Impact of land use/cover change on the relationship between precipitation and runoff in typical area

2018 ◽  
Vol 9 (2) ◽  
pp. 261-274 ◽  
Author(s):  
Bao-qi Li ◽  
Wei-hua Xiao ◽  
Yi-cheng Wang ◽  
Ming-zhi Yang ◽  
Ya Huang
Keyword(s):  
Land Use ◽  
River Basin ◽  
Assessment Tool ◽  
Forest Land ◽  
Runoff Generation ◽  
Dry Land ◽  
Unused Land ◽  
Land Use Types ◽  
The Impact ◽  
The Relationship

Abstract To study the impact of land use/cover change (LUCC), the relationship between precipitation and runoff was investigated. Our main objective was to ensure reasonable development, management, and sustainable utilization of water resources at a watershed scale. To investigate the relationship between precipitation and runoff, a SWAT (Soil and Water Assessment Tool) model was developed by analyzing LUCC in Naoli River basin. Then, runoff response was analyzed under different LUCC conditions. The contribution coefficient of different land use types to runoff was calculated. The results of this research study are as follows. From 1986 to 2014, dry land, forest land, paddy fields, and unused land were the major land use types, accounting for more than 93% of the total catchment. On the other hand, grass land, building land, and water bodies accounted for a small proportion. Among the four main land use types, the contribution coefficient of forest land was 3.10 mm·km−2. This indicates that forest land was suitable for runoff generation. The contribution coefficient of dry land, unused land (fluvial wetland in Naoli River basin), and paddy field are −0.11, −0.37, and −0.83 mm·km−2, respectively. This implies that these three land use types were adverse factors for runoff generation.

Soil Infiltration Characteristics under Different Land at Western Yunnan Plateau

2014 ◽  
Vol 884-885 ◽  
pp. 694-697 ◽  
Author(s):  
Dan Hui Qi ◽  
Zhi Qin Liu
Keyword(s):  
Land Use ◽  
Infiltration Rate ◽  
Water Infiltration ◽  
Forest Land ◽  
Dry Land ◽  
Grass Land ◽  
Yunnan Plateau ◽  
Soil Water Infiltration ◽  
Land Use Types ◽  
Western Yunnan

On the basis of soil physical properties of three different land use types at western Yunnan plateau, the soil moisture infiltration characteristics in these three land use types were studied with the advanced double-rings method. The results showed that there were differences on soil bulk density, soil porosity, initial soil water infiltration rate and stable soil water infiltration rate. The bulk density of dry land is higher than that of forest land and grass land, which results in the physical properties and structure of forest land soil are better than those of non-forest land. For the initial infiltration, its order from high to low is forest land, dry land and grass land. Among different stands, it is showed that from the average infiltration rate and steady infiltration rate, its order from high to low was forest land, grass land and dry land.

scholarly journals Fluxes of Nitrogen, Phosphorus, and Dissolved Organic Carbon in the inflow of the Lehnmühle reservoir (Saxony) as compared to streams draining three main land-use types in the catchment

2012 ◽  
Vol 32 ◽  
pp. 1-7 ◽  
Author(s):  
R. Benning ◽  
K. Schua ◽  
K. Schwärzel ◽  
K. H. Feger
Keyword(s):  
Land Use ◽  
Assessment Tool ◽  
Nitrogen And Phosphorus ◽  
Land Use Types ◽  
Doc Concentration ◽  
Change Impact ◽  
Agricultural Areas ◽  
The Impact ◽  
Water Assessment ◽  
Nitrogen Phosphorus

Abstract. The aim of this study was to assess the impact of land-use on inputs of nitrogen, phosphorus, and DOC into the inflow of the Lehnmühle reservoir (drinking water supply). Land-use in the study area is dominated by forest, with smaller proportions of grassland and crops. Water quality was analyzed for the hydrological years 2010 and 2011 at the outlets of three small catchments with homogenous land-use (crops, grassland and forest) and at the outlet of the watershed. The highest nitrogen and phosphorus concentrations were observed in the streams draining the agricultural areas, and the lowest concentrations were found in the forest catchment. The DOC concentration was highest at the outlet of the watershed whereas the concentrations in the small homogeneous catchments were lower. The information collected about the land-use dependent matter exports in these study areas will be used for climate change impact modeling with the Soil and Water Assessment Tool.

The Water Conservation Capacity of the Ecotone of the Forest and Grassland in HulunBuir

2013 ◽  
Vol 807-809 ◽  
pp. 1875-1880
Author(s):  
Lin Li ◽  
Yan Mei Chen ◽  
Yan Ping Wang
Keyword(s):  
Land Use ◽  
Water Conservation ◽  
Meteorological Data ◽  
Remote Sensing Data ◽  
Forest Land ◽  
Total Water ◽  
Maximum Value ◽  
Unused Land ◽  
Land Use Types ◽  
Average Water

Based on the remote sensing data and meteorological data of MODIS, this paper studied the water conservation capacity of different land use type of the ecotone of the forest and grassland in Hulun Buir with the help of the ArcGIS software. The results shows that the average of the water conservation capacity of 11 years of the whole ecotone of the forest and grassland in Hulun Buir is 62.78×108m3/yr. Among of these, the forest land accounts for 69.37% of the total water conservation capacity, and the grassland, the cultivated land and the unused land account for 23.36%, 3.67% and 3.60%. And the water conservation capacity of the four land use types presented a fluctuated improving trend. The average water conservation capacity in each year of the unit area of the ecotone achieved its maximum value, 498.43m3/hm2 ,in 2003, and achieved its minimum value,193.03m3/ hm2,in the year of 2007.

Assessing the impact of climate and land-use change on the hydrological response of the upper Betwa River basin

2021 ◽  
Author(s):  
Amit Kumar ◽  
Kumar Gaurav
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
River Basin ◽  
Assessment Tool ◽  
Hydrological Cycle ◽  
Central India ◽  
Hydrological Response ◽  
Open Land ◽  
The Mean ◽  
The Impact

<p>Climate and land-use change have altered the regional hydrological cycle. As a result, the mean summer monsoon rainfall has decreased by 10 % over central India during 1950-2015. This study evaluates the combined effect of climate and land-use change on the hydrological response of the upper Betwa River basin in Central India. We use Landsat satellite images from 1990 to 2018 to compute the changes in various land-use types; waterbody, built-up, forest, agriculture, and open land. In the past two decades, we found that the water body, built-up, and cropland have increased by 63 %, 65 %, and 3 %, respectively. However, forest and open land have decreased by 16 % and 23 %. Further, we observed a significant increase in annual average temperature and a decrease in the mean rainfall in the study area during 1980-2018.</p><p>We then coupled the land-use change with weather parameters (precipitation, temperature, wind speed, solar radiation, and relative humidity) and setup the SWAT (Soil and water assessment tool) model to simulate the hydrological responses in the catchment. We have run this model for two different time steps, 1980-2000 and 1998-2018, using the land-use of 1990 and 2018. Calibration and validation are performed for (1991-1994, 2000-2004) and (1995-1998, 2005-2008) respectively using SUFI-2 method. Our results show that the surface runoff and percolation decreased by -21 and -9 %, whereas evapotranspiration increased by 3 % in the upper Betwa River basin during 2001-2018. A decrease in rainfall, runoff, and percolation will have considerable implications on regional water security.</p>

scholarly journals Impact of land-use land cover dynamics on runoff in Panchnoi River basin, North East India

GeoScape ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 19-29
Author(s):  
Monoj Kumar Jaiswal ◽  
Nurul Amin
Keyword(s):  
Land Use ◽  
Soil Erosion ◽  
Land Use Change ◽  
Land Cover ◽  
River Basin ◽  
Alluvial Plain ◽  
Land Use Land Cover ◽  
Runoff Generation ◽  
Land Cover Dynamics ◽  
The Impact

Abstract Alteration of land-use land cover pattern causes severe consequences on the hydrological system by modifying the rainfall-runoff pattern in a region. The study aimed to investigate the impact of land-use land-cover dynamics on runoff generation in different geomorphic divisions of Panchnoi River basin. The study used the Soil Conservation Service-Curve Number method to estimate runoff generation in the Panchnoi River basin in a GIS platform. This study observed that the conversion of the land-use pattern in the geomorphic zones significantly enhances runoff. The Piedmont experience highest land-use change, where 64.17 km2 forest cover lost to cropland and built-up lands, leads to a notable increase in runoff generation, i.e. from 1 076 mm (52.82% of rainfall) in 1990 to 1 467 mm (70.46% of rainfall) in 2015. The Flood plain and New alluvial plain generates high runoff in the basin as it mostly occupied by human-induced land-uses, i.e. 1 444 mm (72.72% of rainfall) and 1 360 mm (71.70% of rainfall) respectively in 1990, which increase to 1588 mm (79.20%) and 1507 mm (78.69%) runoff respectively in 2015, due to alteration of cropland to built-up lands. In the Old alluvial plain, a marginal land-use change observed resulted in moderate growth in runoff from 1 272 mm (62.35%) to 1 404 mm (66.79%). The study indicates land-use land-cover change invokes to increase runoff generation can give rise severe environmental and economic problems in the river basin, through the occurrence of flashflood and soil erosion. Highlights for public administration, management and planning: • Evaluation of the impact of land-use land cover dynamics on runoff is essential for containing flash flood and water resource management on a basin scale. • Alteration of natural land covers has severe implications in the form of flood, soil erosion, and loss of biodiversity. • Enhanced runoff due to land-use dynamics reduces groundwater recharge rate that may cause drinking water scarcity in the dry season shortly.

scholarly journals Impact of changes in land use in the flow of the Pará River Basin, MG

2015 ◽  
Vol 19 (1) ◽  
pp. 70-76 ◽  
Author(s):  
Evandro L. Rodrigues ◽  
Marcos A. T. Elmiro ◽  
Francisco de A. Braga ◽  
Claudia M. Jacobi ◽  
Rafael D. Rossi
Keyword(s):  
Land Use ◽  
River Basin ◽  
Water Availability ◽  
Assessment Tool ◽  
Hydrological Cycle ◽  
Water Cycle ◽  
Plant Cover ◽  
Semideciduous Forest ◽  
Cerrado Vegetation ◽  
The Impact

Plant cover plays an essential role in the maintenance and balance of the hydrological cycle, performing functions in the control of water availability, which guarantee flow permanence. The use of mathematical models is an alternative to represent the hydrological system and help in the understanding of phenomena involving the variables of the water cycle, in order to anticipate and predict impacts from potential changes in land use. In the present study, the hydrological model SWAT (Soil and Water Assessment Tool) was used to analyse the dynamics of flow and water flow in the Pará River Basin, Minas Gerais, Brazil, aiming to evaluate the impact caused by changes in land use in water availability. The adjusted model was assessed by the coefficient of efficiency of Nash-Sutcliffe (between -0.057 to -0.059), indicating high correlation and coefficient of residual mass (0.757 to 0.793) and therefore a satisfactory fit. An increase of about 10% in the basin flow was estimated, as a function of changes in land use, when simulating the removal of the original 'Cerrado' vegetation and of the seasonal semideciduous forest for pasture implementation in 38% of the basin.

scholarly journals ANALYSIS OF LAND USE CHANGE IN INNER MONGOLIA REGION FROM 1978 TO 2018 BASED ON REMOTE SENSING

2020 ◽  
Vol XLIII-B3-2020 ◽  
pp. 745-749
Author(s):  
W. Qu ◽  
Y. Yao ◽  
Z. Pang ◽  
J. Lu ◽  
K. Yang ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Land Use ◽  
Land Use Change ◽  
Inner Mongolia ◽  
Arable Land ◽  
Human Interaction ◽  
Eastern Region ◽  
Forest Land ◽  
Unused Land ◽  
The Impact

Abstract. Land use change is an important theme of the research on the impact of human interaction on global change. In this paper, two phases of land use data were interpretated from remote sensing images of 1978 and 2018, and the spatial-temporal characteristics of land use change in China's Inner Mongolia Region from 1978 to 2018 were analyzed. The results indicated that grasslands and arable land are mainly distributed in the central and eastern region of Inner Mongolia, forest land are mainly distributed in the eastern region, and unused land is mainly distributed in the western region. From 1978 to 2018, the area of arable land in Inner Mongolia decreased by 9,000 km2, forest land increased by 900 km2, and the area of grassland decreased by 1,400 km2. Urban and rural, industrial mines, and residential land continued to increase with an area of 7,800 km2; and unused land increased by an area of 11,500 km2. It was indicated that after 40 years of development, land use in urban and rural areas, industrial mines, and residential areas caused by human activities in the Inner Mongolia Region has increased significantly. At the same time, the policy of returning farmland to forests to protect the environment has achieved significant results.

scholarly journals The assessment of the impact of short-term land use/cover changes on water resources in the Yanghe reservoir basin, China

2021 ◽  
Author(s):  
Daming Li ◽  
Shilong Bu ◽  
Shuo Chen ◽  
Qicheng Li ◽  
Yanqing Li
Keyword(s):  
Land Use ◽  
Water Resources ◽  
Land Use Planning ◽  
Assessment Tool ◽  
Swat Model ◽  
Green Water ◽  
Hydrological Process ◽  
Unused Land ◽  
Reservoir Basin ◽  
The Impact

Abstract Land Use/Land Cover (LULC) is the main factor that affects the hydrological process of catchment. A better understanding of its influence is of great significance to future land use planning and water resources management. Since 2011, the local government has implemented the land remediation plan, and the LULC has undergone major changes in the Yanghe Reservoir Basin. This paper used The Soil and Water Assessment Tool (SWAT) model to study the Blue Water (BW) and Green Water (GW) resources in three typical years (wet year, dry year, and normal year) under the two LULC scenarios in 2010 and 2017 of the basin. The results showed that from 2010 to 2017, the area of cultivated land and residential construction land increased by 227.28% and 269.23%, respectively; the area of unused land, woodland, and grassland decreased by 98.84%, 35.90% and 39.52%, respectively. Compared with the results of the 2010 LULC scenario, the average BW of the three typical years under the 2017 LULC scenario decreased by 11.66%, 52.32%, and 21.95%, respectively, and the average GW flow increased by 6.72%, 2.90%, and 6.83%, respectively, and the average GW reserves decreased by 14.80%, 11.39%, and 7.67%, respectively. Therefore, this study believed that changes of LULC have led to a significant decrease in runoff and an increase in evapotranspiration in the basin.

scholarly journals Analisa Kualitas Tanah Pada Berbagai Penggunaan Lahan di Sub Sub DAS Cimanuk Hulu

SoilREns ◽  
2017 ◽  
Vol 14 (2) ◽  
Author(s):  
Nurina Hanum Ayuningtias ◽  
Mahfud Arifin ◽  
Maya Damayani
Keyword(s):  
Land Use ◽  
Soil Quality ◽  
Survey Methods ◽  
Land Uses ◽  
Forest Land ◽  
Dry Land ◽  
Landuse Change ◽  
Physical Chemical ◽  
Different Types ◽  
The Relationship

Soil quality test is needed to find out the influence of landuse change due to soil quality dan characteristics. This research aims to comparing various land use that influence the physical, chemical and biological soil on Andisol and Inceptisol, obtain information of soil quality at various land uses on Andisol and Inceptisol, and study the relationship between soil quality and erosion at various land use The study was conducted in Sub Sub watershed Hulu Cimanuk with an area of 16.171 hectares. The study was conducted on four different types of land use namely forest land, agriculture land, tea garden and mixed garden. The study was conducted with survey methods, descriptive and comparative. Erosion calculation using the RUSLE formula.Analysis of soil quality is calculated based on criteria Mausbach & Seybold (1998) and modified in accordance with the conditions of the study area. The results showed that each land use has a different effect on soils quality nor with erosion. Soil quality on forest land has higher value than other land use and erosion that occurs most low at 0.2 tonnes / ha / year. The use of dry land has the lowest value of soil erosion begitupula highest of 387 tonnes / ha / year.Key words: erosion, landuse change, soil quality, and watershed.

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