Large Offsets in the Impacts Between Enhanced Atmospheric and Soil Water Constraints and CO2 Fertilization on Dryland Ecosystems DOI Creative Commons
Tian Feng, Lei Wang, Ye Yuan

et al.

Remote Sensing, Journal Year: 2024, Volume and Issue: 16(24), P. 4733 - 4733

Published: Dec. 18, 2024

Greening dryland ecosystems greatly benefits from significant CO2 fertilization. This greening trend across global drylands, however, has also been severely constrained by enhancing atmospheric and soil water (SW) deficits. Thus far, the relative offsets in contributions between vapor pressure deficit (VPD), SW at varying depths, fertilization to vegetation dynamics, as well differences impacts of decreasing different depths on over long periods, remain poorly recorded. Here, this study comprehensively explored dynamics high VPD, low SW, rising concentration drylands during 1982–2018 using process-based models satellite-observed Leaf Area Index (LAI), Gross Primary Productivity (GPP), solar-induced chlorophyll fluorescence (SIF). Results revealed that decreasing-SW-induced reductions LAI were larger than those caused VPD. Furthermore, was more subsurface (7–28 cm) among various layers. Notable found enhanced constraints fertilization, with former offsetting approximately 38.49% beneficial effects latter changes drylands. Process-based supported finding increasing failed overwhelmingly offset ecosystems. work emphasizes impact highlights far-reaching importance despite constraints.

Language: Английский

Large Offsets in the Impacts Between Enhanced Atmospheric and Soil Water Constraints and CO2 Fertilization on Dryland Ecosystems DOI Creative Commons
Tian Feng, Lei Wang, Ye Yuan

et al.

Remote Sensing, Journal Year: 2024, Volume and Issue: 16(24), P. 4733 - 4733

Published: Dec. 18, 2024

Greening dryland ecosystems greatly benefits from significant CO2 fertilization. This greening trend across global drylands, however, has also been severely constrained by enhancing atmospheric and soil water (SW) deficits. Thus far, the relative offsets in contributions between vapor pressure deficit (VPD), SW at varying depths, fertilization to vegetation dynamics, as well differences impacts of decreasing different depths on over long periods, remain poorly recorded. Here, this study comprehensively explored dynamics high VPD, low SW, rising concentration drylands during 1982–2018 using process-based models satellite-observed Leaf Area Index (LAI), Gross Primary Productivity (GPP), solar-induced chlorophyll fluorescence (SIF). Results revealed that decreasing-SW-induced reductions LAI were larger than those caused VPD. Furthermore, was more subsurface (7–28 cm) among various layers. Notable found enhanced constraints fertilization, with former offsetting approximately 38.49% beneficial effects latter changes drylands. Process-based supported finding increasing failed overwhelmingly offset ecosystems. work emphasizes impact highlights far-reaching importance despite constraints.

Language: Английский

Citations

0