Results 11 to 20 of about 2,808 (262)
Aridity threshold in controlling ecosystem nitrogen cycling in arid and semi-arid grasslands [PDF]
Nature Communications, 2014 Higher aridity and more extreme rainfall events in drylands are predicted due to climate change. Yet, it is unclear how changing precipitation regimes may affect nitrogen (N) cycling, especially in areas with extremely high aridity. Here we investigate soil N isotopic values (δ(15)N) along a 3,200 km aridity gradient and reveal a hump-shaped ...
Wang, Chao +13 more
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Spatial variability and driving factors of soil multifunctionality in drylands of China
Regional Sustainability, 2022 Drylands are highly vulnerable to climate change and human activities. The drylands of China account for approximately 10.8% of global drylands, and China is the country most severely affected by aridity in Asia. Therefore, studying the spatial variation
Shihang Zhang +7 more
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Nature Communications, 2021 Water use efficiency is a key measure of plant responses to climate change. Here, the authors investigate its control by CO2, nitrogen deposition, and water availability using a global tree-ring dataset.
Mark A. Adams +4 more
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Earth's Future, 2022 Fire regimes are influenced by both exogenous drivers (e.g., increases in atmospheric CO2 and climate change) and endogenous drivers (e.g., vegetation and soil/litter moisture), which constrain fuel loads and fuel aridity.
Jianning Ren +7 more
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Nitrogen addition delays the emergence of an aridity-induced threshold for plant biomass
National Science Review, 2023 ABSTRACT Crossing certain aridity thresholds in global drylands can lead to abrupt decays of ecosystem attributes such as plant productivity, potentially causing land degradation and desertification. It is largely unknown, however, whether these thresholds can be altered by other key global change drivers known to affect the water-use ...
Hailing Li +9 more
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Alternate Stable States and Threshold Effects in Semi-Arid Grazing Systems
Oikos, 1997 Models that explain the discontinuous behaviour of semi-arid grazing systems usually emphasize herbivore feeding characteristics or plant competition as possible mechanisms. Field studies indicate, however, that plant-soil relations could be more important.
Rietkerk, M.G., Koppel, J. van de
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IEEE Transactions on Geoscience and Remote Sensing, 2022 Emerging evidence suggests that ecosystem responses to increases in atmospheric aridity, a hallmark of climate change, exhibit multiple thresholds across global drylands. However, it is not clear whether aridity thresholds exist in the relationships between ecosystem functions and remotely sensed indicators (RSIs).
Zhao, Yanchuang +4 more
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Inter-annual variations of vegetation dynamics to climate change in Ordos, Inner Mongolia, China.
PLoS ONE, 2022 To reveal the characteristics of climate change and the controlling factors for vegetation dynamics in the Ordos, Inner Mongolia, China, 34 years (1982-2015) of regional climate variables and vegetation dynamics were investigated.
Xiru Jia +5 more
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Determination Method of Water Saving Threshold in Arid Area
Procedia Engineering, 2012 AbstractAiming at the positive and negative effects induced by water saving measures, these two hydrological and ecological effects in arid region are analyzed in detail. Water use efficiency and underground water level are selected as two indexes to evaluate the positive and negative effects of water saving activities respectively, and then the theory
Jinping, Zhang +2 more
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Distinct vegetation response to drying and wetting trends across an aridity threshold
Environmental Research Communications, 2021 Abstract Aridity regulates the terrestrial ecosystem productivity in water-limited regions. The aridity index (AI) is often defined as the ratio of annual precipitation to annual potential evapotranspiration. However, how the drying and wetting influence the vegetation response and its characteristic along aridity gradient remains ...
Wei Zhao +5 more
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