Evaluating water provision service at the sub-watershed scale by combining supply, demand, and spatial flow

Li, Xiao; Sun, Wei; Zhang, Dou; Huang, Jinbo; Li, Dehuan; Ding, Ning; Zhu, Jingfeng; Xie, Yujing; Wang, Xiangrong

doi:10.1016/j.ecolind.2021.107745

Cited by 18 publications

(3 citation statements)

References 37 publications

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“…The carbon storage module calculated the historical carbon storage based only on the conversion of land use patterns, which is not sufficiently comprehensive [20]; due to the availability of data, we did not refer to the permanent monitoring sites data and NDVI in the evaluation, which meant that the results could not better characterize the impact of afforestation on regional carbon sinks. The InVEST model used the water balance method to calculate the annual water yield, and this module fails to consider the surface water and groundwater [62]. The soil conservation module mainly relies on the RUSLE, and this model represents an improvement over the Universal Soil Loss Equation (USLE) model but is mainly appropriate for plain areas and areas with gentle slopes.…”

Section: Strengths and Limitationsmentioning

confidence: 99%

Spatio-Temporal Change of Multiple Ecosystem Services and Their Driving Factors: A Case Study in Beijing, China

Liu

Xiao

et al. 2022

Forests

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Driven by rapid urbanization, land use patterns have undergone dramatic changes, which have in turn influenced ecosystem services (ESs). The government has implemented ecological compensation and conservation actions to mitigate this negative impact, especially in metropolises. However, whether these measures will have the desired effect remains unclear. Therefore, understanding the spatio-temporal characteristics of ESs and their driving factors are crucial for regional development. In this study, we quantified carbon storage, water yield and soil conservation services based on land use maps. A Geographical Detector (GD) was used to analyze the driving mechanisms of ES changes in Beijing from 1985 to 2020. The results showed that (1) the obvious landscape pattern changes are urbanization, afforestation and cultivated land degradation in Beijing, (2) the three services showed an increasing trend overall, but the changes were different in each period, (3) in general, land use change is the main factor affecting ESs, and the urbanization and afforestation contributed the most. These results suggest that in highly urbanized metropolises, humans can still balance the demands of regional development and ESs reasonable planning. This study highlights the importance of afforestation for ESs, the necessity of harmonizing environmental concerns and human activities, and the need to conduct ecological management in Beijing to protect the ecological environment and coordinate regional development.

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Section: Strengths and Limitationsmentioning

confidence: 99%

Spatio-Temporal Change of Multiple Ecosystem Services and Their Driving Factors: A Case Study in Beijing, China

Liu

Xiao

et al. 2022

Forests

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“…Considering the water security from the VSs' perspective offers the advantage of gaining insights into the specific water requirements of each VS and whether their corresponding water sources can provide an ample supply. Additionally, by combining the supply-demand relationship into the RWA model, a comprehensive representation of the water challenges faced by VSs in mountainous rural areas can be achieved [31][32][33]. Relying solely on regional-scale data and indicators to evaluate the water security characteristics of a given region would fail to diagnose these issues [34,35].…”

Section: Accurate Assessment and Strategic Support Of Rural Water Sec...mentioning

confidence: 99%

Village Settlements’ Perspective on Rural Water Accessibility: A Mountainous Water Security Measurement Approach

Li,

Qiao,

Liu

et al. 2024

Sustainability

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In rural planning, ensuring sustainable water management is pivotal, particularly in addressing the challenges posed by the absence of comprehensive rural water security assessments. Despite the abundance of water resources in mountainous regions, their accessibility and utilization remain significant hurdles for local populations, often hindering sustainable development. This study proposed a rural water accessibility (RWA) model, focusing on village settlements (VSs) as fundamental units for water utilization. The model examines two critical aspects of mountainous water security that are essential for sustainability: the supply–demand relation between VSs and their water sources, and the water availability to characterize difficulties in obtaining water sources in complex terrain. Using data from 1156 natural VSs in Dongchuan District, Kunming, water demand was calculated based on population and local average rural water demand per person. Springs and streams were identified as main and standby water sources, respectively. The RWA model evaluates the supply–demand balance and assesses water availability using the least-cost path (LCP) method. The results establish RWA grades, indicating water security conditions for VSs. This approach effectively identifies supply–demand relations and determines water demand gaps, facilitating targeted water management in rural areas, especially during droughts. It enables managers to accurately gauge the grade of water accessibility for each VS, allowing for prompt and tailored emergency water supply interventions. Furthermore, aggregating the RWA of each VS can provide valuable insights for devising sustainable water management strategies in mountainous regions.

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“…Water supply services (WSSs) are the storage and retention of water by ecosystems, which are vital services in watershed ecosystems [15] and play a crucial role in the water balance of watersheds and human survival and development [16]. Since the 1990s, WSSs have become a hot topic of research in watershed management [17,18]. Previously, the assessment of ESs was mainly based on land use types and combined with factor analysis [19].…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Variation and Driving Factors of Water Supply Services in the Three Gorges Reservoir Area of China Based on Supply-Demand Balance

Zhao

Wen

2022

Water

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Water supply services (WSSs) are critical to human survival and development. The Integrated Valuation of Ecosystem Services and Trade-offs (InVEST) model enables an integrated, dynamic, and visual assessment of ecosystem services at different scales. In addition, Geodetector is an effective tool for identifying the main driving factors of spatial heterogeneity of ecosystem services. Therefore, this article takes the Three Gorges Reservoir Area (TGRA), the most prominent strategic reserve of freshwater resources in China, as the study area and uses the InVEST model to simulate the spatiotemporal heterogeneity of the supply-demand balance of WSSs and freshwater security patterns in 2005, 2010, 2015, and 2018, and explores the key driving factors of freshwater security index (FSI) with Geodetector. The total supply of WSSs in the TGRA decreased by 1.05% overall between 2005 and 2018, with the head and tail areas being low-value regions for water yield and the central part of the belly areas being high-value regions for water yield. The total demand for WSSs in the TGRA increased by 9.1%, with the tail zones and the central part of the belly zones being the high water consumption areas. In contrast, the head zones are of low water consumption. The multi-year average FSI of the TGRA is 0.12, 0.1, 0.21, and 0.16, showing an upward trend. The key ecological function areas in the TGRA are high-value FSI regions, while the tail zones in the key development areas are low-value FSI regions. Industrial water consumption significantly impacts FSI, with a multi-year average q value of 0.82. Meanwhile, the q value of industrial and domestic water consumption on FSI in 2018 increased by 43.54% and 30%, respectively, compared with 2005. This study analyzes the spatiotemporal variation of WSSs and detects the drivers in the natural-economic-social perspective and innovation in ecosystem services research. The study results can guide water resource security management in other large reservoirs or specific reservoir areas.

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Evaluating water provision service at the sub-watershed scale by combining supply, demand, and spatial flow

Cited by 18 publications

References 37 publications

Spatio-Temporal Change of Multiple Ecosystem Services and Their Driving Factors: A Case Study in Beijing, China

Spatio-Temporal Change of Multiple Ecosystem Services and Their Driving Factors: A Case Study in Beijing, China

Village Settlements’ Perspective on Rural Water Accessibility: A Mountainous Water Security Measurement Approach

Spatiotemporal Variation and Driving Factors of Water Supply Services in the Three Gorges Reservoir Area of China Based on Supply-Demand Balance

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