scholarly journals Assessing the Potential Impact of Rising Production of Industrial Wood Pellets on Streamflow in the Presence of Projected Changes in Land Use and Climate: A Case Study from the Oconee River Basin in Georgia, United States

Water ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 142 ◽  
Author(s):  
Surendra Shrestha ◽  
Puneet Dwivedi ◽  
S. McKay ◽  
David Radcliffe
Keyword(s):  
Land Use ◽  
River Basin ◽  
Land Use Changes ◽  
Base Case ◽  
Wood Pellets ◽  
Wood Pellet ◽  
Changing Climate ◽  
Trade Offs ◽  
The Impact ◽  
Oconee River

This study examines the impact of projected land use changes in the context of growing production of industrial wood pellets coupled with expected changes in precipitation and temperature due to the changing climate on streamflow in a watershed located in the northeastern corner of the Oconee River Basin. We used the Soil and Water Assessment Tool (SWAT) for ascertaining any changes in streamflow over time. The developed model was calibrated over a seven-year period (2001–2007) and validated over another seven-year period (2008–2014). Any changes in streamflow were simulated for a combination of 10 land use and climate change cases, from 2015 to 2028, under the two scenarios of High and Low Demand for industrial wood pellets. Our results suggest that streamflow is relatively stable (<1% change) for land use and temperature-related cases relative to the base case of no change in land use and climate. However, changes in precipitation by ±10% lead to considerable changes (±25%) in streamflow relative to the base case. Based on our results, expected changes in precipitation due to the changing climate will determine any changes in the streamflow, rather than projected land use changes in the context of rising demand for industrial wood pellets for export purposes in the selected watershed, keeping land under urban areas as constant. This study contributes to our broader understanding of the sustainability of the transatlantic industrial wood pellet trade; however, we suggest undertaking similar research at a larger spatial scale over a longer time horizon for understanding trade-offs across carbon, biodiversity, and water impacts of the transatlantic industrial wood pellet trade.

scholarly journals Local Perspectives on Ecosystem Service Trade-Offs in a Forest Frontier Landscape in Myanmar

Land ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 45 ◽  
Author(s):  
Melanie Feurer ◽  
Andreas Heinimann ◽  
Flurina Schneider ◽  
Christine Jurt ◽  
Win Myint ◽  
...  
Keyword(s):  
Land Use ◽  
Oil Palm ◽  
Land Use Changes ◽  
Forest Products ◽  
Well Being ◽  
Rubber Plantations ◽  
Trade Offs ◽  
Land User ◽  
The Impact ◽  
Local Perspectives

Extensive land use changes in forest frontier landscapes are leading to trade-offs in the supply of ecosystem services (ES) with, in many cases, as yet unknown effects on human well-being. In the Tanintharyi Region of Myanmar, a forest frontier landscape facing oil palm and rubber expansion, little is known about local perspectives on ES and the direct impact of trade-offs from land use change. This study assessed the trade-offs experienced with respect to 10 locally important ES from land user perspectives using social valuation techniques. The results show that while intact forests provide the most highly valued ES bundle, the conversion to rubber plantations entails fewer negative trade-offs than that to oil palm. Rubber plantations offer income, fuelwood, a good microclimate, and even new cultural identities. By contrast, oil palm concessions have caused environmental pollution, and, most decisively, have restricted local people’s access to the respective lands. The ES water flow regulation is seen as the most critical if more forest is converted; other ES, such as non-timber forest products, can be more easily substituted. We conclude that, from local perspectives, the impact of ES trade-offs highly depends on access to land and opportunities to adapt to change.

scholarly journals Identifying the runoff variation in the Naryn River Basin under multiple climate and land-use change scenarios

2021 ◽  
Author(s):  
J. S. Wu ◽  
Y. P. Li ◽  
J. Sun ◽  
P. P. Gao ◽  
G. H. Huang ◽  
...  
Keyword(s):  
Climate Change ◽  
Land Use ◽  
River Basin ◽  
Land Use Changes ◽  
Arable Land ◽  
Low Flow ◽  
Ensemble Prediction ◽  
Runoff Variation ◽  
The Future ◽  
The Impact

Abstract A multiple scenario-based ensemble prediction (MSEP) method is developed for exploring the impacts of climate and land-use changes on runoff in the Naryn River Basin. MSEP incorporates multiple global climate models, Cellular Automata–Markov and Soil and Water Assessment Tool (SWAT) within a general framework. MSEP can simultaneously analyze the effects of climate and land-use changes on runoff, as well as provide multiple climate and land-use scenarios to reflect the associated uncertainties in runoff simulation and prediction. Totally 96 scenarios are considered to analyze the trend and range of future runoff. Ensemble prediction results reveal that (i) climate change plays a leading role in runoff variation; (ii) compared to the baseline values, peak flow would increase 36.6% and low flow would reduce 36.8% by the 2080s, which would result in flooding and drought risks in the future and (iii) every additional hectare of arable land would increase the water deficit by an average of 10.9 × 103 m3, implying that the arable land should be carefully expanded in the future. Results suggest that, to mitigate the impact of climate change, the rational control of arable land and the active promotion of irrigation efficiency are beneficial for water resources management and ecological environmental recovery.

scholarly journals Detecting land use and climate impacts on water yield ecosystem service in arid and semi-arid areas. A study in Sirvan River Basin-Iran

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jahanbakhsh Balist ◽  
Bahram Malekmohammadi ◽  
Hamid Reza Jafari ◽  
Ahmad Nohegar ◽  
Davide Geneletti
Keyword(s):  
Land Use ◽  
River Basin ◽  
Ecosystem Service ◽  
Climatic Factors ◽  
Land Use Changes ◽  
Climate Impacts ◽  
Water Yield ◽  
Future Evolution ◽  
The Future ◽  
The Impact

AbstractThis study investigates how land use and climate changes affect water yield ecosystem service (ES) in the Sirvan River basin, located in Iran’s Kurdistan and Kermanshah provinces. By detecting land-use and climatic parameter changes in the past, their future evolution were modeled by scenario making. For this purpose, we developed two land-use scenarios (low and high urbanization) and two climatic scenarios (Representative Concentration Pathway 2.6 and RCP 8.5). The implemented scenarios showed how the amount of water yield in the basin and sub-basins changes in the future based on climate and land-use changes. The results showed that, concerning land use, the forest has decreased from 2013 to 2019, and built-up areas have increased. Also, the results showed that precipitation has been declining in the long term, and the temperature has been rising. Finally, the Water yield in 2019 was higher than in 2013 and lower in the future based on forecast scenarios. This trend will continue until 2040. In addition, it was found that the t effects of these factors on water yield ES are a complex process, and based on the results, the impact of climatic factors is more significant than the one of land-use change. We could conclude that this region will face more environmental problems in the future.

scholarly journals Phosphorus and Nitrogen Status in the Terengganu River Basin, Malaysia

2020 ◽  
Vol 32 (4) ◽  
pp. 935-940
Author(s):  
Y.Y. Hee ◽  
S. Suratman
Keyword(s):  
Land Use ◽  
River Basin ◽  
Urban Areas ◽  
Anthropogenic Activities ◽  
Land Use Changes ◽  
Monitoring Program ◽  
Peninsular Malaysia ◽  
Inorganic Nutrients ◽  
Dissolved Inorganic Nutrients ◽  
The Impact

This study has been carried out in the Terengganu River basin, southern South China Sea (Malaysia), to determine the concentrations of phosphorus (P) and nitrogen (N) based nutrients and their possible sources. The dissolved inorganic nutrients in this river were found to be related to land use, where higher concentrations of dissolved inorganic nutrients were recorded at the stations near to the agricultural activities and urban areas. In contrast, dissolved organic and particulate forms of P and N were generally higher in the largely undisturbed part of the upstream, suggesting that these forms of nutrients can originate from dead organic matter and living organisms, excretion of waste by animals, soil runoff and sewage discharge. When comparing with other selected rivers in the east coast of Peninsular Malaysia, Terengganu river basin showed a relatively higher concentration of P- and N-based nutrients, probably because of the fact that the river had received high impacts of anthropogenic activities. Therefore, a regular monitoring program in this basin is important in order to capture the impact of increasing population densities, land-use changes and social-economic development to the river, which has important implications for the sustainability of Terengganu as well as of Malaysian economy.

scholarly journals The Impact of Land Use Changes on Soil Erosion in the River Basin of Miocki Potok, Montenegro

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2973
Author(s):  
Velibor Spalevic ◽  
Goran Barovic ◽  
Dusko Vujacic ◽  
Milic Curovic ◽  
Morteza Behzadfar ◽  
...  
Keyword(s):  
Land Use ◽  
Soil Erosion ◽  
River Basin ◽  
Land Use Changes ◽  
National Level ◽  
River Basins ◽  
The Other ◽  
Erosion Processes ◽  
The Impact ◽  
Erosion Intensity

Land use change in all river basins leads to changes in hydrologic response, soil erosion, and sediment dynamics characteristics. Those changes are often viewed as the main cause of accelerated erosion rates. We studied the impact of land use changes on soil erosion processes in one of the watersheds in Montenegro: the Miocki Potok, using this watershed as a pilot river basin for this area. We simulated responses of soil erosion processes by using a process-oriented soil erosion Intensity of Erosion and Outflow (IntErO) model, with different settings of land use for the years 1970, 1980, 1990, 2000, 2010, and 2020. The model provides fast, effective, and affordable insight into the effects of land use change on soil erosion processes. Testing of the applied procedures was important for the further establishment of watershed management methodologies at the national level, for the other 300 river basins of Montenegro. For the current state of land use, calculated peak discharge for the Miocki Potok was 364 m3 s−1 (2020)–372 m3 s−1 (1970) for the incidence of 100 years, and there is a possibility for large flood waves to appear in the studied basin. Real soil losses, Gyear, were calculated at 13680 m3 year−1 (2020) and specific 333 m3 km−2 year−1 (2020). A Z coefficient value of 0.439 (2020) indicated that the river basin belongs to destruction category III. The strength of the erosion process was medium, and according to the erosion type, it was mixed erosion. According to our analysis, the land use changes in the last 50 years influenced a decrease in the soil erosion intensity for 14% in the Miocki Potok River Basin. Further studies should be focused on the detailed analysis of the land use changes trends with the other river basins at the national level, closely following responses of soil erosion to the changed land use structure, and effects of plant-and-soil interaction on soil erosion and sediment dynamics.

scholarly journals Study on the Impact of Land-Use Change on Runoff Variation Trend in Luojiang River Basin, China

Water ◽  
2021 ◽  
Vol 13 (22) ◽  
pp. 3282
Author(s):  
Ji He ◽  
Yu-Rong Wan ◽  
Hai-Tao Chen ◽  
Wen-Chuan Wang
Keyword(s):  
Land Use ◽  
River Basin ◽  
Urban Areas ◽  
Assessment Tool ◽  
Swat Model ◽  
Land Use Changes ◽  
Runoff Coefficient ◽  
Runoff Variation ◽  
Runoff Change ◽  
The Impact

To reveal the influence process of land use changes on runoff variation trends, this paper takes the Luojiang River of China as the study area, and the Soil and Water Assessment Tool (SWAT) model was constructed to quantitatively analyze the impact of different land uses on runoff formation in the watershed, and used the Cellular Automata-Markov (CA-Markov) model to predict future land use scenarios and runoff change trends. The results show that: (1) the SWAT model can simulate the runoff in the Luojiang River basin; (2) the runoff in the Luojiang River basin has a decreasing trend in recent 10 years, caused by the decrease of rainfall and runoff due to changes in land use; (3) the forecast shows that the land-use changes in the basin will lead to an increase in runoff coefficient in 2025. The increase of the runoff coefficient will bring some adverse effects, and relevant measures should be taken to increase the water storage capacity of urban areas. This study can help plan future management strategies for the study area land coverage and put forward a preventive plan for the possible adverse situation of runoff variation.

scholarly journals Monitoring Land Use Changes and Their Future Prospects Using GIS and ANN-CA for Perak River Basin, Malaysia

Water ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2286
Author(s):  
Muhammad Talha Zeshan ◽  
Muhammad Raza Ul Mustafa ◽  
Mohammed Feras Baig
Keyword(s):  
Land Use ◽  
Information Systems ◽  
Geographic Information Systems ◽  
River Basin ◽  
Land Use Changes ◽  
Geographic Information ◽  
Kappa Coefficient ◽  
Urban Land Use ◽  
Lulc Changes ◽  
The Impact

Natural landscapes have changed significantly through anthropogenic activities, particularly in areas that are severely impacted by climate change and population expansion, such as countries in Southeast Asia. It is essential for sustainable development, particularly efficient water management practices, to know about the impact of land use and land cover (LULC) changes. Geographic information systems (GIS) and remote sensing were used for monitoring land use changes, whereas artificial neural network cellular automata (ANN-CA) modeling using quantum geographic information systems (QGIS) was performed for prediction of LULC changes. This study investigated the changes in LULC in the Perak River basin for the years 2000, 2010, and 2020. The study also provides predictions of future changes for the years 2030, 2040, and 2050. Landsat satellite images were utilized to monitor the land use changes. For the classification of Landsat images, maximum-likelihood supervised classification was implemented. The broad classification defines four main classes in the study area, including (i) waterbodies, (ii) agricultural lands, (iii) barren and urban lands, and (iv) dense forests. The outcomes revealed a considerable reduction in dense forests from the year 2000 to 2020, whereas a substantial increase in barren lands (up to 547.39 km2) had occurred by the year 2020, while urban land use has seen a rapid rise. The kappa coefficient was used to assess the validity of classified images, with an overall kappa coefficient of 0.86, 0.88, and 0.91 for the years 2000, 2010, and 2020, respectively. In addition, ANN-CA simulation results predicted that barren and urban lands will expand in the future at the expense of other classes in the years 2030, 2040, and 2050. However, a considerable decrease will occur in the area of dense forests in the simulated years. The study successfully presents LULC changes and future predictions highlighting significant pattern of land use change in the Perak River basin. This information could be helpful for land use administration and future planning in the region.

scholarly journals La Niña Impacts on Austral Summer Extremely High-Streamflow Events of the Paranaíba River in Brazil

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Netrananda Sahu ◽  
R.B. Singh ◽  
Pankaj Kumar ◽  
Roberto Valmir Da Silva ◽  
Swadhin K. Behera
Keyword(s):  
Land Use ◽  
Trend Analysis ◽  
River Basin ◽  
Land Use Changes ◽  
Austral Summer ◽  
La Niña ◽  
Climate Variations ◽  
La Nina ◽  
Seasonal Streamflow ◽  
The Impact

The extremely high-streamflow events of the Paranaíba River basin are found to be associated with La Niña phenomenon during December–February (DJF). Extreme events are identified based on their persistent flow for seven days and more after taking retention time into consideration. The extremely high-streamflow events are associated with the La Niña years; 80% of the high-streamflow events have occurred during La Niña phases. Therefore, a very-significant 80% and above correspondence of the La Niña events and the seasonal streamflow anomalies are found in DJF. Although climate variations have direct relationship with the rainfall, streamflow variations are considered as the surrogates to rainfalls. However, apart from climate variations the anthropogenic and land-use changes also influence streamflow variations. In this study, we have applied multivelocity TOPMODEL approach and residual trend analysis to examine the impact of land-use to the streamflow at the Fazenda Santa Maria gauge stations. However, the model residual trend analysis of the TOPMODEL approach cannot quantify the extent of land-use impact. Thus, La Niña phase is important components to understand and predict the streamflow variations in the Paranaíba River basin.

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