Spatiotemporal pattern of NPP and its response to climatic factors in the Yangtze River Economic Belt

Ecological Indicators, Journal Year: 2024, Volume and Issue: 162, P. 112017 - 112017

Published: April 10, 2024

Net primary productivity (NPP) of terrestrial ecosystems serves as a crucial carbon sink, playing significant role in mitigating climate change. This study, focusing on the Yangtze River Economic Belt (YREB), key area for both economic development and ecological conservation China, evaluates temporal spatial changes regional NPP its responses to climatic factors against backdrop global Utilizing long-term meteorological grid data from 1981 2017, we analyzed annual change patterns linear nonlinear using copula functions. Our findings indicate that 57.00 % YREB has experienced increase NPP, with most substantial decreases observed Shanghai surrounding areas (P < 0.05). Temperature emerged driver, positively correlating over half study Moreover, response temperature precipitation underscores complex interactions between these factors, revealing sensitivity variations surpasses precipitation. The also highlights influence solar radiation topographic positive correlation 15.85 practical significance lies their implications management resilience strategies. potential targeted optimize sequestration across YREB. Furthermore, identified topography influencing offer valuable insights formulation adaptive strategies enhance ecosystem contribute achieving neutrality goals. By elucidating dynamics range environmental this provides foundation informed decision-making mitigation efforts within similar regions globally.

Language: Английский

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Temporal and spatial variability of landscape ecological risk in the Yangtze River Midstream Urban Agglomeration in the context of climate change

Human and Ecological Risk Assessment An International Journal, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 30

Published: Jan. 10, 2025

The Yangtze River Midstream Urban Agglomeration is a pivotal economic zone in China. Over the past 35 years, climate change has increased ecosystem vulnerability and instability this area. Therefore, assessing landscape ecological risk (LER) vital for region. This study analyzed LER variations from 1985 to 2020 using statistical methods indices, forecasted changes 2025 2050 with multi-model meteorological data. Results show following: (1) indices have decreased over last notable shift high-risk medium-risk areas. High areas remained concentrated low-elevation, densely urbanized central regions, indicating severe damage compared high-elevation (2) Climate significantly impacts index, temperature exerting stronger influence than precipitation. Overall, decreases rising temperatures precipitation, though some cities exhibit opposite trends. (3) Future multi-Shared Socioeconomic Pathway scenarios suggest general decrease predominantly resulting low- zones. will persist low-elevation zones, particularly southern plains. Given high plains, timely governmental regulation control measures are essential ensuring ecologically sustainable development.

Language: Английский

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Characterizing landscape fragmentation of Koitobos river sub-basin, Trans-Nzoia, Kenya

Heliyon, Journal Year: 2024, Volume and Issue: 10(7), P. e29237 - e29237

Published: April 1, 2024

The changes in landscape structure and functioning due to unprecedented human interference are hastening across the globe it is thus a compelling necessity preserve restore our ecosystems. This study aimed characterize levels of fragmentation, habitat structure, driving forces, perceptions residents on most preferred reconfiguration approaches. land use/land cover [LULC] change was first determined by interpreting 1973, 1986, 1995, 2002, 2014, 2022 Landsat images using QGIS 3.26 while selected fragmentation metrics were analyzed FRAGSTATS 4.2. Forests, shrubs, grasslands showed declining trend, except for agriculture, water, built-up areas, which depicted high increases periods [1973 2022]. area characterized as progressively fragmenting signified escalated values patch number [374 %], edge density [7828 %] between 1986 contagion [10.3%], declined value Shannon Diversity Index [SHDI] [-17.42%], evenness index [SHEI] [-25.8 connectedness [-43.3%]. Considering these results, losses forests coupled with expansive farmlands areas have led From field surveys oral interviews, this has not only left streams vulnerable massive sediment loads but also triggered annual floods occur during wet months even though onset rainfall seasons reported. findings call restoration integrated sustainable efforts, especially forests, grasslands, riparian corridors along urban planning community-based sensitization watershed management.

Language: Английский

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Climate change and Land Use/Land Cover Change (LUCC) leading to spatial shifts in net primary productivity in Anhui Province, China

PLoS ONE, Journal Year: 2024, Volume and Issue: 19(9), P. e0307516 - e0307516

Published: Sept. 6, 2024

As an important part of terrestrial carbon cycle research, net primary productivity is parameter to evaluate the quality ecosystem and plays role in analysis global climate change balance. Anhui Province Yangtze River Delta region eastern China. Based on theoretical basis CASA model, this paper uses MODIS NDVI, vegetation type data, meteorological LUCC estimate NPP during 2001–2020 analyzes its spatial-temporal pattern. The results showed that average province was 508.95 gC· (m 2 ·a) -1 , spatial heterogeneity strong, high value areas were mainly distributed Jiangnan Mountains Dabie Mountains. increased most Province, but decreased significantly 17.60% area, central area affected by urban rural expansion transformation River. dynamic result land use change. Meteorological data are positively correlated with NPP. Among them, correlation between temperature solar radiation higher, precipitation lowest among three. all cover types more than precipitation, especially forest grassland. decrease cultivated increase Artificial Surfaces (AS) may have contributed Province. Human activities weakened caused In conclusion, study refined drivers changes province, which conducive rational planning ecosystems balance measures.

Language: Английский

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Analysis of spatial and temporal variations of vegetation NPP and TWS in the Yangtze River Basin

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

Published: Oct. 22, 2024

Net primary productivity (NPP) is an important parameter reflecting vegetation growth, and water one of the necessary factors for growth. Investigating mutual influence between NPP significant ensuring stable development ecological environment. This study focuses on Yangtze River Basin (YRB) as research area, based medium-resolution imaging spectrometer (MODIS) data, climate gravity recovery experiment (GRACE) spatiotemporal evolution characteristics terrestrial storage (TWS) in YRB from 2000 to 2022 are explored analyzes with TWS. The results show that (4.10 gC·m−2·a−1) TWS (0.55 mm) have exhibited increasing trend 2022, a strong correlation two, which related recent environmental policies. Analysis impact reveals temperature significantly positively changes. Furthermore, comparisons indicate changes substantially promote plant In addition, comparison indicates promoting effect Surface (SWS) soil (SM) but lag, while consumption groundwater (GWS) has been growth without lag.

Language: Английский

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