Remote Sensing of Watershed: Towards a New Research Paradigm

Wang, Jingzhe; Wu, Yangyi; Hu, Zhongwen; Zhang, Jie

doi:10.3390/rs15102569

Cited by 3 publications

(4 citation statements)

References 53 publications

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“…By demonstrating the effectiveness of our method in desert oases, we believe it can be applied to similar arid regions facing water scarcity challenges, such as West African Sahara Desert oases, Middle East Arabian Peninsula oases, and Xinjiang Tarim Basin oases [49]. This study also has wide application potential in the fields of water ecological protection zoning, land use planning, climate change impact assessment, water resources' management and monitoring, and global ecosystem management [52][53][54]. For example, quantitative analysis of water ecological stress can assist in delineating the boundaries of ecological protection areas, prioritizing the conservation of hotspots and vulnerable regions.…”

Section: Strengths and Limitations Of This Studymentioning

confidence: 76%

Ecological Water Requirement of Vegetation and Water Stress Assessment in the Middle Reaches of the Keriya River Basin

Wang,

Zayit,

et al. 2023

Remote Sensing

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Desert oases are vital for maintaining the ecological balance in arid regions’ inland river basins. However, fine-grained assessments of water stress in desert oasis ecosystems are limited. In our study, we aimed to evaluate the water stress in desert oasis ecosystems in the middle reaches of the Keriya River Basin, with a specific focus on their ecological functions and optimizing water resource management. We hypothesized that evapotranspiration has significant effects on ecological water consumption. First, we estimated the actual evapotranspiration (ET) and potential evapotranspiration (PET) based on the SEBS (surface energy balance system) model and remote sensing downscaling model. Then, the ecological water requirement (EWR) and ecological water stress (EWS) index were constructed to evaluate the ecological water resource utilization. Finally, we explored the influencing factors and proposed coping strategies. It was found that regions with higher ET values were mainly concentrated along the Keriya River and its adjacent farmland areas, while the lower values were observed in bare land or grassland areas. The total EWR exhibited the sequence of grassland > cropland > forest, while the EWR per unit area followed the opposite order. The grassland’s EWS showed a distinct seasonal response, with severe, moderate, and mild water shortages and water plenitude corresponding to spring, summer, autumn, and winter, respectively. In contrast, the land use types with the lowest EWS were water areas that remained in a state of water plentitude grade (0.08–0.20) throughout the year. Temperature and vegetation index were identified as the primary influencing factors. Overall, this study provides a reliable method for evaluating the EWR and EWS values of basin scale vegetation, which can serve as a scientific basis for formulating water resource management and regulation policies in the region.

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Section: Strengths and Limitations Of This Studymentioning

confidence: 76%

Ecological Water Requirement of Vegetation and Water Stress Assessment in the Middle Reaches of the Keriya River Basin

Wang,

Zayit,

et al. 2023

Remote Sensing

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“…Spatial alterations notably reveal that the proliferation of construction land predominantly encroaches upon cropland. (2) The period from 2000 to 2020 manifests a discernible spatial clustering pattern of Ecological Risk Index (ERI) values in the KRB, with an observed escalation in the degree of clustering. Dominating the LER spectrum are low-ecological-risk areas and lower-ecological-risk areas.…”

Section: Discussionmentioning

confidence: 99%

“…The overarching objective was to provide a theoretical foundation for future ecological risk control measures. Arid zone watersheds, characterized by ecologically sensitive attributes, have witnessed a surge in ecological issues in recent years [2,11]. These concerns have manifested as typical ecological and environmental problems observed globally, garnering extensive attention from various sectors of society.…”

Section: Limitations and Future Workmentioning

confidence: 99%

“…Watersheds are geographical areas with complex structures consisting of multiple systems, including ecological, economic, and social, with different functions, such as maintaining biodiversity and supporting human production, life, and culture [1][2][3]. Global climate change is becoming more pronounced as human activities intensify, and this, combined with the sensitivity and vulnerability of drylands themselves, makes them one of the most ecologically risky regions [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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Landscape Ecological Risk Assessment of Kriya River Basin in Xinjiang and Its Multi-Scenario Simulation Analysis

Li,

He,

Huang

et al. 2023

Water

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To comprehend the potential impacts of both natural phenomena and human activities on ecological risk, a thorough examination of the spatial and temporal evolution characteristics of Landscape Ecological Risk (LER) in arid river basins is imperative. This investigation holds paramount importance for the proactive prevention and mitigation of LER, as well as for the preservation of ecological security within these basins. In this scholarly inquiry, the Kriya River Basin (KRB) serves as the focal point of analysis. Leveraging three historical land use and land cover (LULC) images and incorporating a diverse array of drivers, encompassing both natural and anthropogenic factors, the study employs the PLUS model to forecast the characteristics of LULC changes within the basin under three distinct scenarios projected for the year 2030. Concurrently, the research quantitatively assesses the ecological risks of the basin through the adoption of the Landscape Ecological Risk Assessment (LERA) methodology and the Spatial Character Analysis (SCA) methodology. The results showed the following: (1) The study area is primarily composed of grassland and unused land, which collectively account for over 97% of the total land. However, there has been a noticeable rise in cropland and considerable deterioration in grassland between 2000 and 2020. The key observed change in LULC involves the transformation of grassland and unused land into cropland, forest, and construction land. (2) The overall LER indices for 2000, 2010, and 2020 are 0.1721, 0.1714, and 0.16696, respectively, showing strong positive spatial correlations and increasing autocorrelations over time. (3) Over time, human activities have come to exert a greater influence on LER compared to natural factors between 2000 and 2020. (4) In the natural development scenario (NDS), cropland protection scenario (CPS), and ecological priority scenario (EPS), the LER of KRB experienced notable variations in the diverse 2030 scenarios. Notably, the CPS exhibited the highest proportion of low-risk areas, whereas Daryaboyi emerged as the focal point of maximum vulnerability. These findings offer theoretical and scientific support for sustainable development planning in the watershed.

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Climate overtakes vegetation greening in regulating spatiotemporal patterns of soil moisture in arid Central Asia in recent 35 years

Amantai,

Meng,

Wang

et al. 2023

GIScience & Remote Sensing

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Remote Sensing of Watershed: Towards a New Research Paradigm

Abstract: Watersheds are critical natural systems that serve as the foundation for sustaining life on Earth [...]

Cited by 3 publications

References 53 publications

Ecological Water Requirement of Vegetation and Water Stress Assessment in the Middle Reaches of the Keriya River Basin

Ecological Water Requirement of Vegetation and Water Stress Assessment in the Middle Reaches of the Keriya River Basin

Landscape Ecological Risk Assessment of Kriya River Basin in Xinjiang and Its Multi-Scenario Simulation Analysis

Climate overtakes vegetation greening in regulating spatiotemporal patterns of soil moisture in arid Central Asia in recent 35 years

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