Response of soil moisture and vegetation growth to precipitation under different land uses in the Northern Loess Plateau, China

Yang, Qian; Fan, Jun; Luo, Zhanbin

doi:10.1016/j.catena.2023.107728

Cited by 6 publications

(2 citation statements)

References 62 publications

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“…Notably, the WET index exhibited a higher contribution relative to NDVI in the RSEI calculation for the Yanhe watershed. This can be attributed to the region's' semi-arid climatic conditions and the spatial heterogeneity of local thermal and moisture conditions caused by the complex terrain and landforms [58]. Generally, water availability is a critical determinant of EEQ in such regions.…”

Section: Global Spatial Autocorrelation Analysis Of Rseimentioning

confidence: 99%

Spatial and Temporal Heterogeneity of Eco-Environmental Quality in Yanhe Watershed (China) Using the Remote-Sensing-Based Ecological Index (RSEI)

Zhang,

Hou,

Duan

et al. 2024

Land

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The long-term impacts of climate change and human activities have resulted in the Yanhe watershed, a typical watershed in the Loess Plateau region, exhibiting a high degree of vulnerability and significant heterogeneity in ecological environmental quality. This has led to environmental degradation and complex socio-ecological challenges. Consequently, there is an urgent need to carry out research on the spatial and temporal differentiation patterns of ecological environment quality. By utilizing remote sensing data spanning 21 years, this study evaluated the evolutionary trends and consistency of ecological environment quality (EEQ) within the Yanhe watershed based on the remote-sensing-based ecological index (RSEI). Furthermore, it examined global and local spatial autocorrelation of the RSEI by constructing a hexagonal grid, thereby revealing the spatiotemporal characteristics of EEQ at different scales within the Yanhe watershed. The results were as follows: (1) The EEQ has exhibited an overall upward trend in the past two decades, while it has displayed significant fluctuations; (2) the Global Moran’s I values for the years 2000, 2010, and 2020 were 0.18, 0.32, and 0.21, respectively, indicating a presence of spatial autocorrelation within the RSEI; (3) the overall EEQ of the Yanhe watershed will continue to improve, although the ecological quality in certain areas remains unstable due to local natural conditions and human activities. This research not only contributes to the technical framework for analyzing the spatiotemporal heterogeneity of EEQ but also provides actionable insights for ecosystem restoration and sustainability within the Loess Plateau watershed. Our work advances the understanding of ecological dynamics in semi-arid regions and offers a model for assessing ecological quality in similar environmental contexts.

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Section: Global Spatial Autocorrelation Analysis Of Rseimentioning

confidence: 99%

Spatial and Temporal Heterogeneity of Eco-Environmental Quality in Yanhe Watershed (China) Using the Remote-Sensing-Based Ecological Index (RSEI)

Zhang,

Hou,

Duan

et al. 2024

Land

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“…For a more comprehensive knowledge and accurate model predictions, the soil moisture findings from simulated or isolated rainfall events are crucial, while natural rainfall and field surveys provide data that are closer to reality over a long period of time. Seasonally distinct rainfall regimes in different climates and the dissimilarities of the hydrological response of vertical soil layers in diverse soils result in significant differences in their soil moisture, such as the red soil region [29][30][31], purple soil region [26,32], Loess plateau area [33,34] and montane grey soil [35]. In conclusion, long-term field observations of water storage in different soil layers of sloping tillage have been comparatively rare in the region of red soil; thus further data are essential for soil moisture and natural rainfall, as well as water management.…”

Section: Introductionmentioning

confidence: 99%

Response of Soil Moisture to Four Rainfall Regimes and Tillage Measures under Natural Rainfall in Red Soil Region, Southern China

Liang,

Chen,

Wang

et al. 2024

Water

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Investigating the effects of natural rainfall on the soil moisture for sloping farmland is extremely important for comprehending a variety of hydrological processes. Rainfall regimes can elicit different responses to soil moisture at the depth of soil layers, and the responses may differ depending on the landscape position of the sloping farmland. This paper utilized the surface runoff natural rainfall and soil moisture measured on sloping farmland with conventional tillage and contour tillage in the red soil area of China to investigate the influence of natural rainfall events on soil moisture content and to evaluate if the response results were consistent across the four rainfall regimes. Natural rainfall events were classified into different four regimes in line with rainfall duration, rainfall amount, and the maximum 30 min rainfall intensity (I30) by the k-means clustering method, including advanced, intermediate, uniform and delayed regimes. The result showed that the advanced regime was the predominant one in the study area, which represented 45.9% of the total rainfall events. The rainfall regimes influenced the surface runoff coefficient and runoff depth on sloping farmland for conventional and contour tillage, with the uniform regime generating the highest runoff coefficient (5.20% and 5.82%) and runoff depth (2.00% and 2.05%), respectively. For the conventional tillage, soil moisture at a depth of 0–20 cm increased appreciably when the rainfall amount was larger than 20 mm and larger than 30 mm for the advanced regime. For the contour tillage, soil moisture in 20–40 cm layer increased for the advanced regime when the rainfall amount was larger than 15 mm and 30 mm, while the values were modified with rainfall duration and the antecedent dry day (ADD). A longer rainfall duration had a more obvious effect on soil moisture increasing in deep soil. At a depth of 20 cm, the ADD showed an appreciably positive correlation with the increment in soil moisture, which means that a brief ADD produces a compounding effect for a natural rainfall event. The present results underline the complexity of the effect of the rainfall events on soil moisture under two tillage measures for different rainfall regimes and suggest that the advanced regime significantly affects the distinction of soil moisture and the contour tillage can effectively reduce soil water loss and enhance water storage on the sloping farmland with red soil, presenting a theoretical basis for local soil and water conservation research and sloping farmland conservation tillage management.

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Principles of terrestrial water distribution patterns and the role of soil hydraulic properties

Liu,

Zhang,

et al. 2024

CATENA

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Response of soil moisture and vegetation growth to precipitation under different land uses in the Northern Loess Plateau, China

Cited by 6 publications

References 62 publications

Spatial and Temporal Heterogeneity of Eco-Environmental Quality in Yanhe Watershed (China) Using the Remote-Sensing-Based Ecological Index (RSEI)

Spatial and Temporal Heterogeneity of Eco-Environmental Quality in Yanhe Watershed (China) Using the Remote-Sensing-Based Ecological Index (RSEI)

Response of Soil Moisture to Four Rainfall Regimes and Tillage Measures under Natural Rainfall in Red Soil Region, Southern China

Principles of terrestrial water distribution patterns and the role of soil hydraulic properties

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