Soil moisture decline in China’s monsoon loess critical zone: More a result of land-use conversion than climate change

Proceedings of the National Academy of Sciences, Год журнала: 2024, Номер 121(15)

Опубликована: Апрель 3, 2024

Soil moisture (SM) is essential for sustaining services from Earth’s critical zone, a thin-living skin spanning the canopy to groundwater. In Anthropocene epoch, intensive afforestation has remarkably contributed global greening and certain service improvements, often at cost of reduced SM. However, attributing response SM in deep soil such human activities great challenge because scarcity long-term observations. Here, we present 37 y (1985 2021) analysis dynamics two scales across China’s monsoon loess zone. Site-scale data indicate that land-use conversion arable cropland forest/grassland caused an 18% increase deficit over 0 18 m depth ( P < 0.01). Importantly, this intensified time, despite limited climate change influence. Across Loess Plateau, storage 10 layer exhibited significant decreasing trend 1985 2021, with turning point 1999 when starting afforestation. Compared before 1999, relative contributions decline after were −8% 108%, respectively. This emphasizes pronounced impacts intensifying conversions as principal catalyst decline. Such shifts total area into at-risk status, mainly semiarid region, thereby threatening security. To mitigate risk, future land management policies should acknowledge crucial role their interplay change. imperative ensure security sustain zone services.

Язык: Английский

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Water use pattern and transpiration of Mongolian pine plantations in relation to stand age on northern Loess Plateau of China

Agricultural and Forest Meteorology, Год журнала: 2023, Номер 330, С. 109320 - 109320

Опубликована: Янв. 17, 2023

Язык: Английский

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Seasonal variations of plant water use in the karst desertification control

The Science of The Total Environment, Год журнала: 2023, Номер 885, С. 163778 - 163778

Опубликована: Май 4, 2023

Язык: Английский

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Water consumption turning point for Robinia pseudoacacia occurs at its middle stand age

Plant and Soil, Год журнала: 2025, Номер unknown

Опубликована: Янв. 25, 2025

Язык: Английский

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Coexisting plants restored in karst desertification areas cope with drought by changing water uptake patterns and improving water use efficiency

Journal of Hydrology, Год журнала: 2025, Номер unknown, С. 132813 - 132813

Опубликована: Фев. 1, 2025

Язык: Английский

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Water use strategies for three dominant tree species in pure plantations of the semi-arid Chinese Loess Plateau

Journal of Hydrology, Год журнала: 2025, Номер unknown, С. 132844 - 132844

Опубликована: Фев. 1, 2025

Язык: Английский

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Deep soil moisture has limited impact on mitigating drought stress effects on plant transpiration in a subtropical secondary forest

Plant and Soil, Год журнала: 2025, Номер unknown

Опубликована: Март 26, 2025

Язык: Английский

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Changes in soil moisture and organic carbon under deep-rooted trees of different stand ages on the Chinese Loess Plateau

Agriculture Ecosystems & Environment, Год журнала: 2022, Номер 328, С. 107855 - 107855

Опубликована: Янв. 14, 2022

Язык: Английский

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Water sources used by artificial Salix psammophila in stands of different ages based on stable isotope analysis in northeastern Mu Us Sandy Land

CATENA, Год журнала: 2023, Номер 226, С. 107087 - 107087

Опубликована: Март 27, 2023

Язык: Английский

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Changes in water-use strategies and soil water status of degraded poplar plantations in water-limited areas

Agricultural Water Management, Год журнала: 2024, Номер 296, С. 108799 - 108799

Опубликована: Март 28, 2024

Poplar plantations play an active role in windbreak and sand-fixation timber production water-limited areas, but the large-scale are experiencing degradation, characterized by short trees, small size, dieback. Moreover, potential impacts of plantation degradation on ecohydrological processes soil-plant systems remain unclear. We continuously measured soil water content (SWC), hydrogen oxygen isotopic compositions plant xylem water, carbon leaf, sap flow velocity poplar trees under various degraded (no degraded, ND; lightly LD; severely SD) during 2021 growing season (May–September). also investigated tree root at a depth 0–200 cm. Our results showed that as intensified, weight density different depths decreased proportion shallow layer (0–40 cm) increased. Although SWC did not change plantations, SWCs middle (40–80 deep (80–200 were higher LD SD than ND which might be related to reduced transpiration plantations. The Bayesian mixing model all can shift source from layers process wetting drying. Evidence leaf isotopes suggested increased sensitivity intrinsic water-use efficiency SWC. findings demonstrate normal growth is prone desiccation due high demand alleviate depletion low transpiration. For rain-fed proper thinning measures reducing evaporation may necessary avoid excess consumption soils.

Язык: Английский

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