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Assessing impacts of different land use scenarios on water budget of Fuhe River,China using SWAT model

International Journal of Agricultural and Biological Engineering 2015年第3期8卷 95-109页

作者： Tao Can Chen Xiaoling Lu Jianzhong Philip W.Gassman Sauvage Sabine Sanchez Pérez José-Miguel State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhan 430079China Key Laboratory of Poyang Lake Wetland and watershed Research Ministry of EducationJiangxi Normal UniversityNanchang 310022China Center for Agricultural and Rural Development 560A Heady HallIowa State UniversityAmesIowa 50011-1070USA University of Toulouse INPTUPSLaboratoire Ecologie Fonctionnelle et Environnement(EcoLab)Avenue de l’Agrobiopole31326 Castanet Tolosan CedexFrance CNRS EcoLab31326 Castanet Tolosan CedexFrance

The Soil and water Assessment Tool(SWAT)model was used to assess the impacts of different land use scenarios on hydrological processes in the Fuhe watershed in Poyang Lake Basin,East China.A total of 12 model parameters were calibrated with observed monthly runoff data for 1982-1988 and validated for 1991-1998 for baseline *** baseline test results of R2 and Nash-Sutcliffe model efficiency(NSE)values ranged between 0.88 and 0.94 across the calibration and validation periods,indicating that SWAT accurately replicated the Fuhe watershed *** different land use scenarios were then simulated with the model,focusing on the impacts of land use change on the hydrology of the *** results of hypothetical scenario simulations revealed that surface runoff declined while groundwater recharge and evapotranspiration(ET)increased,as forest land,agriculture land and/or grassland areas increased,as well as when paddy field and urban areas *** results further showed that forest land has a higher capacity to conserve the water as compared to pasture *** results of the real scenario simulations revealed that urbanization is the strongest contributor to changes in surface runoff,water yield,and *** can be considered as a potential major environmental stressor controlling hydrological components.

关键词： SWAT model land use streamflow water budget scenario simulation Poyang Lake Fuhe watershed

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Monthly water budget of Small Basin in Northern of Loess Plateau, China

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Journal of Northeast Agricultural University(English Edition) 2010年第4期17卷 14-19页

作者： HUANG Jinbai HINOKIDANI Osamu YASUDA Hiroshi Kimura Reiji ZHENG Jiyong College of water Conservancy and Building Engineering Northeast Agricultural University Harbin 150030 China Faculty of Engineering Tottori University Tottori 680-8552 Japan Arid Land Research Center Tottori University Tottori 680-0001 Japan Sod and water Conservation Chinese Academy of Sciences ＆ Ministry of Water Resources P.R. China Yangling 712100 Xi＇an China

The objective of this study was to analyze the water budget of a small basin in the northern of Loess Plateau. A small basin, Liudaogou in the northern Loess Plateau was chosen as the study area. The numerical calculation of surface runoff was applied to results of the field survey, and components of monthly water budget were estimated. The unit area of 1 km2 was selected as the index area for the estimation. A component of habitant water consumption was added to the water budget to consider the contribution of human activity. Results indicated that the water storage was negative in May, June and July while the annual amount was approximately 0.0. Evaportanspiration attained maximum in August and its annual total accounted for 74.2% of annual precipitation. Results of this study are significant for the sustainable water conservation and utilization in the northern of Loess Plateau where annual water resources are relatively deficient.

关键词： Loess Plateau Liudaogou Basin water budget

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water budgets of Tropical Cyclones： Three Case Studies

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Advances in Atmospheric Sciences 2013年第2期30卷 468-484页

作者： WU Wei CHEN Jilong HUANG Ronghui Center for Monsoon System Research Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100190 University of Chinese Academy of Sciences Beijing 100049

In this study, three tropical cyclones （TCs） that passed through the Taiwan Strait were analyzed; our results show that precipitation is not directly related to the intensity of TCs. From the perspective of water budget, moisture flux convergence was dominant and contributed -70% of the moisture for TC precipitation over the ocean and almost all over the land, especially inside the TC circulation. Their spatial distributions were also similar. Evaporation contributed -30% of the moisture for precipitation over the ocean but changed little with the time. Moisture flux convergence can be divided into two parts： wind convergence and moisture advection. Moisture flux convergence was mostly due to wind convergence, which was dominant in the southwestern quadrants of the TCs. Moisture advection was located in the northern area, and becomes relatively important when the TCs approached the land. The moisture flux convergence and its two parts varied during TC movement, with strengthening and contraction of moisture convergence present near landfall. The vertical structure of the three TC eases all indicated that the moisture convergence was mainly confined to the lower atmosphere under 800 hPa and a weak divergence region was present in the middle troposphere around 550 hPa.

关键词： tropical cyclones water budget moisture convergence precipitation evaporation

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Hydrological functioning of forested catchments,Central Himalayan Region,India

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Forest Ecosystems 2020年第4期7卷 833-850页

作者： Nuzhat Qazi Forest Research Institute DehradunUttarakhand 248006India National Institute of Hydrology RoorkeeUttarakhand 247667India

Background:Central Himalayan forested catchments provide fresh water supply and innumerable ecosystem services to millions of ***,the understanding of linkages between forests and water is very crucial for availability and quality of water at catchment ***,the present study aims to understand the hydrological response of two forested catchments(namely,Arnigad and Bansigad)in the Central Himalayan ***:Threeyears’data(March,2008 to February,2011)were collected from meteorological and hydrological stations in Arnigad and Bansigad *** present paper describes the mean hydrological response of these forested catchments investigated through detailed field ***:The annual hyetograph analysis revealed that the rainfall at both the catchments was highly seasonal,and wetperiod(June–September)plays a key role in catchment *** of rainfall threshold of^200 mm(~10%of annual rainfall)significantly increased streamflow generation in both *** Arnigad,the stream was perennial with a mean baseflow of^83mm per month(~6%of annual baseflow)whereas,Bansigad had greater seasonality due to lack of streamflow during the prewetperiod(March–May).Separation of hydrographs in Arnigad and Bansigad catchments ***(6%and 31%,respectively)and baseflow(50%and 32%,respectively)helped to understand the probability of flooding during wetperiod and drought during *** forest ecosystem in Arnigad displayed healthier hydrological functioning in terms of reduced stormflow(82%),and enhanced baseflow(52%),soil moisture(13%),steady infiltration rate(22%)and lag time(~15 min)relative to *** enhanced values indicated soil capability to store water in the forested catchment(Arnigad)and helped to understand the volume of water(discharge)that was available during *** lower denudation rate at Arnigad by 41%resulted in decreased suspended sediment(18%)and bed load(75%)compared to ***

关键词： Forested catchments Stormflow Baseflow Soil moisture Sediment transport water budget

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Quantifying groundwater recharge and discharge for the middle reach of Heihe River of China using isotope mass balance method

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Journal of Groundwater Science and Engineering 2021年第3期9卷 225-232页

作者： Han Zhang Zong-yu Chen Chang-yuan Tang Key Laboratory of Groundwater Sciences and Engineering Ministry of Natural ResourcesZhengding 050803Hebei ProvinceChina. Institute of Hydrogeology and Environmental Geology Chinese Academy of Geological SciencesShijiazhuang 050061China. Chiba University Chiba 2718510Japan.

The study aims to identify a suitable site for open and bore well in a farmhouseusing ground magnetic survey in south *** also aims to define depth to granitoid and structural elements which traverse the selected *** data(n=84)measured,processed and interpreted as qualitative and *** results of total magnetic intensities indicate that the area is composed of linear magnetic lows trending NE-SW direction and circular to semi-circular causative *** magnetic values ranged from-137 nT to 2345 nT with a mean of 465 *** to equator shows significant shifting of causative bodies in the southern and northern *** signal map shows exact boundary of granitic *** directional filter has brought out structural element trending NE-SW *** of individual profile brought to light structurally weak zone between 90 m and 100 m in all the profile *** decrease of magnetic values from 2042 nT to 126 nT noticed in profile line 6 between 20 m and 30 m indicates fault *** breaks obtained from these maps were visualized,interpreted and identified two suitable sites for open and bore *** averaged power spectrum estimates depth of shallow and deep sources in 5 m and 50 m,*** method has also been applied to estimate depth of granitoid and structural elements using structural indexes 0,1,2,and 3 and found depth ranges from90 *** indicates magnetic method is one of the geophysical methods suitable for groundwater exploration and site selection for open and borewells.

关键词： Arid region Stable isotopes water budget Surface water-ground water interaction

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中国陆地生态系统年实际蒸散量的空间格局及其影响因素（英文）

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Journal of Geographical Sciences 2016年第10期26卷 1391-1411页

作者：郑涵于贵瑞王秋凤朱先进何洪林王艳芬张军辉李英年赵亮赵风华石培礼王辉民闫俊华张一平 Synthesis Research Center of Chinese Ecosystem Research Network Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources Research CAS State Key Laboratory of Loess and Quaternary Geology Institute of Earth Environment CAS University of Chinese Academy of Sciences Institute of Applied Ecology CAS Northwest Institute of Plateau Biology CAS South China Botanical Garden CAS Key Lab of Tropical Forest Ecology Xishuangbanna Tropical Botanical Garden CAS

Understanding the spatial variation in annual actual evapotranspiration （AET） and its influencing factors is crucial for a better understanding of hydrological processes and water resources management. By synthesizing ecosystem-level observations of eddy-covariance flux sites in China （a total of 61 sites）, we constructed the most complete AET dataset in China up to now. Based on this dataset, we quantified the statistic characteristics of AET and water budgets （defined as the ratio of AET to annual mean precipitation （MAP）, AET/MAP） of terrestrial ecosystems in China. Results showed that AET differed significantly among both different vegetation types and climate types in China, with overall mean AET of 534.7＋232.8 mm yr1. AET/MAP also differed significantly among different climate types, but there were no distinct differences in AET/MAP values across vegetation types, with mean AET/MAP of 0.82＋0.28 for non-irrigated ecosystems. We further investigated how the main climatic factors and vegetation attributes control the spatial variation in AET. Our findings revealed that the spatial variation of AET in China was closely correlated with the geographical patterns of climate and vegetation, in which the effects of total annual net radiation （Ro）, MAP and mean annual air temperature （MAT） were dominant. Thus, we proposed an empirical equation to describe the spatial patterns of AET in China, which could explain about 84% of the spatial variation in AET of terrestrial ecosystems in China. Based on the constructed dataset, we also evaluated the uncertainties of five published global evapotranspiration products in simulating site-specific AET in China. Results showed that large biases in site-specific AET values existed for all five global evapotranspiration products, which indicated that it is necessary to involve more observation data of China in their parameterization or validation, while our AET dataset would provide a data source for it.

关键词： evapotranspiration water budget spatial variation eddy covariance terrestrial ecosystem China-FLUX

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