Pub Date : 2012-11-12DOI: 10.1109/GIWRM.2012.6349535
Yanping Liu, Jianjun Cao
To predict the influencing factors in the groundwater resources changes is one of preliminary work in predicting of the groundwater resource's changes, which plays an important role in using groundwater reasonably in arid areas, such as Minqin Oasis. This study uses a so-called R/S Analysis method to predict three major factors that affect the groundwater resources change in Minqin Oasis i.e. population, grain yield and the quantity of the upstream inflow. The results show that the Hurt index of the time series about the population in the Oasis is 0.733, which indicates that the future general changing trend of population in the Oasis is an increasing trend as the same as that in the period from 1960 to 2010. The Hurt index of the time series about grain yield in this Oasis is 0.901, which states that its future changing trend has a stronger long-term positive correlation with the increasing trend in the period from 1960 to 2010. In other words, its' future general changing trend is also increasing. The Hurt index of the quantity of upstream inflow in the Oasis is 0.916, which shows that its future general changing trend has a very strong long-term positive correlation with the decreasing trend in the period from 1960 to 2010, presenting a decreasing trend.
{"title":"R/S-based trend prediction of the factors that affect the groundwater resources changes in Minqin Oasis","authors":"Yanping Liu, Jianjun Cao","doi":"10.1109/GIWRM.2012.6349535","DOIUrl":"https://doi.org/10.1109/GIWRM.2012.6349535","url":null,"abstract":"To predict the influencing factors in the groundwater resources changes is one of preliminary work in predicting of the groundwater resource's changes, which plays an important role in using groundwater reasonably in arid areas, such as Minqin Oasis. This study uses a so-called R/S Analysis method to predict three major factors that affect the groundwater resources change in Minqin Oasis i.e. population, grain yield and the quantity of the upstream inflow. The results show that the Hurt index of the time series about the population in the Oasis is 0.733, which indicates that the future general changing trend of population in the Oasis is an increasing trend as the same as that in the period from 1960 to 2010. The Hurt index of the time series about grain yield in this Oasis is 0.901, which states that its future changing trend has a stronger long-term positive correlation with the increasing trend in the period from 1960 to 2010. In other words, its' future general changing trend is also increasing. The Hurt index of the quantity of upstream inflow in the Oasis is 0.916, which shows that its future general changing trend has a very strong long-term positive correlation with the decreasing trend in the period from 1960 to 2010, presenting a decreasing trend.","PeriodicalId":6394,"journal":{"name":"2012 International Symposium on Geomatics for Integrated Water Resource Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82243017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-12DOI: 10.1109/GIWRM.2012.6349561
Mei-ling An, Bo Zhang
The Upper Reaches of the Heihe River is the water source of the whole Basin, in which the way of land use different from the middle and lower reaches of the Heihe River because of particular natural features and human activities. The variation processes of the land use structure in the Upper Reaches of the Heihe River have an important effect on water resources and ecosystem of the whole watershed. The methods of remote sensing image analysis, transfer matrix and principal component analysis were employed in this paper to analyze quantitatively the course of spatial and temporal variations of three main types that woodland, grassland and cultivated land in mountain area of the Upper Reaches of the Heihe River Basin. The artificial motivation of land use changes in the study area had been indicated. The results showed: (1) the variation stages of land use demonstrated clearly in the study area, in which three kinds of land use types as cultivated land, grassland and forest land had transformed obviously in two stages of 1987-1999 and 1999-2010, that is, the area of forest decreased continuously, the area of grassland decreased at the first stage and then increased at the second stage, the cultivated land increased sharply; (2) spatial variation of single land of three types was remarkable, the distribution of forest land presented acreage in the eastern part more large than western and southern less than northern part; the area of grassland were the largest, and distribution patterns of it display more in eastern and more in south; the area of cultivated land were the least, they mainly distributed along the valleys of the Heihe River, and (3) the forest and grassland degraded seriously. The main causes of land degradation in the area under study led by population increase with excessive use of land.
{"title":"Analysis on the socio-economic driving forces of land use changes in mountain area","authors":"Mei-ling An, Bo Zhang","doi":"10.1109/GIWRM.2012.6349561","DOIUrl":"https://doi.org/10.1109/GIWRM.2012.6349561","url":null,"abstract":"The Upper Reaches of the Heihe River is the water source of the whole Basin, in which the way of land use different from the middle and lower reaches of the Heihe River because of particular natural features and human activities. The variation processes of the land use structure in the Upper Reaches of the Heihe River have an important effect on water resources and ecosystem of the whole watershed. The methods of remote sensing image analysis, transfer matrix and principal component analysis were employed in this paper to analyze quantitatively the course of spatial and temporal variations of three main types that woodland, grassland and cultivated land in mountain area of the Upper Reaches of the Heihe River Basin. The artificial motivation of land use changes in the study area had been indicated. The results showed: (1) the variation stages of land use demonstrated clearly in the study area, in which three kinds of land use types as cultivated land, grassland and forest land had transformed obviously in two stages of 1987-1999 and 1999-2010, that is, the area of forest decreased continuously, the area of grassland decreased at the first stage and then increased at the second stage, the cultivated land increased sharply; (2) spatial variation of single land of three types was remarkable, the distribution of forest land presented acreage in the eastern part more large than western and southern less than northern part; the area of grassland were the largest, and distribution patterns of it display more in eastern and more in south; the area of cultivated land were the least, they mainly distributed along the valleys of the Heihe River, and (3) the forest and grassland degraded seriously. The main causes of land degradation in the area under study led by population increase with excessive use of land.","PeriodicalId":6394,"journal":{"name":"2012 International Symposium on Geomatics for Integrated Water Resource Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86102150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-12DOI: 10.1109/GIWRM.2012.6349586
Zhong Ma, S. Lui, Miaomiao Wang
The System of Environmental and Economic Accounting for Water (SEEAW) is an accounting framework exclusively on water resources, which was published by United Nations Statistics Division. The ability to address jointly the environmental, economic, and social aspects of water policy is central to Integrated Water Resources Management (IWRM). SEEAW has a unique contribution to make to IWRM because it is the only approach that integrates economic accounts with accounts for water use and supply in a framework that supports quantitative analysis. Based on SEEAW framework, this paper tries to start the implementation of SEEAW at regional level in China. According to the standardized information system which harmonizes information from different sources, various relevant departments, a physical water supply and use table (SUT) in Zhangye City, an arid area in Northwest China, is compiled. The results show that the characteristics of water use in Zhangye: the high proportion of farming water use, water distribution and flows within the economic system results in the few of water quantity. It seems that, in order to improve integrated water resources management in Zhangye City, it is necessary to promote the industrialization and urbanization level. For the future of water accounting practice in China, the author concludes that although there are considerable differences on water environment statistics between China and international standards currently, under the framework of international standards, effectively achieving data integration is the future direction. The SUT compilation in China has more feasibility in practice compared with other accounts in SEEAW.
{"title":"The compilation of physical water supply and use table in Zhangye City","authors":"Zhong Ma, S. Lui, Miaomiao Wang","doi":"10.1109/GIWRM.2012.6349586","DOIUrl":"https://doi.org/10.1109/GIWRM.2012.6349586","url":null,"abstract":"The System of Environmental and Economic Accounting for Water (SEEAW) is an accounting framework exclusively on water resources, which was published by United Nations Statistics Division. The ability to address jointly the environmental, economic, and social aspects of water policy is central to Integrated Water Resources Management (IWRM). SEEAW has a unique contribution to make to IWRM because it is the only approach that integrates economic accounts with accounts for water use and supply in a framework that supports quantitative analysis. Based on SEEAW framework, this paper tries to start the implementation of SEEAW at regional level in China. According to the standardized information system which harmonizes information from different sources, various relevant departments, a physical water supply and use table (SUT) in Zhangye City, an arid area in Northwest China, is compiled. The results show that the characteristics of water use in Zhangye: the high proportion of farming water use, water distribution and flows within the economic system results in the few of water quantity. It seems that, in order to improve integrated water resources management in Zhangye City, it is necessary to promote the industrialization and urbanization level. For the future of water accounting practice in China, the author concludes that although there are considerable differences on water environment statistics between China and international standards currently, under the framework of international standards, effectively achieving data integration is the future direction. The SUT compilation in China has more feasibility in practice compared with other accounts in SEEAW.","PeriodicalId":6394,"journal":{"name":"2012 International Symposium on Geomatics for Integrated Water Resource Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80428123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-12DOI: 10.1109/GIWRM.2012.6349661
Haiyan Wen, Jinwei Ma, Xiaosan Song
The water catchment water quality of northwest China is evaluated and managed through the principal component analysis. The results show that the water quality is characterized by high organic load and turbidity, and the felted roof and tiled roof achieve the requirements of category. The evaluation results conform to actual situation of the rainwater-collecting drinking water source area objectively and practically. Through this article, more objective reference for the region water resources planning, utilization, development and environmental system optimization is provided.
{"title":"Evaluation and management technology to water catchment water quality of northwest China","authors":"Haiyan Wen, Jinwei Ma, Xiaosan Song","doi":"10.1109/GIWRM.2012.6349661","DOIUrl":"https://doi.org/10.1109/GIWRM.2012.6349661","url":null,"abstract":"The water catchment water quality of northwest China is evaluated and managed through the principal component analysis. The results show that the water quality is characterized by high organic load and turbidity, and the felted roof and tiled roof achieve the requirements of category. The evaluation results conform to actual situation of the rainwater-collecting drinking water source area objectively and practically. Through this article, more objective reference for the region water resources planning, utilization, development and environmental system optimization is provided.","PeriodicalId":6394,"journal":{"name":"2012 International Symposium on Geomatics for Integrated Water Resource Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79632190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-12DOI: 10.1109/GIWRM.2012.6349656
Liming Zhang, Haowen Yan
Geographic Information Systems (GIS) are adopted to establish a water quality standard syntaxis and water quality prediction system. The system brings about syntaxis between industrial discharge standard and water quality standard; Water quality is visually displayed and water quality prediction function is achieved in order to provide reliable basis for decision making on water resources protection and utilization.
{"title":"Implementation of a GIS-based water quality standards syntaxis and basin water quality prediction system","authors":"Liming Zhang, Haowen Yan","doi":"10.1109/GIWRM.2012.6349656","DOIUrl":"https://doi.org/10.1109/GIWRM.2012.6349656","url":null,"abstract":"Geographic Information Systems (GIS) are adopted to establish a water quality standard syntaxis and water quality prediction system. The system brings about syntaxis between industrial discharge standard and water quality standard; Water quality is visually displayed and water quality prediction function is achieved in order to provide reliable basis for decision making on water resources protection and utilization.","PeriodicalId":6394,"journal":{"name":"2012 International Symposium on Geomatics for Integrated Water Resource Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78528969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-12DOI: 10.1109/GIWRM.2012.6349643
Jian-feng Zhang, Zhan-qin Lei, W. Xie
In the past decade, the Chinese government has paid a huge effort to solve the problem of drinking water in remote rural. Following the huge success in water resources for drinking requirement, it was necessary to do further studies on water quality. This paper was conducted to study the efficiency and kinetics characteristics of soil ion release during runoff process in Weibei Semi-arid Loss Plateau, a typical water resources' serious shortage area in China, and to provide foundation information for improving the quality of local cistern water. Results revealed that the most release strength was arriving at 30-60s following startup, the solutions Total Dissolved Solid (TDS) was proportional with contacting soil mass. TDS increased with declination of storm water pH. However, the release strength was irrelevance with runoff pH. Based on research results, a detailed suggestion was provided to renovate intake construction of cistern for improving the drinking water quality in remote rural areas of Weibei Semi-arid District.
{"title":"Characteristics of ion release from soil during runoff process in Weibei Semi-arid Loess Plateau","authors":"Jian-feng Zhang, Zhan-qin Lei, W. Xie","doi":"10.1109/GIWRM.2012.6349643","DOIUrl":"https://doi.org/10.1109/GIWRM.2012.6349643","url":null,"abstract":"In the past decade, the Chinese government has paid a huge effort to solve the problem of drinking water in remote rural. Following the huge success in water resources for drinking requirement, it was necessary to do further studies on water quality. This paper was conducted to study the efficiency and kinetics characteristics of soil ion release during runoff process in Weibei Semi-arid Loss Plateau, a typical water resources' serious shortage area in China, and to provide foundation information for improving the quality of local cistern water. Results revealed that the most release strength was arriving at 30-60s following startup, the solutions Total Dissolved Solid (TDS) was proportional with contacting soil mass. TDS increased with declination of storm water pH. However, the release strength was irrelevance with runoff pH. Based on research results, a detailed suggestion was provided to renovate intake construction of cistern for improving the drinking water quality in remote rural areas of Weibei Semi-arid District.","PeriodicalId":6394,"journal":{"name":"2012 International Symposium on Geomatics for Integrated Water Resource Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78559898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-12DOI: 10.1109/GIWRM.2012.6349650
Junying Chu, D. Qin, W. Shao
Lake management innovation becomes urgent since the traditional approaches are usually narrowly-focused, fragmented or insufficient in the Taihu lake basin. In this paper, characteristics of dualistic natural-artifical hydrological cycle structure are analyzed for the basin in a systematic way. Five major management clusters flowing the dualistic hydrological cycle process are identified including source reduction, end-point pollution treatment, drinking water protection, lake restoration and management capacity building. A water policy screening model is developed by the aid of social research technique for parameter estimation for the basin. Results show that source reduction and management capacity building have highest priorities among the five clusters to tackle water problems in Taihu lake basin. The most important policy measures to be strengthened are also found, including establishment of watershed based major pollutants amounts total control and assignment, improvement of PS discharge control standard and adoption of NPS cleaner production technology.
{"title":"Dualistic hydrological cycle based water management policy screening: The case of Taihu lake basin","authors":"Junying Chu, D. Qin, W. Shao","doi":"10.1109/GIWRM.2012.6349650","DOIUrl":"https://doi.org/10.1109/GIWRM.2012.6349650","url":null,"abstract":"Lake management innovation becomes urgent since the traditional approaches are usually narrowly-focused, fragmented or insufficient in the Taihu lake basin. In this paper, characteristics of dualistic natural-artifical hydrological cycle structure are analyzed for the basin in a systematic way. Five major management clusters flowing the dualistic hydrological cycle process are identified including source reduction, end-point pollution treatment, drinking water protection, lake restoration and management capacity building. A water policy screening model is developed by the aid of social research technique for parameter estimation for the basin. Results show that source reduction and management capacity building have highest priorities among the five clusters to tackle water problems in Taihu lake basin. The most important policy measures to be strengthened are also found, including establishment of watershed based major pollutants amounts total control and assignment, improvement of PS discharge control standard and adoption of NPS cleaner production technology.","PeriodicalId":6394,"journal":{"name":"2012 International Symposium on Geomatics for Integrated Water Resource Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80100247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-12DOI: 10.1109/GIWRM.2012.6349554
Wenxing Wang, Huichun Shi, Anlong Wang
According to observational data of temperature precipitation and runoff during the past 50 and more years in the upper reaches of the Shiyang River basin of the Qilian Mountains, we employ genetic algorithms and the automatic optimization method, as well as the man-machine dialogue method to build models of runoff response to temperature and precipitation changes. With these models, changes are calculated in runoff from the corresponding changes in the upper reaches of the Shiyang River basin mountain based on change trends of temperature and precipitation as well as the climate scenarios in future. The results show the runoff from the mountains is to decrease in the future due to the changes in precipitation and temperature; the extent of this decline depends mainly on the extent to which mountain precipitation declines.
{"title":"Analysis on the future runoff changes in Shiyang River basin based on genetic algorithm models","authors":"Wenxing Wang, Huichun Shi, Anlong Wang","doi":"10.1109/GIWRM.2012.6349554","DOIUrl":"https://doi.org/10.1109/GIWRM.2012.6349554","url":null,"abstract":"According to observational data of temperature precipitation and runoff during the past 50 and more years in the upper reaches of the Shiyang River basin of the Qilian Mountains, we employ genetic algorithms and the automatic optimization method, as well as the man-machine dialogue method to build models of runoff response to temperature and precipitation changes. With these models, changes are calculated in runoff from the corresponding changes in the upper reaches of the Shiyang River basin mountain based on change trends of temperature and precipitation as well as the climate scenarios in future. The results show the runoff from the mountains is to decrease in the future due to the changes in precipitation and temperature; the extent of this decline depends mainly on the extent to which mountain precipitation declines.","PeriodicalId":6394,"journal":{"name":"2012 International Symposium on Geomatics for Integrated Water Resource Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80217147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-12DOI: 10.1109/GIWRM.2012.6349601
Yin-Xia Sun, Zong-Li Ren, Ya-Qing Li
Natural Na-bentonites were modified with an organic chelating agent, sodium diethyldithiocarbamatre (DDTC), to prepare a new adsorbent (DDTC-bentonite) for mixed contaminant (Cu2+, Cd2+ and phenol) removal. The optimal conditions for preparation the DDTC-bentonite were investigated. Moreover, the DDTC-bentonite showed significant adsorption for the mixed contaminant from aqueouss solution. The Langmuir and Freundlich isotherm equations were applied to the data and values of parameters of these isotherm equations were evaluated.
{"title":"Preparation of organic chelating agents modified bentonite for mixed contaminant removal from aqueous solutions","authors":"Yin-Xia Sun, Zong-Li Ren, Ya-Qing Li","doi":"10.1109/GIWRM.2012.6349601","DOIUrl":"https://doi.org/10.1109/GIWRM.2012.6349601","url":null,"abstract":"Natural Na-bentonites were modified with an organic chelating agent, sodium diethyldithiocarbamatre (DDTC), to prepare a new adsorbent (DDTC-bentonite) for mixed contaminant (Cu2+, Cd2+ and phenol) removal. The optimal conditions for preparation the DDTC-bentonite were investigated. Moreover, the DDTC-bentonite showed significant adsorption for the mixed contaminant from aqueouss solution. The Langmuir and Freundlich isotherm equations were applied to the data and values of parameters of these isotherm equations were evaluated.","PeriodicalId":6394,"journal":{"name":"2012 International Symposium on Geomatics for Integrated Water Resource Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77178852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-12DOI: 10.1109/GIWRM.2012.6349617
Y. Jia, Chuanyan Zhao, Boying Niu, Li Zhou
The Heihe River is the second largest inland river in the arid region of northwestern China. Water resources are the primary limiting factor for the sustainable development of economy and society in the Basin. The water requirement of vegetation is the link of the relationship between the status of natural vegetation and the groundwater level in the study area. With the decrease of water resource, the scientific estimation on ecological water requirement becomes the attention-getting focus and important premise of ecosystem protected. So, The ecological water requirement of vegetation was estimated in the study based on the remote sensing and evapotranspiration process. First, this study simulated the surface flux and the evapotranspiration using the technology of remote sensing and GIS, combining the basic data such as meteorological data, Landsat TM images, current land use maps and the data from field investigate. And then the quantity of ecological water requirement was estimated based on the simulated evapotranspiration and the distributional area of vegetation. By estimation, the quantity of water requirement of dominant species, such as Populus euphratica, Tamarix ramosissima and grassland is 11.37×107m3, 0.45×107m3 and 3.24×107m3, respectively. The total ecological water requirement of vegetation is 1.506×108m3. This method afforded the effectual method for the study of regional ecological water requirement. And this study provide scientific support to banlance the water requirement from human being and natural ecosystem, and confirming the target, measure and project of ecosystem protected.
{"title":"Estimation of vegetation ecological water requirement using remote sensing in the groundwater-fluctuating belt in lower reaches of Heihe River, Northwest China","authors":"Y. Jia, Chuanyan Zhao, Boying Niu, Li Zhou","doi":"10.1109/GIWRM.2012.6349617","DOIUrl":"https://doi.org/10.1109/GIWRM.2012.6349617","url":null,"abstract":"The Heihe River is the second largest inland river in the arid region of northwestern China. Water resources are the primary limiting factor for the sustainable development of economy and society in the Basin. The water requirement of vegetation is the link of the relationship between the status of natural vegetation and the groundwater level in the study area. With the decrease of water resource, the scientific estimation on ecological water requirement becomes the attention-getting focus and important premise of ecosystem protected. So, The ecological water requirement of vegetation was estimated in the study based on the remote sensing and evapotranspiration process. First, this study simulated the surface flux and the evapotranspiration using the technology of remote sensing and GIS, combining the basic data such as meteorological data, Landsat TM images, current land use maps and the data from field investigate. And then the quantity of ecological water requirement was estimated based on the simulated evapotranspiration and the distributional area of vegetation. By estimation, the quantity of water requirement of dominant species, such as Populus euphratica, Tamarix ramosissima and grassland is 11.37×107m3, 0.45×107m3 and 3.24×107m3, respectively. The total ecological water requirement of vegetation is 1.506×108m3. This method afforded the effectual method for the study of regional ecological water requirement. And this study provide scientific support to banlance the water requirement from human being and natural ecosystem, and confirming the target, measure and project of ecosystem protected.","PeriodicalId":6394,"journal":{"name":"2012 International Symposium on Geomatics for Integrated Water Resource Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74348170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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