GIS-based hydrologic modeling in the Qinhuai River Basin associated with land use changes

Rui, Hanyi; Du, Jinkang; Zheng, Dapeng; Li, Qian

doi:10.1109/geoinformatics.2011.5980672

Cited by 2 publications

(3 citation statements)

References 9 publications

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“…In China, it is believed that a decline of pressure gradient, climate warming, and decreasing monsoon circulation commonly reduce atmospheric circulation and WS (Zhang et al 2009. Additionally, the urbanization over QRB (Rui et al 2011;Du et al 2012;Hao et al 2015b) may cause the negative effects on the WS variation (Li et al 2018).…”

Section: Temporal Trends Of Meteorological Variablesmentioning

confidence: 99%

“…On the regional scale, RH was negatively correlated with the rapid warming (Van Wijngaarden and Vincent 2005;You et al 2015) and positively correlated with the change in precipitation (Jin et al 2009). Moreover, the rapid urbanization over QRB (Rui et al 2011;Du et al 2012;Hao et al 2015b) reduced green spaces and increased surface runoff (Ying et al 2007;Wypych 2010). Hao et al (2015b) also found the loss of extensive paddy rice field which would lead to the decreased actual ET.…”

Section: Temporal Trends Of Meteorological Variablesmentioning

confidence: 99%

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Climatic Controls on Watershed Reference Evapotranspiration Varied during 1961–2012 in Southern China

Qin

Hao

Sun

et al. 2018

J American Water Resour Assoc

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Reference evapotranspiration (ETo) is an important hydrometeorological term widely used in understanding and projecting the hydrological effects of future climate and land use change. We conducted a case study in the Qinhuai River Basin that is dominated by a humid subtropical climate and mixed land uses in southern China. Long‐term (1961–2012) meteorological data were used to estimate ETo by the FAO‐56 Penman–Monteith model. The individual contribution from each meteorological variable to the trend of ETo was quantified. We found basin‐wide annual ETo decreased significantly (p < 0.05) by 3.82 mm/yr during 1961–1987, due to decreased wind speed, solar radiation, vapor pressure deficit (VPD), and increased relative humidity (RH). However, due to the increased VPD and decreased RH, the ETo increased significantly (p < 0.05) in spring, autumn, and annually at a rate of 2.55, 0.56, and 3.16 mm/yr during 1988–2012, respectively. The aerodynamic term was a dominant factor controlling ETo variation in both two periods. We concluded the key climatic controls on ETo have shifted as a result of global climate change during 1961–2012. The atmospheric demand, instead of air temperature alone, was a major control on ETo. Models for accurately predicting ETo and hydrological change under a changing climate must include VPD in the study region. The shifts of climatic control on the hydrological cycles should be considered in future water resource management in humid regions.

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Section: Temporal Trends Of Meteorological Variablesmentioning

confidence: 99%

Section: Temporal Trends Of Meteorological Variablesmentioning

confidence: 99%

Climatic Controls on Watershed Reference Evapotranspiration Varied during 1961–2012 in Southern China

Qin

Hao

Sun

et al. 2018

J American Water Resour Assoc

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“…Remote sensing has multi-resolution, multispectral and multi-temporal data, transforming them into information valuable for understanding the processes and monitoring of land use/land cover changes. GIS technology includes an array of powerful tools for entering, analyzing and displaying digital data from the various sources necessary to detect urban phenomena changes, identification and dataset development as well as an important tool in the analysis of parameters such as land cover, land use, soils, topographical and hydrological conditions [13,20,[23][24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Estimating the Effect of Urban Growth on Annual Runoff Volume Using GIS in the Erbil Sub-Basin of the Kurdistan Region of Iraq

Hameed

2017

Hydrology

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Abstract:The growth and spread of impervious surfaces within urbanizing catchment areas pose signiificant threats to the quality of natural and built-up environments. Impervious surfaces prevent water infiltration into the soil, resulting in increased runoff generation. The Erbil Sub-basin was selected because the impervious cover is increasing rapidly and is affecting the hydrological condition of the watershed. The overall aim of this study is to examine the impact of urban growth and other changes in land use on runoff response during the study period of 1984 to 2014. The study describes long-term hydrologic responses within the rapidly developing catchment area of Erbil city, in the Kurdistan Region of Iraq. Data from six rainfall stations in and around the Erbil Sub-basin were used. A Digital Elevation Model (DEM) was also used to extract the distribution of the drainage network. Historical levels of urban growth and the corresponding impervious areas, as well as land use/land cover changes were mapped from 1984 to 2014 using a temporal satellite image (Landsat) to determine land use/land cover changes. Land use/land cover was combined with a hydrological model (SCS-CN) to estimate the volume of runoff from the watershed. The study indicates that the urbanization of the watershed has increased the impervious land cover by 71% for the period from 1984 to 2004 and by 51% from 2004 to 2014. The volume of runoff was 85% higher in 2014 as compared to 1984 due to the increase in the impervious surface area; this is attributed to urban growth. The study also points out that the slope of the watershed in the Erbil sub-basin should be taken into account in surface runoff estimation as the upstream part of the watershed has a high gradient and the land is almost barren with very little vegetation cover; this causes an increase in the velocity of the flow and increases the risk of flooding in Erbil city.

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GIS-based hydrologic modeling in the Qinhuai River Basin associated with land use changes

Cited by 2 publications

References 9 publications

Climatic Controls on Watershed Reference Evapotranspiration Varied during 1961–2012 in Southern China

Climatic Controls on Watershed Reference Evapotranspiration Varied during 1961–2012 in Southern China

Estimating the Effect of Urban Growth on Annual Runoff Volume Using GIS in the Erbil Sub-Basin of the Kurdistan Region of Iraq

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