Spatial heterogeneity and driving mechanisms of carbon storage in the urban agglomeration within complex terrain: Multi-scale analyses under localized SSP-RCP narratives

Sustainable Cities and Society, Journal Year: 2024, Volume and Issue: 109, P. 105520 - 105520

Published: May 23, 2024

Language: Английский

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Estimating terrestrial ecosystem carbon storage change in YREB caused by land-use change under SSP-RCPs scenarios

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 469, P. 143205 - 143205

Published: July 20, 2024

Language: Английский

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Maintaining key ecosystem services under multiple development scenarios: A case study in Guangdong–Hong Kong–Macao greater bay Area, China

Ecological Indicators, Journal Year: 2023, Volume and Issue: 154, P. 110691 - 110691

Published: July 21, 2023

Effective land use management can better maintain ecosystem services, especially in urban agglomerations. However, rational scale systems and landscape patterns to key services (ESs) highly urbanized areas remain poorly understood. Taking the Guangdong–Hong Kong–Macao Greater Bay Area (GBA) as a study area, we quantified spatio-temporal change of ESs from 2000 2020 by Integrated Valuation Environmental Services Tradeoffs (InVEST) model, simulated prior considering ES conservation priority under different multiple development scenarios 2050 adopting future simulation (FLUS) model. The main findings were follows: (1) From 2020, natural habitat, water retention carbon sequestration decreased 5.5%, 7.9%, 3.9%, respectively, while soil increased 63.7%. (2) proportion ranged 10.6% 22.6%, which mainly located mountainous region. (3) area would increase 4286.00 km2 4802.25 between GBA, with growth rate 12.05%. Under scenarios, new was distributed megacities supercities. (4) integrative scenario, habitat quality index, conservation, 0.036, 7 × 104 t, 5.11 106 t 0.93 respectively. To ESs, recommend optimizing system, making it compact at city scattered regional scale, strictly restricting conversion forestland farmland adjacent into land. These beneficial achieve high-quality sustainable via system management.

Language: Английский

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Spatial network characteristics of carbon balance in urban agglomerations– a case study in Beijing-Tianjin-Hebei city agglomeration

Applied Geography, Journal Year: 2024, Volume and Issue: 169, P. 103343 - 103343

Published: July 16, 2024

Language: Английский

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The negative impacts of human activities on the ecological corridor in the karst highly urbanized area are gradually diminishing: A case study from the karst mountain cities in Southwest China

Ecological Indicators, Journal Year: 2023, Volume and Issue: 157, P. 111257 - 111257

Published: Nov. 16, 2023

Karst mountain cities are important population agglomerations in southwestern China, as well integral components of the significant regional economic belt - Central Guizhou Economic Belt. Ecological corridors serve crucial pathways for species migration and play a vital role integrating habitats, particularly highly fragmented ecologically vulnerable karst areas. However, it is not yet clear how human activities natural factors drive distribution ecological rapidly expanding urban areas region. In light this, based on multi-source data from 2005 to 2020, this study identified source using sensitivity analysis resistance surface model was adjusted rocky desertification factor. The Minimum Cumulative Resistance (MCR) employed extract each four time periods. Furthermore, space syntax conducted evaluate selection, integration, depth under different levels urbanization. Finally, correlation R language performed determine degree influence various driving corridors. Our findings indicate that during urbanization process, negative impact disturbance corridor urbanized has decreased. And overall development research region shown improvement over past 20 years. extreme climatic conditions have negatively affected Additionally, policy-driven measures will an By exploring spatiotemporal differentiation mechanisms two decades, our provide scientific evidence biodiversity conservation construction secure environments

Language: Английский

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Impact of ecological conservation policies on land use and carbon stock in megacities at different stages of development

Heliyon, Journal Year: 2023, Volume and Issue: 9(8), P. e18814 - e18814

Published: July 30, 2023

Urban expansion, especially the construction of megacities, increases carbon emissions and adversely affects storage terrestrial ecosystems. However, scientific land-use management policies can increase storage. This study takes two megacities at different stages development, Beijing Tianjin, as examples to explore impact ecological conservation scenarios on both urban land use provide recommendations for planning large cities with low-carbon development goal. Furthermore, we coupled patch-generating simulation (PLUS) model integrated valuation ecosystem services tradeoffs (InVEST) simulate under a natural scenario, planned protection scenario (PEPS), policy-based restoration (PERS). From 2000 2020, had degrees expansion loss, Tianjin's dynamic degree was 0.94% higher than Beijing's, loss 183,536.19 Mg Beijing's; this trend reducing reserves will continue (NDS). Under PEPS PERS, stock increases, Tianjin is greater, an 4.51% 8.04%, respectively. most, but negative cities. Beijing's 0.40% lower Tianjin's, which deviates slightly from economic development. Megacities in rapid stage refer strictly following scope vigorously implementing effectively regional stock. mature Beijing, flexibly implement without affecting city's

Language: Английский

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Trend analysis of long-time series habitat quality in Beijing based on multiple models

Frontiers in Environmental Science, Journal Year: 2024, Volume and Issue: 12

Published: July 30, 2024

This study selects Beijing from 1980 to 2020 as the research area, utilizing high temporal resolution land use data analyze through habitat quality module of InVEST model. Unlike previous research, this employs Theil-Sen Median method and Mann-Kendall test trend changes in more accurately. has significant advantages dealing with non-linear non-normally distributed over long time series, providing a accurate reliable analysis trends. Methodologically, first collects organizes type 2020, then uses model process each year, assessing impact different types on quality. Subsequently, are used series quality, identify quantify significance changes. The results show that past 40 years, area construction significantly expanded, leading compression other land. spatial distribution shows clear difference between two sides divided by line connecting northeast southwest, west side being good east poorer. In 10 overall improved, but most areas still decreasing trend, especially western northern mountainous where declined. Based these findings, it is recommended future urban planning management should pay attention protection improvement restoration work for poor

Language: Английский

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Construction and optimization of ecological spatial network in typical mining cities of the Yellow River Basin: the case study of Shenmu City, Shaanxi

Ecological Processes, Journal Year: 2024, Volume and Issue: 13(1)

Published: Aug. 23, 2024

Abstract Background In resource-based cities, long-term irrational exploitation of resources has caused severe damage to ecosystem functions, mainly manifested in the significant decline biodiversity, land degradation, water pollution, and deterioration air quality. This led a cities' sustainable development capabilities. Establishing optimizing an ecological spatial network (ESN) can promote effective transmission material energy enhance which holds fundamental importance ensuring integrity region promoting urban development. this study, by combining environment with landscape determine sources, we constructed ESN Shenmu City, mining city, based on minimum cumulative resistance (MCR) model, conducted correlation analysis between topological structure significance functions. Then, optimization strategy scheme functions was proposed. Finally, robustness used effect before after optimization. Results The results showed that high-value service areas City were predominantly located central western parts, highest value southeast. There strong degree feature vector nodes. Conclusions be optimized effectively adding stepping stone nodes new corridors. Through ESN, found more robust connectivity stability show better recovery ability function damage. research presents method for construction area provides theoretical basis realizing sustainability economy, regional development, protection City.

Language: Английский

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Spatio-Temporal Dynamics of Carbon Storage in Rapidly Urbanizing Shenzhen, China: Insights and Predictions

Land, Journal Year: 2024, Volume and Issue: 13(10), P. 1566 - 1566

Published: Sept. 26, 2024

Rapid urbanization in developing countries leads to significant land-use and land-cover change (LULCC), which contributes increased carbon dioxide (CO2) emissions the degradation of storage. Studying spatio-temporal changes storage is crucial for guiding sustainable urban development toward neutrality. This study integrates machine-learning random forest algorithm, CA–Markov, InVEST models predict distribution Shenzhen, China, under various scenarios. The findings indicate that, over past two decades, Shenzhen has experienced changes. transformation from high- low-carbon-density land uses, particularly conversion forestland construction land, primary cause loss. Forestland mainly influenced by natural factors, such as digital elevation model (DEM) precipitation, while other (LULC) types are predominantly affected socio-economic demographic factors. By 2030, projected vary significantly across different scenarios, with greatest decline expected scenario (NDS) least ecological priority (EPS). RF-CA–Markov outperforms traditional CA–Markov accurately simulating use, small scattered types. Our conclusions can inform future low-carbon city optimization.

Language: Английский

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Balancing on Carbon Storage and Ecological Security in Urban Areas: the Case of Dongguan City, China

Sustainable Futures, Journal Year: 2025, Volume and Issue: unknown, P. 100468 - 100468

Published: Feb. 1, 2025

Language: Английский

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