消由于优先顺序不同而导致的早期差异。然而，仍有必要考虑序列对其他生态系统服务和社会经济因素的影响。这些发现突出了生态工程的重要性，揭示了平衡生态目标与城市发展的灵活性，为实现可持续发展的长期综合规划提供了指导。本研究为碳储量研究提供了方法论基础，为碳中和背景下的区域土地管理实践提供了支持。

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引用次数: 0

Scale-dependent effects of tree species diversity on soil erosion resistance 树种多样性对土壤侵蚀抗性的尺度依赖效应

IF 12.4 Q1 ENVIRONMENTAL SCIENCES

Resources Environment and Sustainability

Pub Date : 2025-04-07 DOI: 10.1016/j.resenv.2025.100221

Huaqing Liu, Xiaodong Gao, Xining Zhao

Globally, vegetation establishment is an important approach for controlling soil erosion, which induces land degradation. However, the understanding of the effects of tree species diversity on soil erodibility across spatial scales remains incomplete. This study employed the Universal Soil Loss Equation model to quantify soil erodibility and aligned it with tree species diversity data obtained from the Global Forest Biodiversity Initiative database. Our findings revealed a global decrease in soil erodibility with increases in tree species diversity, though this relationship varies among biomes and ecoregions. Specifically, soil erodibility decreased with increasing tree species diversity in 6 of the 11 biomes and 54.90% of the ecoregions analyzed. Comprehensive analyses revealed that increased productivity, NDVI, and basal area mediated this reduction in erodibility across both groups. In ecoregions where tree species diversity was negatively correlated with soil erodibility, lower precipitation during the driest month and quarter, higher precipitation seasonality, lower silt content, and higher elevation were observed compared with those of the ecoregions with positive correlations between tree species diversity and soil erodibility. Among ecoregions characterized by clay content > 18.3% and silt content < 40%, 79.55% exhibited a reduction in soil erodibility as tree species diversity increased. These findings highlight the inherent spatial variability and mechanistic complexity of biodiversity-soil erodibility relationships, underscoring the need for targeted, soil-specific restoration strategies.

在全球范围内，植被建设是控制土壤侵蚀的重要途径。然而，树种多样性对土壤可蚀性的影响在空间尺度上的认识仍然不完整。本研究采用通用土壤流失方程模型量化土壤可蚀性，并将其与全球森林生物多样性倡议数据库中获得的树种多样性数据进行比对。我们的研究结果表明，全球土壤可蚀性随着树种多样性的增加而降低，尽管这种关系在生物群系和生态区之间有所不同。在11个生物群系中，有6个群落和54.90%的生态区，土壤可蚀性随树种多样性的增加而降低。综合分析显示，生产力、NDVI和基础面积的增加介导了两组可蚀性的降低。在树木多样性与土壤可蚀性呈负相关的生态区，与树木多样性与土壤可蚀性呈正相关的生态区相比，树木多样性与土壤可蚀性呈负相关的生态区在最干旱月份和季度降水较少、降水季节性较强、粉砂含量较低、海拔较高。在以粘土含量为特征的生态区域中18.3%，含粉量<；随着树种多样性的增加，土壤可蚀性降低的比例分别为40%和79.55%。这些发现强调了生物多样性-土壤可蚀性关系固有的空间变异性和机制复杂性，强调了有针对性的土壤修复策略的必要性。

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引用次数: 0

Graph-based machine learning for high-resolution assessment of pedestrian-weighted exposure to air pollution 基于图形的机器学习，用于行人加权空气污染暴露的高分辨率评估

IF 12.4 Q1 ENVIRONMENTAL SCIENCES

Resources Environment and Sustainability

Pub Date : 2025-04-01 DOI: 10.1016/j.resenv.2025.100219

Feifeng Jiang , Jun Ma

Pedestrians are particularly vulnerable to air pollution due to their proximity to pollutant sources and elevated respiratory rates during physical activity, amplifying cumulative health risks. However, existing studies focus on concentration- or residence-based exposure assessment, overlooking the dynamic interaction between pollution patterns and pedestrian activity. This study therefore introduces a novel methodological framework to assess pedestrian-specific exposure to PM2.5 in diverse urban environments. Applied to New York City, the framework leverages graph-based machine learning to predict street-level PM2.5 concentrations from vehicle-sensed pollution data, while estimating high-resolution pedestrian volume derived from street view imagery and ground-truth count data. The results reveal significant divergences between traditional exposure assessments and pedestrian-specific exposure patterns, uncovering previously overlooked high-risk zones. High-exposure hotspots are not limited to areas with elevated pollution levels but also include locations where moderate pollution coincides with high pedestrian activity. This study also explores the spatial relationship between exposure patterns and urban vegetation coverage, providing actionable insights for targeted interventions. By bridging the gap between pollution dynamics and pedestrian activity, this research provides urban planners and policymakers with new insights for developing pedestrian-centered air quality management strategies, contributing to healthier and more sustainable urban environments.

行人特别容易受到空气污染的影响，因为他们靠近污染源，而且在身体活动期间呼吸频率升高，从而加大了累积的健康风险。然而，现有的研究侧重于以浓度或居住地为基础的暴露评估，忽视了污染模式与行人活动之间的动态相互作用。因此，本研究引入了一种新的方法框架来评估不同城市环境中行人对PM2.5的特定暴露。该框架应用于纽约市，利用基于图形的机器学习，从车辆感知的污染数据中预测街道PM2.5浓度，同时从街景图像和地面真实计数数据中估计高分辨率行人量。结果揭示了传统暴露评估和行人特定暴露模式之间的显著差异，揭示了以前被忽视的高风险区域。高暴露热点不仅限于污染水平高的地区，还包括中度污染与行人活动频繁的地区。本研究还探讨了暴露模式与城市植被覆盖之间的空间关系，为有针对性的干预措施提供了可操作的见解。通过弥合污染动态和行人活动之间的差距，本研究为城市规划者和决策者提供了新的见解，以制定以行人为中心的空气质量管理策略，为更健康、更可持续的城市环境做出贡献。

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