Effect of rainfall variation and landscape change on runoff and sediment yield from a loess hilly catchment in China

Wei, Wei; Chen, Liding; Zhang, Handan; Chen, Jin

doi:10.1007/s12665-014-3451-y

Cited by 50 publications

(37 citation statements)

References 49 publications

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“…Based on data collected from hydrological station, Zhao et al (2014) reported a continuous decline for the runoff depth in the Yanhe Basin since 1997, and the average value of annual runoff depth was 24.76 mm between 1997 and 2010 . The decline trend of water yield in the study period was also confirmed in the Loess Plateau (Wei et al, 2015).…”

Section: Changes In Annual Water Yield (Wy) Over Yanhe Basinsupporting

confidence: 62%

GIS-based analysis for hotspot identification of tradeoff between ecosystem services: A case study in Yanhe Basin, China

Zheng

Feng

2016

Chin. Geogr. Sci.

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Abstract:Although the quantification and valuation of ecosystem services have been studied for a long time, few studies have specifically focused on the quantification of tradeoffs between ecosystem services and tradeoff hotspots. Based on previous studies of ecosystem service assessment, we proposed a feasible method to analyze the tradeoffs between ecosystem services, including determination of their relationship, quantification of tradeoffs, and identification of tradeoff hotspots. Potential influencing factors were then further analyzed. The Yanhe Basin in the Loess Plateau was selected as an example to demonstrate the application process. Firstly, the amounts of net primary production (NPP) and water yield (WY) in 2000 and 2008 were estimated by using biophysical models. Secondly, correlation analysis was used to indicate the tradeoffs between NPP and WY. Thirdly, tradeoff index (TI NPP/WY ) was established to quantify the extent of tradeoffs between NPP and WY, and the average value of TI NPP/WY is 24.4 g/(mm·m 2 ) for the Yanhe Basin between 2000 and 2008. Finally, the tradeoff hotspots were identified. The results indicated that the area of lowest tradeoff index concentrated in the middle part of the Yanhe Basin and marginal areas of the southern basin. Map overlapping was used for preliminary analysis to seek potential influencing factors, and the results showed that shrub was the best suited for growing in the Yanhe Basin, but also was a potential influencing factor for formulation of the tradeoff hotspots. The concept of tradeoff index could also be used to quantify the degree of synergy between different ecosystem services. The method to identify the tradeoff hotspots could help us to narrow the scope of study area for further research on the relationship among ecosystem services and concentrate on the potential factors for formation of tradeoff between ecosystem services, enhance the capacity to maintain the sustainability of ecosystem.

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Section: Changes In Annual Water Yield (Wy) Over Yanhe Basinsupporting

confidence: 62%

GIS-based analysis for hotspot identification of tradeoff between ecosystem services: A case study in Yanhe Basin, China

Zheng

Feng

2016

Chin. Geogr. Sci.

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“…The mean annual pan evaporation reaches 1515 mm. The soil type belongs to calcic Cambisol (FAO, 1990), developed from loess material, with the average soil depth varying from 40 to 60 m (Chen et al, 2010;Wei et al, 2015). In this area, deep percolation can be neglected and groundwater is unavailable for vegetation growth and restoration (Yang et al, 2012).…”

Section: Site Descriptionmentioning

confidence: 99%

Effects of terracing on soil water and canopy transpiration of Pinus tabulaeformis in the Loess Plateau of China

Zhang

Wei

Chen

et al. 2017

Ecological Engineering

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a b s t r a c tTerracing has long been considered one of the most effective measures for soil water conservation and site improvement. However, few studies regarding the quantitative effects of terracing on soil water dynamics and vegetation water use efficiency were reported. To fill these knowledge gaps, in this study, soil water content and canopy transpiration from 2014 to 2015 were monitored in both terrace and slope environments in the semiarid Loess Plateau of China. Results showed that terracing had positive influences on soil water content among layers. Mean soil water content of the terrace site was 25.4% and 13.7% higher than that in the slope site in 2014 and 2015, and canopy transpiration at the terrace site increased by 9.1% and 4.8%, respectively. Canopy conductance at the terrace site was 3.9% higher than that at the slope site and it decreased logarithmically with the increase of vapor pressure deficit. This study highlighted the critical role of terracing in soil-water improvement and water-stress mitigation in semiarid environments. Thus, terracing has the potential to enhance sustainable vegetation restoration in water-limited regions.

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“…However, various studies have reported that a reduction in river runoff occurred as an outcome of the enhanced soil conservation in the Loess Plateau (Li et al, 2009;Gao et al, 2015;Wei et al, 2015;Liang et al, 2015). River runoff from the Loess Plateau contributes to the tributaries of the Yellow River; therefore, a reduction in runoff from the plateau will not only influence the provisioning of water for local residents, but will also affect the downstream flow in the Yellow River (Tang et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

The role of climatic and anthropogenic stresses on long-term runoff reduction from the Loess Plateau, China

Feng

Cheng

et al. 2016

Science of The Total Environment

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Human intervention has strongly altered patterns of river runoff. Yet, few studies have addressed the complexity and nonlinearity of the anthropogenic stresses on runoff or their interaction with climate. We study the Loess Plateau in China, whose river runoff contributes 65% of the discharge to the middle reach of the Yellow River; this landscape has been shaped by human activity and is intensively managed. Our purpose is to characterize the interactive roles of climate and human activities in defining river runoff from the Loess Plateau. Applying a transient analysis to discover the time-varying runoff trend and impact factors, we found that the average runoff in the Loess Plateau decreased continuously during the period 1961-2009 (average rate of − 0.9 mm year −1 , P b 0.001). This long-term decrease in runoff mainly occurred in three stages, with transitions in 1970, 1981 and 1996. Reduced precipitation was the main reason for the decrease in runoff over the entire study period. However, human intervention played a dominant role in creating the transition points. Water yield (i.e., the ratio of runoff to precipitation) decreased following each anthropogenic transition, causing a 56% reduction in available freshwater resources during the period 1961-2009. These findings highlight the need for studies that address the dynamic and nonlinear processes controlling the availability of freshwater resources in the light of anthropogenic influences applied under a changing climate. Such studies are essential if we are to meet the human water demand in the Loess Plateau region.

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Effect of rainfall variation and landscape change on runoff and sediment yield from a loess hilly catchment in China

Cited by 50 publications

References 49 publications

GIS-based analysis for hotspot identification of tradeoff between ecosystem services: A case study in Yanhe Basin, China

GIS-based analysis for hotspot identification of tradeoff between ecosystem services: A case study in Yanhe Basin, China

Effects of terracing on soil water and canopy transpiration of Pinus tabulaeformis in the Loess Plateau of China

The role of climatic and anthropogenic stresses on long-term runoff reduction from the Loess Plateau, China

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