Water Yield of Xitiaoxi River Basin Based on InVEST Modeling

Canqiang, Zhang; Li, Wenhua; Zhang, Biao; Liu, Moucheng

doi:10.5814/j.issn.1674-764x.2012.01.008

Cited by 61 publications

(41 citation statements)

References 7 publications

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Section: Water Balancementioning

confidence: 99%

“…Using the 176,000 km 2 area utilized by Conway, 82.86 km 3 stated in Table 1 is equivalent to 45.6 km 3 , which is similar to the findings of Conway. Bastiaanssen et al [12] also reported an estimated water production of about 298 km 3 The estimated water yield volume of each sub-watershed is presented in Figure 6. Annual average water yield is 304.51 km 3 , but water yield shows large spatial variation ranging from 0.04 km 3 in Main Nile to 82.86 km 3 in Blue Nile.…”

Section: Water Balancementioning

confidence: 99%

“…The estimated water yield volume of each sub-watershed is presented in Figure 6. Annual average water yield is 304.51 km 3 , but water yield shows large spatial variation ranging from 0.04 km 3 in Main Nile to 82.86 km 3 in Blue Nile. The highest water yield is generated from Blue Nile, Lake Victoria and Bahr el Ghazal sub-watersheds at 82.9 km 3 , 53.2 km 3 and 51.3 km 3 , respectively.…”

Section: Water Balancementioning

confidence: 99%

“…For example, fresh water is becoming a source of conflict between riparian countries due to scarcity of fresh water availability in the Nile River Basin. To make the right decision and manage water resources properly, spatial and temporal information of the different components of freshwater availability is required [3,4], but there is a lack of adequate information to support decisions in sub-Saharan Africa [5].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A New Approach to Modeling Water Balance in Nile River Basin, Africa

et al. 2018

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Abstract:The demand for calculating and mapping water yield is increasing for inaccessible locations or areas of conflict to support decision makers. Integrated Valuation of Environmental Services and Tradeoffs (InVEST) was applied to simulate basin hydrology. InVEST is becoming popular in the water modeling community due to its low requirements for input information, level of skill and model setup is available to the public domain. Estimation and mapping of water production, evapotranspiration and precipitation of the Nile River Basin have been performed by using open access data. This study utilized climate, soil and land use related data to model the key components of the water balance in the study region. Maps of the key parts of water balance were also produced. The spatial patterns of precipitation, actual evapotranspiration and water yield show sharp decline from south to northern part of the study basin while actual evapotranspiration fraction happens to the opposite. Our analysis confirms the ability of the InVEST water yield model to estimate water production capacity of a different part of a basin without flow meters.

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Section: Water Balancementioning

confidence: 99%

Section: Water Balancementioning

confidence: 99%

Section: Water Balancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A New Approach to Modeling Water Balance in Nile River Basin, Africa

et al. 2018

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“…However, quantifying the levels and values of these services has been proven difficult (Nelson et al, 2009). Currently, researchers modeled quantitatively the supply of ecosystem services in a specific area with ′ecological production functions′ -the degree of services provision depend on local critical variables (Chen et al, 2011;Zhang et al, 2012). Although these methods are superior to those with the land cover and habitat assessment benefits transfer approach (Costanza et al, 1997;Konarska et al, 2002;Zhao et al, 2004;Turner et al, 2007;Li et al, 2010), few studies focus on the complicated spatial heterogeneity influenced by climate, vegetation, soil texture, terrain and human activities, especially the hilly areas where natural resources and geographic features are highly heterogeneous.…”

Section: Introductionmentioning

confidence: 99%

Optimizing hotspot areas for ecological planning and management based on biodiversity and ecosystem services

Xiao

Ouyang

et al. 2016

Chin. Geogr. Sci.

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Abstract:The significance of biodiversity and ecosystem services are gradually recognized by human as an approach towards sustainability, so it is important to understand relationships and congruence between them to support conservation planning, especially in the hotspot areas with a prominent role in conservation. However, the management of most conservation hotspots mainly focused on biodiversity, and rarely concerned with ecosystem services. With the aim of proposing criteria for conservation strategies that contribute to the optimization of biodiversity and ecosystem services, in this study, a Geographic Information System (GIS)-based approach was designed to estimate and map the biodiversity and ecosystem services in Chongqing Municipality of China. Furthermore, the distributions of hotspot areas for biodiversity and ecosystem services were mapped based on the relationship between cumulative ecosystem services and areas. Finally the statistical analysis was processed focused on specific conservation objectives. The results showed that hotspot areas can conserve the most biodiversity but with the least ecosystem services under the conservation plans target to biodiversity conservation. In contrast, depending on the ecosystem services of interest, hotspot areas can conserve the largest ecosystem services but with the least biodiversity. By integrating biodiversity and ecosystem services into conservation plan, we found that the conservation and regeneration of these small areas, would contribute to a conservation of 44% of the biodiversity hotspot and 14%-42% of the ecosystem services hotspot. Moreover, the current nature reserve selection was not maximize the biodiversity and ecosystem services compared to integration strategy, indicating that hotspot areas conservation and selection is vital for optimization protection of biodiversity and ecosystem services, and has practical significance for natural resources and ecosystem management. Keywords: biodiversity; ecosystem services; hotspot; nature reserve; Chongqing Municipality, China Citation: Xiao Yang, Ouyang Zhiyun, Xu Weihua, Xiao Yi, Zheng Hua, Xian Chaofan, 2016. Optimizing hotspot areas for ecological planning and management based on biodiversity and ecosystem services.

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Impacts of climate change on water provisional services in Tungabhadra basin usingInVESTModel

Bejagam

Reddy

Sridhar

2021

River Research & Apps

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Water is one of the most important ecosystem services because it is essential for food and energy production. The Tungabhadra basin, located in peninsular India, has a variety of challenges, including inter-basin water-sharing issues, low agricultural productivity and value, and rising need for renewable energy production. The Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) water yield model is used to analyze the consequences of climate change on water related services such as water yield and hydropower generation in the densely populated Tungabhadra basin. The impact of climate change on water supply services is studied for the period 1971-2000 as well as the future period 2021-2040. The model is calibrated using streamflow data collected at the Bawapuram gauge station in Telangana and there is a strong correlation between observed and simulated flow. The water yield for the entire basin declined by 33 and 50% under the Representative Concentration Pathways (RCP) 4.5 and 8.5 scenarios, respectively. The RCP 4.5 scenario reduces hydropower production and its Net Present Value (NPV) by 41 to 59%, whereas the RCP 8.5 scenario reduces production and NPV by 56 to 67%. The assessment of ecosystem services at the catchment scale revealed that the basin could be vulnerable to climate change due to a dramatic drop in ecosystem services. The methodology developed in this study can be applied to other river basins where quantifying ecosystem services is critical.

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Water Yield of Xitiaoxi River Basin Based on InVEST Modeling

Cited by 61 publications

References 7 publications

A New Approach to Modeling Water Balance in Nile River Basin, Africa

A New Approach to Modeling Water Balance in Nile River Basin, Africa

Optimizing hotspot areas for ecological planning and management based on biodiversity and ecosystem services

Impacts of climate change on water provisional services in Tungabhadra basin usingInVESTModel

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