Landscape structure evolution and ecological risk evaluation of oasis desert cities: A case study of Tiemenguan city

PLoS ONE, Journal Year: 2025, Volume and Issue: 20(5), P. e0321762 - e0321762

Published: May 7, 2025

The rapid development of oasis desert cities adversely affects fragile ecosystems, preventing regional sustainable development. This study investigates the spatiotemporal evolution characteristics and potential quantitative relationship between landscape structure (OLS) ecological risk index (ERI) trend in different scenarios Tiemenguan City, a typical city an arid zone northwestern China, from 1990 to 2020. We calculated ERI thresholds for types, classified levels, examined factors influencing risk. normalized difference vegetation (NDVI) were NDVI ≥ 30% oases, 10% <NDVI < transition zones, ≤ areas. Under government control, transitions cropland, woodland, grassland built-up unused land decreased by 20%, whereas conversions increased 30%. results showed following: (1) area expanded continuously 175.5 km 2 345.3 during 30 years. zones 49.7% 37.9%, respectively. was strongly correlated with OLS. zone-transition zone-desert 0.08–0.085 0.111–0.118, (2) Socioeconomic factors, including infrastructure expansion, population density, GDP, dominant influences, contributing 64% ERI, influence natural such as climate declined. (3) low-ERI areas 3.3% under significantly, slowing growth rate zone. quantitatively evaluated types’ levels analyzed effects dynamic migration on type stability. paper provides systematic research framework assessment various types scientific basis conservation related research.

Language: Английский

20-year physical habitat quality evaluation and its impact on biodiversity of Poyang Lake, China

Environmental and Sustainability Indicators, Journal Year: 2025, Volume and Issue: unknown, P. 100708 - 100708

Published: May 1, 2025

Language: Английский