Quantitative estimate of water yield reduction caused by forestation in a water‐limited area in northwest China

Yu, Pengtao; Krysanova, Valentina; Wang, Yanhui; Xiong, Wei; Mo, Fei; Shi, Zhou; Liu, Hailong; Vetter, Tobias; Huang, Shaochun

doi:10.1029/2008gl036744

Cited by 33 publications

(14 citation statements)

References 9 publications

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“…The simulations showed that ET estimates from forests were higher than for other land cover types (Fig. 7), similar to the findings of previous studies, which reported that conversion from crop and grass to forest can cause annual ET to increase and water yield to decrease (Twine et al, 2004;Sun et al, 2005Sun et al, , 2006Yu et al, 2009;Zhang et al, 2011b). Sun et al (2006) indicated that the average water yield reduction caused by land cover conversion varied from ∼ 50 mm yr −1 (50 % of initial) in the semiarid Loess Plateau region of northern China to ∼ 300 mm yr −1 (30 % of initial) in the tropical southern region.…”

Section: Influences Of Land Cover Change On Etsupporting

confidence: 79%

“…Sun et al (2006) indicated that the average water yield reduction caused by land cover conversion varied from ∼ 50 mm yr −1 (50 % of initial) in the semiarid Loess Plateau region of northern China to ∼ 300 mm yr −1 (30 % of initial) in the tropical southern region. According to hydrological model simulations, Yu et al (2009) declared that changing grassland into forest caused a significant reduction of water yield and an increase of ET in a watershed of the Liupan Mountains, northwest China. Based on daily meteorological and gauging stations data, Zhang et al (2011b) found that intensifying urbanization acted towards decreasing ET in the PRB.…”

Section: Influences Of Land Cover Change On Etmentioning

confidence: 99%

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Evapotranspiration and water yield over China's landmass from 2000 to 2010

Liu

Zhou

et al. 2013

Hydrol. Earth Syst. Sci.

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Abstract. Terrestrial carbon and water cycles are interactively linked at various spatial and temporal scales. Evapotranspiration (ET) plays a key role in the terrestrial water cycle, altering carbon sequestration of terrestrial ecosystems. The study of ET and its response to climate and vegetation changes is critical in China because water availability is a limiting factor for the functioning of terrestrial ecosystems in vast arid and semiarid regions. To constrain uncertainties in ET estimation, the process-based Boreal Ecosystem Productivity Simulator (BEPS) model was employed in conjunction with a newly developed leaf area index (LAI) data set, MODIS land cover, meteorological, and soil data to simulate daily ET and water yield at a spatial resolution of 500 m over China for the period from 2000 to 2010. The spatial and temporal variations of ET and water yield were analyzed. The influences of climatic factors (temperature and precipitation) and vegetation (land cover types and LAI) on these variations were assessed.Validations against ET measured at five ChinaFLUX sites showed that the BEPS model was able to simulate daily and annual ET well at site scales. Simulated annual ET exhibited a distinguishable southeast to northwest decreasing gradient, corresponding to climate conditions and vegetation types. It increased with the increase of LAI in 74 % of China's landmass and was positively correlated with temperature in most areas of southwest, south, east, and central China. The correlation between annual ET and precipitation was positive in the arid and semiarid areas of northwest and north China, but negative in the Tibetan Plateau and humid southeast China. The national annual ET varied from 345.5 mm in 2001 to 387.8 mm in 2005, with an average of 369.8 mm during the study period. The overall rate of increase, 1.7 mm yr −1 (R 2 = 0.18, p = 0.19), was mainly driven by the increase of total ET in forests. During 2006During -2009 and LAI decreased widely and consequently caused a detectable decrease in national total ET. Annual ET increased over 62.2 % of China's landmass, especially in the cropland areas of the southern Haihe River basin, most of the Huaihe River basin, and the southeastern Yangtze River basin. It decreased in parts of northeast, north, northwest, south China, especially in eastern Qinghai-Tibetan Plateau, the south of Yunnan Province, and Hainan Province. Reduction in precipitation and increase in ET caused vast regions in China, especially the regions south of Yangtze River, to experience significant decreases in water yield, while some sporadically distributed areas experienced increases in water yield. This study shows that the terrestrial water cycles in China's terrestrial ecosystems appear to have been intensified by recent climatic variability and human induced vegetation changes.

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Section: Influences Of Land Cover Change On Etsupporting

confidence: 79%

Section: Influences Of Land Cover Change On Etmentioning

confidence: 99%

Evapotranspiration and water yield over China's landmass from 2000 to 2010

Liu

Zhou

et al. 2013

Hydrol. Earth Syst. Sci.

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“…Only the crop scheduling was adjusted in the warmer climate. However, the SWIM model is able to simulate complex crop rotations and changes in land use patters, as demonstrated in several previous regional studies (Wechsung et al , 2000; Hattermann et al , 2007b; Yu et al , 2009). Therefore, possible changes in land use patterns and crop rotation could be considered in the follow‐up studies to combine them with changes in climate and to explore how changes in land use could compensate for undesirable changes in water flow dynamics.…”

Section: Discussionmentioning

confidence: 81%

Simulation of spatiotemporal dynamics of water fluxes in Germany under climate change

Huang

Krysanova

Österle

et al. 2010

Hydrological Processes

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Abstract:In most of Europe, an increase in average annual surface temperature of 0Ð8°C is observed, and a further increase is projected. Precipitation tends to increase in northern Europe and decrease in southern Europe, with variable trends in central Europe. The climate scenarios for Germany suggest an increase in precipitation in western Germany and a decrease in eastern Germany, and a shift of precipitation from summer to winter. When investigating the effects of climate change, impacts on water resources are among the main concerns. In this study, the first German-wide impact assessment of water fluxes dynamics under climate change is presented in a spatially and temporally distributed manner using the state-of-the-art regional climate model, Statistical Regional (STAR) model and the semi-distributed process-based eco-hydrological model, soil and water integrated model (SWIM). All large river basins in Germany (lower Rhine, upper Danube, Elbe, Weser and Ems) are included. A special focus of the study was on data availability, homogeneity of data sets, related uncertainty propagation in the model results and scenario-related uncertainty. After the model calibration and validation (efficiency from 0Ð6 to 0Ð9 in 80% of cases) the water flow components were simulated at the hydrotope level, and the spatial distributions were compared with those in the Hydrological Atlas of Germany. The actual evapotransipration is likely to increase in most parts of Germany, while total runoff generation may decrease in south and east regions. The results for the second scenario period 2051-2060 show that water discharge in all six rivers would be 8-30% lower in summer and autumn compared with the reference period, and the strongest decline is expected for the Saale, Danube and Neckar. Higher winter flow is expected in all of these rivers, and the increase is most significant for the Ems (about 18%). However, the uncertainty of impacts, especially in winter and for high water flows, remains high.

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“…Compared to vegetation type change, the simulation in a small basin by Yu et al . () showed that the tree species shift among mature forests dominated by larch, poplar, and birch (with a maximum LAI of 5.5, 2.4, and 3.9) did not result in a significant difference in water yield change, as observed in other regions of the world (Sahin and Hall, ; Wattenbach et al ., ).…”

Section: Findings In the Forest Structure‐function Relationsmentioning

confidence: 80%

A Water Yield‐Oriented Practical Approach for Multifunctional Forest Management and its Application in Dryland Regions of China

Wang

Xiong

Gampe³

et al. 2015

J American Water Resour Assoc

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Mountainous forest areas are vitally important for water supply in dryland regions which suffer from high erosion risk and severe water shortage. Massive afforestation, mainly for erosion control, may reduce the water yield and threaten local water supply security. Moreover, many over-dense forests due to a strict logging ban policy have produced remarkably negative impacts for both forests (e.g., low timber quality, restricted natural regeneration, and high stand instability) and water yield. To satisfy the rapidly increasing demands on water supply and other services, a practical approach for managing forest stands in a multifunctional way, which particularly addresses water yielding, is urgently required. For this purpose, we integrated the existing knowledge and experience, designed an "ideal" stand structure to represent multifunctional forest (MFF) and determined its key parameters (a ground coverage of >0.7, a canopy density around 0.7, and an H/DBH ratio (tree height [m] to the diameter at breast height [cm]) of <0.7). Moreover, a decision process for MFF stand management was recommended as: (1) investigating the site quality; (2) identifying the site-specific main forest functions; (3) quantifying the stand structure; (4) diagnosing the stand structure by comparing with the "ideal" one; and (5) arranging the functions/structure-oriented management measures. In this way, the water-yielding function can be improved and meanwhile other forest functions can be promoted.(KEY TERMS: dryland regions; forest hydrology; mountain forests; multifunctionality; best management practices; water allocation; water supply; runoff.)

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Quantitative estimate of water yield reduction caused by forestation in a water‐limited area in northwest China

Cited by 33 publications

References 9 publications

Evapotranspiration and water yield over China's landmass from 2000 to 2010

Evapotranspiration and water yield over China's landmass from 2000 to 2010

Simulation of spatiotemporal dynamics of water fluxes in Germany under climate change

A Water Yield‐Oriented Practical Approach for Multifunctional Forest Management and its Application in Dryland Regions of China

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