Regional differences of water regulation services of terrestrial ecosystem in the Tibetan Plateau: Insights from multiple land covers

Zhang, Yongyong; Hou, Jinjin; Ma, Guanghui; Zhai, Xiaoyan; Lv, Aifeng; Wang, Wei; Wang, Zhonggen

doi:10.1016/j.jclepro.2020.125216

Cited by 8 publications

(3 citation statements)

References 43 publications

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“…This method mainly consists of three core steps: using nearest neighbor propagation (AP) clustering to extract the annual periodic joint fluctuation characteristics of runoff and the provincial electricity prices; using a double chain Markov model to describe the seasonal fluctuations of runoff within a year and the differences in annual abundance, evenness, and dryness; and extracting the correlation between provincial and regional electricity prices through the Copula model. The main process of this method is shown in the following figure, where the de-periodic runoff series, typical runoff series, and de-periodic provincial electricity price series respectively represent the annual differences in runoff, the seasonal changes in runoff, and the impact of removing runoff on electricity price correlation [29][30][31].…”

Section: Strategy For Describing Multiple Uncertainties In Runoff And...mentioning

confidence: 99%

Issues and Strategies for the Dispatching and Trading of the Three Gorges Large Hydropower System

Wang,

Guo,

Shen

et al. 2023

Energies

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China’s electricity market reform has posed a real challenge to the large-scale hydropower system. Taking the world’s largest watershed hydropower system, the Three Gorges large hydropower system (TGLHS), as the engineering background, this study analyzes the issues and strategies of dispatching and trading in the electricity market. The analysis indicates that the TGLHS exhibits unique difficulties because of transprovincial and transregional power transmission. Major issues including the multi-dimensional and multi-time-scale nested allocation of hydropower energy, the bidding and performance of cascaded hydropower plants in multiple electricity markets, as well as multiple uncertainties in the runoff; electricity prices in multiple markets are also elaborated upon. The corresponding suggested strategies are proposed to cope with the aforementioned issues: (1) for multi-dimensional and multi-scale nested allocation problems, it is necessary to comprehensively consider monthly market transactions and priority generation plans, and establish a profit maximization model; (2) propose a bidding decision-making linkage and segmented bidding optimization model for cascades upstream and downstream hydropower stations; (3) construct a model for decomposing the annual and monthly planned electricity consumption curves and developing operational plans for giant cascade power stations that are suitable for cross-provincial and cross-regional power transmission and transformation; (4) a runoff, electricity price, and market distribution model has been proposed, laying the foundation for further research on multi-scale optimization models for hydropower. Finally, prospects for research on the participation of large-scale hydropower systems in the electricity market are summarized, expecting to promote the marketization of large cascaded hydropower systems. The dispatching and trading of the TGLHS implies that it is important and necessary to explore market theories and methods considering hydropower characteristics and operation needs.

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Section: Strategy For Describing Multiple Uncertainties In Runoff And...mentioning

confidence: 99%

Issues and Strategies for the Dispatching and Trading of the Three Gorges Large Hydropower System

Wang,

Guo,

Shen

et al. 2023

Energies

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“…These major national needs and disciplinary frontiers will further promote multi-disciplinary ecohydrological research in China, including the integration of natural and societal disciplines, and comprehensive investigations of the influence and feedback of economic development and human activities on ecohydrological processes. As a key component of ecological civilization construction in China, the water regulation capacity of the terrestrial ecosystem and its valuation are important for the sustainable management of ecosystems and natural capital (Zhang et al, 2021). They are also research hotspots in the disciplines of ecology, hydrology, ecological economics, and environmental economics.…”

Section: Multidisciplinary Research On Ecohydrology Disciplinementioning

confidence: 99%

A review of the ecohydrology discipline: Progress, challenges, and future directions in China

Xia

Zhang

et al. 2021

J. Geogr. Sci.

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In recent decades, the ecohydrology discipline was developed to provide theoretical and technical foundations for the protection and restoration of complex ecological systems (e.g., mountains, rivers, forests, farmlands, and lakes), and to further ecological civilization construction and green development in China. In this study, the progress and challenges of the ecohydrology discipline are elaborated, and the future development directions are proposed according to international scientific frontiers and national ecological civilization construction demands. Overall, the main discipline directions are to develop new ecohydrological monitoring methods, to comprehensively understand ecohydrological mechanisms and their basic theories, to promote integration of multi-scale and multi-variable models by considering both terrestrial and aquatic ecosystems, and to encourage multidisciplinary integration, particularly with the social sciences. Furthermore, the future research interests in China include: combining multi-source information, constructing comprehensive monitoring systems, studying spatiotemporal patterns of key ecohydrological variables and their variation characteristics, developing integrated models of ecological, hydrological, and economic processes, estimating their uncertainty; and conducting interdisciplinary studies that include the natural and social sciences. The application prospects in China are further explored for a variety of ecosystems, including forests, grasslands, rivers, lakes, wetlands, farmlands, and cities. This study will provide a reference to support the development of the ecohydrology discipline in China, and will provide a solid theoretical and technical foundation for the implementation of national ecological civilization construction.

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“…Recent advances in remote-sensing technology and hydroecological modeling have led to an increasing number of studies examining and evaluating ecosystem services on larger scales through the utilization of hydrological models [11][12][13]. The Soil and Water Assessment Tool (SWAT), which is widely applied in water-related ecosystem-service projects [14], enables the quantification of water in a horizontal direction.…”

Section: Introductionmentioning

confidence: 99%

Influence of Grain on Green Patterns and Their Underlying Surface Characteristics on Water Conservation: A Case Study in a Semiarid Area

Pan,

Wang,

Zuo

et al. 2023

Forests

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Water-conservation enhancement is a crucial objective of regional ecological restoration projects in arid and semiarid areas, and it is significantly influenced by land use/cover change (LUCC). The Grain for Green Project (GFGP) is a common strategy for ecological restoration. However, insufficient attention has been paid to the impact of reforestation patterns and the underlying surface characteristics on the effectiveness of GFGP in enhancing water conservation. In this study, a Soil and Water Assessment Tool (SWAT) scenario-based simulation was conducted to assess changes in water-conservation depth (WCD) in the Zhangjiakou section of the Guanting Reservoir basin. Redundancy analysis (RDA) and a mixed linear model were employed to determine the effects of different reforestation patterns and their underlying slope gradient and soil-type characteristics on WCD variation. The results showed that there were differences in the effect characteristics of reforestation patterns and different vegetation types on WCD changes; the effectiveness of increased water conservation is associated with the adaptation of reforestation plants to underlying characteristics. Returning farmland to evergreen forests was the most effective approach, leading to a relative increase in WCD that was 2.6 times greater than the relative increase in total WCD. WCD decreased with the slope gradient, with WCD decreasing by 0.2 mm for every 1° increase in slope. Converting grassland to evergreen forests on slopes greater than 16.19° and converting deciduous forests to grassland on slopes less than 16.19° would further increase WCD, promoting the synergistic development of ecosystem services. This study provides insights into the development of more efficient reforestation strategies to enhance water conservation in a complex terrain area.

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Regional differences of water regulation services of terrestrial ecosystem in the Tibetan Plateau: Insights from multiple land covers

Cited by 8 publications

References 43 publications

Issues and Strategies for the Dispatching and Trading of the Three Gorges Large Hydropower System

Issues and Strategies for the Dispatching and Trading of the Three Gorges Large Hydropower System

A review of the ecohydrology discipline: Progress, challenges, and future directions in China

Influence of Grain on Green Patterns and Their Underlying Surface Characteristics on Water Conservation: A Case Study in a Semiarid Area

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