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Gao Y, Chen J, Luo H, Wang H. Prediction of hydrological responses to land use change. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 708:134998. [PMID: 31810667 DOI: 10.1016/j.scitotenv.2019.134998] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 10/14/2019] [Accepted: 10/14/2019] [Indexed: 06/10/2023]
Abstract
The change of land use and land coverage (LULC) has a direct impact on the underlying surface of the drainage basin, hence alters the rainfall-runoff processes. This study described the procedure to use the CA-Markov model to predict the future distributed land use in the Qinhuai River basin in 2028 based on the historical evolution. The hydrological model HEC-HMS was then utilized to examine the impact of land use change on the hydrological responses of the drainage basin. The major findings were as follows: (1) from 2001 to 2010, major changes detected in land use were substantial conversion of paddy fields, forest land and dryland into urban land (increased by 56.81%), following the trend recognized by CA-Markov model, urban land and dry land were predicted to increase by 17.47% and 14.05% by 2028. (2) the projected land use in 2028 resulted in various degrees of increase in flood peak and volume according to the severity of the floods characterized by flood volumes, the smaller floods were predicted to result in more significant increase with 3.5% increase in flood peak and 2.9% increase in flood volume while these values decreased to 0.4% and 1.1% for a big scale flood; (3) greater increase in urbanization leads to greater change of the flood peak and volume change. For small scale floods, when the proportion of urban land use increases by 30% to 60% hypothetically, the relative increment in flood peaks increase from 4.7% to 8.1% with 4% to 6.6% increase in the flood volume; (4) on the sub-basin scale, the trend of change in urban land use and the flood peak and volume were consistent. The methods and conclusions may shed light on urban land development and management and design of flood control measures in a large river basin.
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Affiliation(s)
- Yuqin Gao
- College of Water Conservancy and Hydropower Engineering, Hohai University, No. 1, Xi Kang Rd., Gu Lou District, Nanjing City 210098, Jiangsu Province, China.
| | - Jiahui Chen
- College of Water Conservancy and Hydropower Engineering, Hohai University, No. 1, Xi Kang Rd., Gu Lou District, Nanjing City 210098, Jiangsu Province, China
| | - Hao Luo
- University of Illinois at Urbana-Champaign, USA
| | - Huaizhi Wang
- Shanghai Municipal Engineering Design Institute Design Institute 6 Co., Ltd., Anhui Province, China
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Gao Y, Yuan Y, Wang H, Schmidt AR, Wang K, Ye L. Examining the effects of urban agglomeration polders on flood events in Qinhuai River basin, China with HEC-HMS model. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2017; 75:2130-2138. [PMID: 28498125 DOI: 10.2166/wst.2017.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The urban agglomeration polders type of flood control pattern is a general flood control pattern in the eastern plain area and some of the secondary river basins in China. A HEC-HMS model of Qinhuai River basin based on the flood control pattern was established for simulating basin runoff, examining the impact of urban agglomeration polders on flood events, and estimating the effects of urbanization on hydrological processes of the urban agglomeration polders in Qinhuai River basin. The results indicate that the urban agglomeration polders could increase the peak flow and flood volume. The smaller the scale of the flood, the more significant the influence of the polder was to the flood volume. The distribution of the city circle polder has no obvious impact on the flood volume, but has effect on the peak flow. The closer the polder is to basin output, the smaller the influence it has on peak flows. As the level of urbanization gradually improving of city circle polder, flood volumes and peak flows gradually increase compared to those with the current level of urbanization (the impervious rate was 20%). The potential change in flood volume and peak flow with increasing impervious rate shows a linear relationship.
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Affiliation(s)
- Yuqin Gao
- College of Water Conservancy and Hydropower Engineering, Hohai University, No. 1, Xi Kang Rd, Gu Lou District, Nanjing City 210098, Jiangsu Province, China E-mail:
| | - Yu Yuan
- College of Water Conservancy and Hydropower Engineering, Hohai University, No. 1, Xi Kang Rd, Gu Lou District, Nanjing City 210098, Jiangsu Province, China E-mail:
| | - Huaizhi Wang
- College of Water Conservancy and Hydropower Engineering, Hohai University, No. 1, Xi Kang Rd, Gu Lou District, Nanjing City 210098, Jiangsu Province, China E-mail:
| | - Arthur R Schmidt
- Civil Engineering from University of Illinois Urbana-Champaign, UrbanaChampaign, USA
| | - Kexuan Wang
- Civil Engineering from University of Illinois Urbana-Champaign, UrbanaChampaign, USA
| | - Liu Ye
- College of Water Conservancy and Hydropower Engineering, Hohai University, No. 1, Xi Kang Rd, Gu Lou District, Nanjing City 210098, Jiangsu Province, China E-mail:
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Dislich C, Keyel AC, Salecker J, Kisel Y, Meyer KM, Auliya M, Barnes AD, Corre MD, Darras K, Faust H, Hess B, Klasen S, Knohl A, Kreft H, Meijide A, Nurdiansyah F, Otten F, Pe'er G, Steinebach S, Tarigan S, Tölle MH, Tscharntke T, Wiegand K. A review of the ecosystem functions in oil palm plantations, using forests as a reference system. Biol Rev Camb Philos Soc 2016; 92:1539-1569. [PMID: 27511961 DOI: 10.1111/brv.12295] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 07/07/2016] [Accepted: 07/11/2016] [Indexed: 11/28/2022]
Abstract
Oil palm plantations have expanded rapidly in recent decades. This large-scale land-use change has had great ecological, economic, and social impacts on both the areas converted to oil palm and their surroundings. However, research on the impacts of oil palm cultivation is scattered and patchy, and no clear overview exists. We address this gap through a systematic and comprehensive literature review of all ecosystem functions in oil palm plantations, including several (genetic, medicinal and ornamental resources, information functions) not included in previous systematic reviews. We compare ecosystem functions in oil palm plantations to those in forests, as the conversion of forest to oil palm is prevalent in the tropics. We find that oil palm plantations generally have reduced ecosystem functioning compared to forests: 11 out of 14 ecosystem functions show a net decrease in level of function. Some functions show decreases with potentially irreversible global impacts (e.g. reductions in gas and climate regulation, habitat and nursery functions, genetic resources, medicinal resources, and information functions). The most serious impacts occur when forest is cleared to establish new plantations, and immediately afterwards, especially on peat soils. To variable degrees, specific plantation management measures can prevent or reduce losses of some ecosystem functions (e.g. avoid illegal land clearing via fire, avoid draining of peat, use of integrated pest management, use of cover crops, mulch, and compost) and we highlight synergistic mitigation measures that can improve multiple ecosystem functions simultaneously. The only ecosystem function which increases in oil palm plantations is, unsurprisingly, the production of marketable goods. Our review highlights numerous research gaps. In particular, there are significant gaps with respect to socio-cultural information functions. Further, there is a need for more empirical data on the importance of spatial and temporal scales, such as differences among plantations in different environments, of different sizes, and of different ages, as our review has identified examples where ecosystem functions vary spatially and temporally. Finally, more research is needed on developing management practices that can offset the losses of ecosystem functions. Our findings should stimulate research to address the identified gaps, and provide a foundation for more systematic research and discussion on ways to minimize the negative impacts and maximize the positive impacts of oil palm cultivation.
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Affiliation(s)
- Claudia Dislich
- Department of Ecosystem Modelling, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany.,Department of Ecological Modelling, Helmholtz Centre for Environmental Research - UFZ, 04318, Leipzig, Germany
| | - Alexander C Keyel
- Department of Ecosystem Modelling, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany
| | - Jan Salecker
- Department of Ecosystem Modelling, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany
| | - Yael Kisel
- Department of Ecosystem Modelling, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany
| | - Katrin M Meyer
- Department of Ecosystem Modelling, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany
| | - Mark Auliya
- Department of Conservation Biology, Helmholtz Centre for Environmental Research - UFZ, 04318, Leipzig, Germany
| | - Andrew D Barnes
- Department of Systemic Conservation Biology, Faculty of Biology and Psychology, University of Göttingen, 37073, Göttingen, Germany
| | - Marife D Corre
- Department of Soil Science of Tropical and Subtropical Ecosystems, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany
| | - Kevin Darras
- Department of Crop Sciences, Faculty of Agricultural Sciences, University of Göttingen, 37077, Göttingen, Germany
| | - Heiko Faust
- Department of Human Geography, Faculty of Geoscience and Geography, University of Göttingen, 37077, Göttingen, Germany
| | - Bastian Hess
- Department of Ecosystem Modelling, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany
| | - Stephan Klasen
- Department of Development Economics, Faculty of Economic Science, University of Göttingen, 37073, Göttingen, Germany
| | - Alexander Knohl
- Department of Bioclimatology, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany
| | - Holger Kreft
- Department of Biodiversity, Macroecology & Conservation Biogeography, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany
| | - Ana Meijide
- Department of Bioclimatology, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany
| | - Fuad Nurdiansyah
- Department of Ecosystem Modelling, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany.,Department of Crop Sciences, Faculty of Agricultural Sciences, University of Göttingen, 37077, Göttingen, Germany
| | - Fenna Otten
- Department of Human Geography, Faculty of Geoscience and Geography, University of Göttingen, 37077, Göttingen, Germany
| | - Guy Pe'er
- Department of Conservation Biology, Helmholtz Centre for Environmental Research - UFZ, 04318, Leipzig, Germany.,German Centre for Integrative Biodiversity Research (iDiv), 04103, Leipzig, Germany
| | - Stefanie Steinebach
- Institute of Social and Cultural Anthropology, Faculty of Social Sciences, University of Göttingen, 37073, Göttingen, Germany
| | - Suria Tarigan
- Department of Soil Sciences and Land Resources Management, Bogor Agriculture University, Bogor, Indonesia
| | - Merja H Tölle
- Department of Bioclimatology, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany.,Institute for Geography, University of Giessen, 35390, Giessen, Germany
| | - Teja Tscharntke
- Department of Crop Sciences, Faculty of Agricultural Sciences, University of Göttingen, 37077, Göttingen, Germany
| | - Kerstin Wiegand
- Department of Ecosystem Modelling, Faculty of Forest Sciences and Forest Ecology, University of Göttingen, 37077, Göttingen, Germany
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Stojković M, Jaćimović N. A simple numerical method for snowmelt simulation based on the equation of heat energy. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 73:1550-1559. [PMID: 27054726 DOI: 10.2166/wst.2015.628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This paper presents one-dimensional numerical model for snowmelt/accumulation simulations, based on the equation of heat energy. It is assumed that the snow column is homogeneous at the current time step; however, its characteristics such as snow density and thermal conductivity are treated as functions of time. The equation of heat energy for snow column is solved using the implicit finite difference method. The incoming energy at the snow surface includes the following parts: conduction, convection, radiation and the raindrop energy. Along with the snow melting process, the model includes a model for snow accumulation. The Euler method for the numerical integration of the balance equation is utilized in the proposed model. The model applicability is demonstrated at the meteorological station Zlatibor, located in the western region of Serbia at 1,028 meters above sea level (m.a.s.l.) Simulation results of snowmelt/accumulation suggest that the proposed model achieved better agreement with observed data in comparison with the temperature index method. The proposed method may be utilized as part of a deterministic hydrological model in order to improve short and long term predictions of possible flood events.
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Affiliation(s)
- Milan Stojković
- Institute for the Water Development 'Jaroslav Černi', Jaroslav Černi Street, 80, 11000 Belgrade, Serbia E-mail:
| | - Nenad Jaćimović
- Faculty of Civil Engineering, University of Belgrade, Bulevar Kralja Aleksandra, 73, 11000 Belgrade, Serbia
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Lin Y, Larssen T, Vogt RD, Feng X, Zhang H. Modelling transport and transformation of mercury fractions in heavily contaminated mountain streams by coupling a GIS-based hydrological model with a mercury chemistry model. THE SCIENCE OF THE TOTAL ENVIRONMENT 2011; 409:4596-4605. [PMID: 21855960 DOI: 10.1016/j.scitotenv.2011.07.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2010] [Revised: 07/13/2011] [Accepted: 07/15/2011] [Indexed: 05/31/2023]
Abstract
Many heavily polluted areas are located in remote regions that lack routine hydrologic monitoring. A modelling method that can produce scenarios of water chemistry trends for regions that lack hydrological data is therefore needed. The Wanshan mining area, in Guizhou province in south-western China, is such a region, as it is heavily polluted with mercury (Hg). In order to model Hg transport in a stream draining the Wanshan mining area, a Geographic Information System (GIS) hydrologic model (HEC-HMS) was coupled with a simulation model for Hg fractions in water (WASP Hg). Hydrological variations in the stream flow can thereby be simulated based on readily available precipitation data. The WASP 7 MERC Hg model was used for simulating variations in total Hg, dissolved Hg and methyl-Hg concentrations. The results of HEC-HMS modelling of flow show clear seasonal variation. Winter (Oct-Dec) constitutes the dry season with low flow, while the summer season (Jun-Aug) is rainy with high flow. 48% of total annual precipitation happens in the three summer months. The stream flows at the high flow events were several times higher than normal flow. The modelled total suspended solids and Hg concentrations were tested against monitoring data from two sampling campaigns conducted in September 2007 and August 2008. The model produced reasonable simulations for TSS, THg, DHg and MeHg, with relative errors generally around 10% for the modelled parameters. High flow events are the main contributors for release of both suspended particles and Hg. The three high flow events account for about 50% of annual discharge of THg. The annual total discharge of Hg was 8.8 kg Hg high up in the stream and 2.6 kg where the stream meets a large river 20 km downstream of the pollution source. Hence, about 70% of Hg is retained in the stream through sedimentation.
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Affiliation(s)
- Yan Lin
- Department of Chemistry, University of Oslo, POB 1033, 0315 Oslo, Norway.
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