Assessing the effect of EWDP on vegetation restoration by remote sensing in the lower reaches of Tarim River

Bao, Anming; Huang, Yanyan; Ma, Yonggang; Guo, Hui; Wang, Yongqin

doi:10.1016/j.ecolind.2016.11.007

Cited by 87 publications

(41 citation statements)

References 27 publications

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“…A digital elevation model (DEM) with 90 × 90 m resolution, land use/cover, and soil types were used to set up the hydrological model. Land use and land cover map in 2010 based on Landsat Thematic Mapper (TM) images were processed by the Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences (XIGE) [26]. Four land cover types (i.e., meadow, forest, rock, and surface water body) were detected in the Kaidu watershed and used for hydrological simulations.…”

Section: Data Availabilitymentioning

confidence: 99%

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Climate Change Impacts on Extreme Flows Under IPCC RCP Scenarios in the Mountainous Kaidu Watershed, Tarim River Basin

Huang

et al. 2020

Sustainability

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In the 21st century, heavier rainfall events and warmer temperatures in mountainous regions have significant impacts on hydrological processes and the occurrence of flood/drought extremes. Long-term modeling and peak flow detection of streamflow series are crucial in understanding the behavior of flood and drought. This study was conducted to analyze the impacts of future climate change on extreme flows in the Kaidu River Basin, northwestern China. The soil water assessment tool (SWAT) was used for hydrological modeling. The projected future precipitation and temperature under Intergovernmental Panel on Climate Change (IPCC) representative concentration pathway (RCP) scenarios were downscaled and used to drive the validated SWAT model. A generalized extreme value (GEV) distribution was employed to assess the probability distribution of flood events. The modeling results showed that the simulated discharge well matched the observed ones both in the calibration and validation periods. Comparing with the historical period, the ensemble with 15 general circulation models (GCMs) showed that the annual precipitation will increase by 7.9-16.1% in the future, and extreme precipitation events will increase in winter months. Future temperature will increase from 0.42 • C/10 a to 0.70 • C/10 a. However, with respect to the hydrological response to climate change, annual mean runoff will decrease by 21.5-40.0% under the mean conditions of the four RCP scenarios. A reduction in streamflow will occur in winter, while significantly increased discharge will occur from April to May. In addition, designed floods for return periods of five, 10 and 20 years in the future, as predicted by the GEV distribution, will decrease by 3-20% over the entire Kaidu watershed compared to those in the historical period. The results will be used to help local water resource management with hazard warning and flood control.

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Section: Data Availabilitymentioning

confidence: 99%

“…Under the dual influence of climate change and human activities, the hydrological cycle in the headwater regions has been severely changed. Indeed, some upstream rivers have completely ceased flowing [26]. Currently, only four rivers, namely the Kaidu, Aksu, Hotan, and Yarkand Rivers, flow to the main stream of the Tarim River [27].…”

Section: Introductionmentioning

confidence: 99%

Climate Change Impacts on Extreme Flows Under IPCC RCP Scenarios in the Mountainous Kaidu Watershed, Tarim River Basin

Huang

et al. 2020

Sustainability

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“…The fact that the ‘problem' is caused upstream suggests a closer look at what is happening upstream. Should we reforest certain areas, should we change land use (Baoa et al, ), should we have built water and salt interception schemes? Fortunately, recent advances in aerial photography with drones and in the use of satellite remote‐sensing applications will allow us to determine the need for drainage in more holistic ways than before.…”

Section: Designmentioning

confidence: 99%

Present Status and Future Prospects of Drainage in Relation to the Icid Vision 2030

Vlotman¹

2020

Irrigation and Drainage

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The International Commission on Irrigation and Drainage (ICID) regularly updates the areas drained and irrigated in the world based on information provided via their national committees (www.icid.org). Modern land drainage planning, design and implementation include making drainage environmentally sustainable and achieve this through enhanced water balance assessments at regional and field scale, prevent excess water except for leaching salts, support ecological water requirements, and then, if any excess water remains, design a drainage system. The less water mobilized through the root zone, the better the quality of drainage water. No matter how efficiently our crops are watered, sooner or later we need to have a well-functioning drainage system for complete in-field water management. Agricultural land drainage should include various approaches to assessment and prevention of waterlogging and salinity problems, consider the water-food-energy nexus approach and give due attention to social, environmental and financial considerations (triple bottom line, TBL) for the best sustainable results. The most important consideration to be included in drainage system planning and design is the consideration of cause and effect. Waterlogging and salinity problems are the effect of something that is occurring most likely upstream; the cause.

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“…The research on ecological water conveyance in the Heihe River basin mainly focuses on the influence of the water conveyance on the vegetation [32,33], the characteristics of the water resources in the basin [34], and the comprehensive management of the water eco-economic system [35]. Research on the lower reaches of the Tarim River mainly focuses on the impacts of the ecological water conveyance on the distribution, structural characteristics, physiological and ecological characteristics of the vegetation [36][37][38][39]. Some scattered cases studying ecosystem service value and environmental quality in the lower reaches of the Tarim River exist [40,41].…”

Section: Introductionmentioning

confidence: 99%

Do Ecosystem Service Value Increase and Environmental Quality Improve due to Large–Scale Ecological Water Conveyance in an Arid Region of China?

et al. 2019

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With the rapid development of the economy and the intensification of human activities, ecological systems have been degraded, especially in arid areas. The lower reaches of the Tarim River represent a typical arid area in China. Since 2000, the Chinese government has been heavily investing in the protection and restoration of the natural ecological environment of the lower reaches of the Tarim River. In this study, we aimed to resolve two key scientific issues: (1) reveal the changing characteristics of land-use in the region and identify the changes in ecosystem service value caused by these land-use changes and (2) evaluate whether the environmental quality has improved or worsened. The objective of this study is to verify whether the ecological water conveyance project promotes an increase in the ecosystem service value, with an improvement in the ecological environment, to thereby provide references for the evaluated effects of ecological water conveyance for the management of water resources. In this way, economic development can support environmental protection. Thus, the economy can be sustainably developed. Hence, based on the remote sensing data of land-use in 1990, 2000, 2010, and 2016, with the value coefficients proposed by Constanza in 1997 and changing characteristics in the land-use, the ecological service value, and environmental conditions from 1990 to 2016 were analysed. According to our results, from 1990 to 2016, the ecosystem service value has increased substantially, indicating that the benefits of ecological water conveyance were significant. The environmental condition index increased by 21.14%, showing that the ecological environment has improved. However, the environmental quality remained low. In the future, we should formulate plans for reasonable land-use that control the replacement of woodlands and grasslands with farmlands and construction. The results of this study provide a scientific basis and practical guide for restoring inland river ecosystems in arid regions.

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Assessing the effect of EWDP on vegetation restoration by remote sensing in the lower reaches of Tarim River

Cited by 87 publications

References 27 publications

Climate Change Impacts on Extreme Flows Under IPCC RCP Scenarios in the Mountainous Kaidu Watershed, Tarim River Basin

Climate Change Impacts on Extreme Flows Under IPCC RCP Scenarios in the Mountainous Kaidu Watershed, Tarim River Basin

Present Status and Future Prospects of Drainage in Relation to the Icid Vision 2030

Do Ecosystem Service Value Increase and Environmental Quality Improve due to Large–Scale Ecological Water Conveyance in an Arid Region of China?

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