Pre-Season Precipitation and Temperature Have a Larger Influence on Vegetation Productivity than That of the Growing Season in the Agro-Pastoral Ecotone in Northern China

Agriculture, Journal Year: 2025, Volume and Issue: 15(2), P. 219 - 219

Published: Jan. 20, 2025

Climate change and human activities are reshaping the structure function of terrestrial ecosystems, particularly in vulnerable regions such as agro-pastoral ecotones. However, extent to which climate impacts vegetation growth these areas remains poorly understood, largely due modifying effects human-induced land cover changes on sensitivity climatic variations. This study utilizes satellite-derived indices, datasets, data investigate influence both ecotone northern China (APENC) from 2001 2022. The results reveal that productivity, indicated by kernel Normalized Difference Vegetation Index (kNDVI), varies depending type APENC. Moreover, ridge regression modeling shows pre-season conditions (i.e., precipitation temperature) have a stronger positive impact growing-season productivity than growing season temperature, while effect vapor pressure deficit (VPD) is negative. Notably, kNDVI exhibits significant (p < 0.05) 34.12% region negative VPD 38.80%. model explained 89.10% total variation (R2 = 0.891). These findings not only emphasize critical role historical contemporary shaping but also provide valuable insights into how adjust agricultural animal husbandry management strategies improve regional adaptation based information previous seasons fragile regions.

Language: Английский

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Advancements in Monitoring Tree Phenology Under Global Change: A Comprehensive Review

Forests, Journal Year: 2025, Volume and Issue: 16(5), P. 771 - 771

Published: April 30, 2025

This comprehensive review explores recent advancements in monitoring tree phenology the context of global change. As climate change continues to alter ecosystems worldwide, understanding has become increasingly crucial for predicting ecological responses and informing conservation strategies. examines traditional ground-based observation methods, highlights their strengths limitations, discusses integration modern technologies such as remote sensing, digital cameras, sensor networks. Special attention is given role citizen science initiatives expanding phenological data collection. also addresses challenges posed by monitoring, including shifting patterns complexities. Furthermore, it applications research, ecosystem management, biodiversity conservation. The paper concludes identifying future directions emerging that promise revolutionize emphasizing need interdisciplinary collaboration standardized methodologies enhance our a rapidly changing world.

Language: Английский

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Twenty-Year Variability in Water Use Efficiency over the Farming–Pastoral Ecotone of Northern China: Driving Force and Resilience to Drought

Agriculture, Journal Year: 2025, Volume and Issue: 15(11), P. 1164 - 1164

Published: May 28, 2025

Water use efficiency (WUE), as an important metric for ecosystem resilience, has been identified to play a significant role in the coupling of carbon and water cycles. The farming–pastoral ecotone Northern China (FPENC), which is highly susceptible drought due scarcity, long recognized ecologically fragile zone. ecological restoration projects have mitigated land degradation maintain sustainability dryland. However, process greening drylands potential impact availability. A comprehensive analysis WUE FPENC can help understand absorption consumption. Using gross primary production (GPP) evapotranspiration (ET) data from MODerate resolution Imaging Spectroradiometer (MODIS), alongside biophysical variables cover information, spatio-temporal variations 2003 2022 were examined. Additionally, its driving force resilience also revealed. Results indicated that annual mean fluctuated between 0.52 2.60 gC kgH2O−1, showing non-significant decreasing trend across FPENC. Notably, averaged underwent decline before 2012 (p < 0.05), then showed slight increased = 0.14) during year afterward (i.e., 2013–2022). In terms climatic controls, temperature (Temp) soil volumetric content (VSWC) dominantly affected 2012; VPD (vapor pressure deficit), VSWC, Temp controls 2013 2022. findings suggest wetter atmosphere moisture contribute WUE. total, 59.2% was shown be non-resilient, grassland occupy majority area, located Mu Us Sandy Horqin Sand Land. These results underscore importance factors regulation over highlight necessity focused research on responses climate change, particularly extreme events like droughts, future.

Language: Английский

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Increased Contribution of Extended Vegetation Growing Season to Boreal Terrestrial Ecosystem GPP Enhancement

Remote Sensing, Journal Year: 2024, Volume and Issue: 17(1), P. 83 - 83

Published: Dec. 28, 2024

Rapid Arctic warming is driving significant changes in boreal vegetation phenology and productivity. The potentially asynchronous response of these processes could substantially alter the relative impacts phenological shifts on variations gross primary productivity (GPP), but this remains poorly understood. objective study to quantify impact extension ecosystem GPP across different periods from 1982 2018. To achieve this, we developed a statistical model that integrates physiology, introduced new metric, Relative Increment Effect (RIE), assess contribution increase. Our analysis revealed became dominant driver increment over time. Specifically, overall RIE for increased by 22% earlier period (P1: 1982–2000, 3.2) more recent (P2: 2001–2018, 3.93). This increase was pronounced grass shrub ecosystems. Spatial patterns showed increases were particularly concentrated at high latitudes, especially northern Siberia. These findings suggested playing an increasing role regulating productivity, with implications carbon budget under future scenarios.

Language: Английский

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