Matching and coupling coordination between the supply and demand for ecosystem services in Hunan Province, China DOI Creative Commons

Juan Yu,

Liwen Yi,

Binggeng Xie

et al.

Ecological Indicators, Journal Year: 2023, Volume and Issue: 157, P. 111303 - 111303

Published: Nov. 22, 2023

Understanding of the ecosystem services (ESs) supply–demand balance, coupling, and coordination are vital for sustainable development in society. To reveal changing pattern underlying mechanisms matching, ESs, this study, we used InVEST model to quantify supply following three ESs Hunan Province central China from 2000 2018: soil conservation (SC), water yield (WY), carbon retention (CR). Using socioeconomic data, capacity demand food (FS) other were quantitatively evaluated. The Z-score standardized data divide quadrants clarify matching situation. Additionally, elasticity coefficient coupling degree (CCD) evaluate relationship level. Our results indicate following: (1) CR FS increased by 12.67% 19.48%, respectively, while that SC WY decreased 2.57% 22.83%, respectively; SC, WY, CR, 0.329%, 9.43%, 142.05%, 6.23%, respectively. is less than demand, showing a clear contradiction; exceeded demand; both had notable spatial heterogeneity. (2) area high supply–high (HS–HD) supply–low (HS–LD) types decreased, whereas low (LS–LD) (LS–HD) increased. Changsha–Zhuzhou–Xiangtan urban agglomeration (CZX) selected districts northern face shortage ESs. (3) was primarily positive negative. (4) CCD four an unbalanced state demonstrated different trends. This study provides novel insights decision-making regarding optimisation land use Province.

Language: Английский

The control of karst rocky desertification has enhanced the carbon sequestration capacity of the ecosystem in southern China DOI
Chaochao Du, Xiaoyong Bai, Yangbing Li

et al.

Global and Planetary Change, Journal Year: 2024, Volume and Issue: unknown, P. 104602 - 104602

Published: Oct. 1, 2024

Language: Английский

Citations

10
A daily gap-free normalized difference vegetation index dataset from 1981 to 2023 in China DOI Creative Commons
Huiwen Li, Yue Cao, Jingfeng Xiao

et al.

Scientific Data, Journal Year: 2024, Volume and Issue: 11(1)

Published: May 22, 2024

Long-term, daily, and gap-free Normalized Difference Vegetation Index (NDVI) is of great significance for a better Earth system observation. However, gaps contamination are quite severe in current daily NDVI datasets. This study developed 0.05° dataset from 1981-2023 China by combining valid data identification spatiotemporal sequence gap-filling techniques based on the National Oceanic Atmospheric Administration dataset. The generated more than 99.91% area showed an absolute percent bias (|PB|) smaller 1% compared with original data, overall R2 root mean square error (RMSE) 0.79 0.05, respectively. PB RMSE between our MODIS gap-filled (MCD19A3CMG) during 2000 to 2023 7.54% 0.1, three monthly datasets (i.e., GIMMS3g, MOD13C2, SPOT/PROBA) only -5.79%, 4.82%, 2.66%, To best knowledge, this first long-term far.

Language: Английский

Citations

9
The Impacts of Erosion on the Carbon Cycle DOI Creative Commons
Haiyan Zheng, Chiyuan Miao, Chris Huntingford

et al.

Reviews of Geophysics, Journal Year: 2025, Volume and Issue: 63(1)

Published: Jan. 2, 2025

Abstract Physical and chemical erosion associated with water both affect land–atmosphere carbon exchanges. However, previous studies have often addressed these processes separately or used oversimplified mechanisms, leading to ongoing debates uncertainties about erosion‐induced fluxes. We provide an overview of the on‐site uptake fluxes induced by physical (0.05–0.29 Pg C yr −1 , globally) (0.26–0.48 ). Then, we discuss off‐site dynamics (during transport, deposition, burial). Soil organic mineralization during transport is nearly 0.37–1.20 on globe. also summarize overall into estuaries (0.71–1.06 ) identify sources different types within them, most which are land erosion. Current approaches for quantifying physical‐erosion‐induced vertical focus two distinct temporal scales: short‐term (ranging from minutes decades), emphasizing net flux, long‐term (spanning millennial geological timescales), examining fate eroded over extended periods. In addition direct measurement modeling approaches, estimation using indicators riverine material popular constraining chemical‐erosion‐driven Lastly, highlight key challenges related To overcome potential biases in future studies, strongly recommend integrated research that addresses a well‐defined timescale. A comprehensive understanding mechanisms driving lateral crucial closing global budget.

Language: Английский

Citations

1
Assessing the contribution of human activities and climate change to the dynamics of NPP in ecologically fragile regions DOI Creative Commons
Bingxin Ma,

Juanli Jing,

Bing Liu

et al.

Global Ecology and Conservation, Journal Year: 2023, Volume and Issue: 42, P. e02393 - e02393

Published: Jan. 31, 2023

Fragile ecological regions are the key zones for conducting engineering construction. Exploring intrinsic linkage between vegetation dynamics and climate change human activities is important government to formulate reasonable effective environmental protection policies in different types of ecologically fragile regions. This study used Net Primary Productivity (NPP) as an indicator, based on multitemporal land use data, separate anthropogenic climatic disturbance areas. We revealed dynamics, explored roles temperature precipitation, assessed relative contributions four China from 2001 2019. The indicated that NPP showed increasing trends degrees arid region northwest (AN), Loess Plateau (LP), Tibetan (TP) karst southwest (KS) early 21st century. correlation precipitation was higher than In northern zone, cause increase NPP. drought resistance largely symbolized its ability resist risk degradation. Climate has played a positive role growth Except TP, have contributed construction other regions, with strongest contribution LP (2.10 gC m−2 yr−1), which some progress this region. Due degradation forests grasslands caused by overgrazing farmland reclamation departments should give timely attention security avoid causing future, we suggest natural humanitarian characteristics be considered before formulating measures reasonably taken achieve effectiveness standardization management.

Language: Английский

Citations

18
Differentiation characteristics of karst vegetation resilience and its response to climate and ecological restoration projects DOI Open Access
Tiantian Chen, Qiang Wang, Yuxi Wang

et al.

Land Degradation and Development, Journal Year: 2023, Volume and Issue: 34(16), P. 5055 - 5070

Published: July 16, 2023

Abstract In light of the recent pressure from global warming, extreme drought events, and deleterious human activity, strength long‐term change trends vegetation in karst regions—in terms their resistance to external disturbances—have not been studied systematically. Therefore, herein, we quantified resilience its nonlinear south China under different environmental gradients by measuring lag‐1 autocorrelation time‐series Normalized Difference Vegetation Index (1990–2018), clarifying driving forces changes. It was shown that monotonous. first stage (pre‐2002), precipitation warming promoted increase regional ( slope = −0.045, p < 0.0001). second (during 2002–2010), increasing trend obvious difficult keep up with productivity, indicating time‐lagged effect ecological restoration projects resilience. third (post‐2010), due continuous advancement projects, increased significantly had largest amplitude −0.128, Simultaneously, gradients, showed significant differentiation characteristics. comparison non‐karst regions, increases were more regions especially post‐2010. With soil depth, exhibited an trend, dependence on soil. At slopes >25°, most obviously meadows largest, which can be preferred type for projects. This research provides another perspective understand ecosystem results will facilitate protection ecosystems.

Language: Английский

Citations

18
Evaluating the impact of soil erosion on soil quality in an agricultural land, northeastern China DOI Creative Commons
Haiyan Fang, Yuyu Zhai, Chaoyue Li

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: July 7, 2024

Abstract The impact of soil erosion on quality is still not systematically understood. purpose this study was thus to quantify the and its change with slope morphology in an agricultural field, northeastern China based radionuclide 137 Cs, unmanned aerial vehicle derived high resolution digital elevation model, sampling. Cs method yielded average rate − 275 t km −2 yr −1 ranging from 1870 1557 . index total dataset (SQI_TDS) can be well explained by that minimum data set (SQI_MDS) a determination coefficient R 2 0.874. SOM, sand, cation exchange capacity MDS play more important roles than other indicators. Soil significantly affected erosion, Adj. 0.29 0.33 for SQI_TDS SQI_MDS, respectively. spatial variations were both topography. must controlled according topographic characteristics China.

Language: Английский

Citations

6
Identifying the Multi-Scale Influences of Climate Factors on Runoff Changes in a Typical Karst Watershed Using Wavelet Analysis DOI Creative Commons

Luhua Wu,

Shijie Wang, Xiaoyong Bai

et al.

Land, Journal Year: 2022, Volume and Issue: 11(8), P. 1284 - 1284

Published: Aug. 10, 2022

Identifying the impacts of climatic factors on runoff change has become a central topic in climate and hydrology research. This issue, however, received minimal attention karst watersheds worldwide. Multi-resolution analysis (MRA), continuous wavelet transform (CWT), cross (XWT) coherence (WTC) are used to study teleconnection time frequency between hydrological processes typical watershed at different scales. The main results are: (1) All exhibit cycle 12-month scales with changes, but periodic bandwidth rainfall changes is much wider than that temperature evaporation, indicating factor affecting changes. (2) In other cycles, impact interlacing phenomena positive negative, evaporation mainly negative. (3) response high-energy region low-energy significant-correlation shown correlation smaller phase angle, it slightly lagged 16-month Moreover, lags behind for 1–2 months those regions. (4) It been found there strong effect over runoff, lesser runoff. sheds light teleconnections rainfall, evapotranspiration surface which turn might help attain better management water resources watersheds.

Language: Английский

Citations

23
Development of a decision framework for river health and water yield ecosystem service in watershed DOI
Hongxiang Wang, Lintong Huang, Haitao Zhang

et al.

Journal of Hydrology, Journal Year: 2023, Volume and Issue: 623, P. 129773 - 129773

Published: June 9, 2023

Language: Английский

Citations

14
Carbon potential of China's Grain to Green Program and its contribution to the carbon target DOI
Yinqiu Ma, Lin Huang, Jiahui Li

et al.

Resources Conservation and Recycling, Journal Year: 2023, Volume and Issue: 200, P. 107272 - 107272

Published: Nov. 17, 2023

Language: Английский

Citations

13
Air pollution concentration fuzzy evaluation based on evidence theory and the K-nearest neighbor algorithm DOI Creative Commons
Bian Chao,

Huang Guang Qiu

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

Published: April 2, 2024

Background : Air pollution, characterized by complex spatiotemporal dynamics and inherent uncertainty, poses significant challenges in accurate air quality prediction, current methodologies often fail to adequately address these complexities. Objective: This study presents a novel fuzzy modeling approach for estimating pollution concentrations. Methods: evaluation method integrates an improved evidence theory with comprehensive weighting the K-nearest neighbor (KNN) interval distance within framework of matter-element extension model. involves generating basic probability assignment (BPA) based on similarity, performing sequential fusion using Dempster–Shafer theory, enhancing results via weighting, conducting concentrations KNN distance. Results: Our achieved improvements monitoring concentrations, incorporating factors pollutant more effectively than existing methods. Implementing subjective–objective reduced error rate 38% relative alternative Discussion: Fusion multi-source data this mitigates uncertainty enhances accuracy method. It produces concentration results, improving considering correlation, toxicity, levels. Compared traditional air-quality indices, our achieves greater better interpretability, making it possible develop effective management strategies. Future research should focus expanding dataset include diverse geographical meteorological conditions, further refining model integrate external like regional industrial activity, computational efficiency real-time applications.

Language: Английский

Citations

5