Ecological security pattern based on remote sensing ecological index and circuit theory in the Shanxi section of the Yellow River Basin

Ecological Indicators, Journal Year: 2024, Volume and Issue: 166, P. 112382 - 112382

Published: July 19, 2024

Evaluating the quality and establishing an ecological network are beneficial for maintaining ecosystem health stability optimizing national spatial pattern. This study used morphological pattern analysis (MSPA) remote sensing index (RSEI) to identify sources (ESs) in Shanxi section of Yellow River Basin (SYRB). Comprehensive resistance surface is constructed corrected based on weight. The corridor was identified by Linkage Mapper tool, node barrier points were determined basis minimum cost path theory establish security (ESP) SYRB. 108 ESs identified, with a total area 34,157.42 km2. unevenness distribution obvious concentrated areas higher elevations environmental quality. We 243 corridors (ECs), totaling 3,259.44 km. main land use types ECs cultivated land, forest, grassland. Low-resistance mainly distributed central pearl-shaped basin, connecting two major source east west. high-resistance southern part which had highly fragmented at periphery. 41 pinch points, Mianshan Mountain, plays key role energy exchange between ESs. 26 overlapped ECs, obstructed landscape connectivity. A comprehensive "two zones, one belt, three corridors" ESP established, providing solid theoretical support practical guidance future sustainable development enhanced design

Language: Английский

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Impact of Land Use/Land Cover Change on Ecological Quality during Urbanization in the Lower Yellow River Basin: A Case Study of Jinan City

Remote Sensing, Journal Year: 2022, Volume and Issue: 14(24), P. 6273 - 6273

Published: Dec. 11, 2022

Rapid urbanization in the lower Yellow River basin has greatly contributed to socio-economic development of Northern China, but it also exacerbated land use/land cover change, with significant impacts on ecology. Ecological quality is a comprehensive spatial and temporal measure an ecosystem’s elements, structure function, reflecting ecological state under external pressures. However, how change affects during rarely been explored. In this study, Jinan, megacity basin, was taken as typical region, response 2000, 2010 2020 retrieved using remote sensing index. For mixed types, type-decomposition heterogeneity quantification method based abundance index proposed, impact mechanisms were revealed by coupling GeoDetector. The results show that: (1) Farmland built-up areas, dominant primary factors controlling pattern quality. (2) Urban expansion farmland protection policies resulted transfer woodland areas well grassland farmland, which intensified degradation (3) prompted main cause for improvement (4) Although urban implemented parallel, uneven changes 1.4 times expanded area poorer increasingly serious agglomeration effects. This study can provide scientific references conservation high-quality, sustainable cities basin.

Language: Английский

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Construction and evaluation of the Panjin wetland ecological network based on the minimum cumulative resistance model

Ecological Modelling, Journal Year: 2025, Volume and Issue: 505, P. 111118 - 111118

Published: April 7, 2025

Language: Английский

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Temporal and Spatial Response of Ecological Environmental Quality to Land Use Transfer in Nanling Mountain Region, China Based on RSEI: A Case Study of Longnan City

Land, Journal Year: 2024, Volume and Issue: 13(5), P. 675 - 675

Published: May 13, 2024

Nanling Mountain region is a typical southern hilly region, which plays an important ecological and environmental protection role in China’s overall land pattern. Based on the remote sensing image data of Longnan City 2013, 2018 2023, this paper interpreted use type analyzed transfer situation by using flow, matrix. At same time, based index (RSEI) model, quality from 2013 to 2023 was retrieved. The temporal spatial response model discussed autocorrelation geographical detector. results show that decrease forest (16.23 km2) increase construction (13.25 were main transfers City. environment indexes 0.789, 0.917 0.872, respectively, showing trend “first rising then decreasing”. north significantly lower than south, poor area appeared around northern urban area, “inward contraction”. Forest land, garden grassland, cultivated water have positive impact quality, while traffic other negative quality. different modes related change interaction between cover (LUCC) factors had great evolution

Language: Английский

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Ecological Security Pattern Construction in Rural Settlements Based on Importance and Vulnerability of Ecosystem Services: A Case Study of the Southeast Region of Chongqing, China

Sustainability, Journal Year: 2023, Volume and Issue: 15(9), P. 7477 - 7477

Published: May 2, 2023

With the development of urbanization, a large number village settlements have disappeared. As important carriers ethnic and cultural heritage, are for continuation folk culture farming spirit. Building regional ecological security pattern helps to protect integrity promote sustainable Chinese nation. In this work, importance ecosystem services was first obtained by using Integrated Valuation Ecosystem Services Tradeoffs model (In-VEST) revised universal soil loss equation (RUSLE) evaluate in southeastern region Chongqing (SRC). Then, evaluation results were combined with sensory derive conservation areas identify source points their high-value areas. Finally, corridors minimum cumulative resistance (MCR). The constructed, i.e., triangular protection area strategy “one screen, one belt, three cores”. show following: total sites larger than 20 km2 SRC is 436.02 km2, accounting 2.28% SRC. largest patch 69.93 16.04% sites. Thirteen identified as follows: four Youyang County, Shizhu Wulong Pengshui County. There 78 length 4832.82 km, including 32 about 1544.53 km 46 potential 3288.29 km. Based on constructed eight factors, spatial variation surface analyzed, showing trend being high west central part low surrounding area. County Nature Reserve sensitivity that overlap extreme, which should be given sufficient attention. core protected consist mountains Qiyao Mountain Range, Wuling Reserve. based mode “source–ecological corridor–ecological node” can function areas, providing scientific guidance China.

Language: Английский

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Landscape pattern optimization of small watershed based on water purification (Danjiangkou reservoir area, China)

Environmental and Sustainability Indicators, Journal Year: 2024, Volume and Issue: 22, P. 100366 - 100366

Published: Feb. 28, 2024

In recent years, landscape pattern optimization has been regarded as a cutting-edge science in various fields, and basin hydrology is no exception. Its effect on water purification also focused on. Based the analysis of land use types patterns Danjiangkou Reservoir Basin, combined with determination quality indicators relationship between spatial Landscape Morphology was studied; It found that among basic characteristic many basins, main influencing factors high Variable importance for projection (VIP>1) are IJI (Interspersion Juxtaposition Index), COHE (Patch Cohesion AI (Aggregation PD Density), ED (Edge Density); Using PLSR (Partial Least Squares Regression) analysis, were discussed. there significant negative regression (Rc < 0) CODMn (permanganate index), TP (Total Phosphorus), TN Nitrogen) NH4+-N (ammonia nitrogen) basin, topographic humidity index, relief, slope, forest area; The patch connectivity index used to determine ecological source areas reservoir have improved need be protected; priority corridor construction protection determined; With help minimum cumulative resistance model, sources constructed; grips identified. order provide technical support configuration purpose area.

Language: Английский

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Monitoring and Analysis of the Driving Forces of Changes in the Ecological Environment of a Mining Area of Western China from 1986 to 2022

Processes, Journal Year: 2023, Volume and Issue: 11(6), P. 1721 - 1721

Published: June 4, 2023

The remote sensing ecological index (RSEI) has been widely used in the rapid monitoring and evaluation of regional environment; however, research on main factors that cause changes RSEI impact human activities mining area is not often explored. To this end, paper selected Landsat (TM/OLI) series images from 1986 to 2022; extracted four important indicators normalized difference vegetation (NDVI), wetness component tasseled cap transformation (WET), built-up soil (NDBSI), land surface temperature (LST); calculated based principal analysis method; monitored evaluated environment Shendong Mining Area for a period 36 years; analyzed driving forces these changes. results show following: (1) status study shown an overall upward trend during 1986–2022 period. (2) From 2022, with grade 0.4–0.6 increased by 1142.74 km2, 0.6–0.8 124.09 0.8–1.0 0.73 km2. (3) In past years, proportion positive was 97.52%, regions negative 6.20%. (4) Rainfall factor causes environment. By analyzing change relationship between RSEI, reference can be provided formulation environmental protection policies planning areas.

Language: Английский

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Evolution of long-term ecological security pattern of island city and its influencing factors—a case study in Pingtan Island

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

Published: June 13, 2024

Introduction: As the global urbanization process accelerates, contradiction between economic development demands and ecological protection becomes increasingly prominent. Methods: In this study, we simulated evolution of security pattern (ESP) Pingtan Island from 2000 to 2020 by extracting sources using Remote Sensing Ecological Index (RSEI), identifying corridors key nodes combining with Linkage Mapping (LM) Circuit Theory. addition, Geodetector was utilized identify these major determinants affecting RSEI. Results: The results showed 1) From 2020, environmental quality (EEQ) continued improve, mean value RSEI gradually increased 0.47 0.51. 2) Univariate analysis that elevation slope were most significant factors spatial variability RSEI, interaction proportion built-up area having a effect on EEQ. 3) number extent expanded year variability. At same time, range also underwent phase adjustment. 4) Further exploration ESP in identified 32 pinch points (EPPs) 52 barrier (EBPs), which mainly located within or near corridors, indicating areas for future restoration efforts. Discussion: These insights help enhance urban planning ecosystem provide blueprint comparable island environments.

Language: Английский

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Long Time-Series and High-Frequency Ecological Evaluation of Henan Section of the Yellow River

Published: Jan. 1, 2024

Language: Английский

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Comprehensive evaluation and future trend prediction of ecological security in Fuzhou City: a DIKW framework and multi-model integration analysis

Human and Ecological Risk Assessment An International Journal, Journal Year: 2024, Volume and Issue: 30(9-10), P. 833 - 857

Published: Nov. 5, 2024

Understanding the ecological security situation of Fuzhou City holds significant theoretical and practical value for government departments in implementing development strategies achieving Sustainable Development Goal 11 (Sustainable Cities Communities). Using Data, Information, Knowledge, Wisdom (DIKW) framework, this study combined various remote sensing GIS methods to comprehensively analyze Fuzhou's past, present, future levels. The results showed a strong isotropic cluster city's security. Among influencing factors, degree regional was found have greatest impact, while water body coverage had least. factors are mutually reinforcing. Under natural scenario, area secure level 2020 decreased by 1243.70 km2, under protection it declined 1263.34 km2. In future, is expected face increasing fragmentation. Based on these findings, proposes balance economic City. These recommendations aim provide with relevant data support land resource management contribute high-level

Language: Английский

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