An Integrated Approach for the Prioritization of Subwatersheds in the Urmodi River Catchment (India) for Soil Conservation using Morphometric and Land Use Land Cover (LULC) factors

Bagwan, Wasim Ayub; Gavali, R. S.

doi:10.1007/s43217-020-00041-4

Cited by 9 publications

(17 citation statements)

References 53 publications

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“…The larger Rc value indicates that a watershed shape is close to a circle. The Rc value also indicates the evolution of the shape of a watershed, lower value indicates a young river phase, while higher value corresponds to an adult phase of watershed development [19]. Subwatershed that have the highest Rc value in the study area is SB 1, while the lowest is SB 2.…”

Section: Shape Aspectmentioning

confidence: 97%

“…The analysis of the shape aspect can be seen in Table 3. Basin shape parameters related to flood discharge [19]. Sub-watershed that have the highest Bs value is SB 2, while the lowest SB value is SB 1.…”

Section: Shape Aspectmentioning

confidence: 99%

“…The highest average value of Rl in the research area is in SB 6. This indicates that SB 6 has a larger runoff than other sub-watersheds [19]. Stream frequency is total number of streams from a watershed per unit area.…”

Section: Linear Aspectmentioning

confidence: 99%

“…Length of overland flow (𝐿 𝑜 ) is the length of water flow on the surface before it accumulates in a water channel. Lo related to physiographic and hydrological development of a watershed [19]. Lo value is inversely proportional to the average slope of the watershed.…”

Section: Linear Aspectmentioning

confidence: 99%

“…The Rho coefficient factor tightly related to the composition of the river network and the physiographic development of a watershed. This factor is also related to natural climatic conditions, geology, biology, geomorphology, and anthropogenic activities [19]. The sub-watershed with the highest Rho value is SB6 while the lowest is SB 3.…”

Section: Linear Aspectmentioning

confidence: 99%

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Flash flood assessment at Upper Cisadane Watershed using land use/land cover and morphometric factors

Wardhani¹,

Pravitasari

Ridwansyah³

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The regions of upstream Cisadane watershed tend to gain more flash flood cases and reduce the water catchment due to encroachment of settlement areas. Researches on flash flood disaster and land use/land cover change are important to reduce the impact of flash flood disaster to the community and environment. This study aims to: 1). Determine morphometric characteristics and land use/land cover changes and 2). Prioritize sub-watersheds for flash flood disaster management. Land Use Land Cover (LULC) and morphometry parameters were used to prioritize the sub-watersheds as a basis for flash flood disaster mitigation in the research sites. The land use data from three different periods (2011, 2015, and 2020) were modelled to understand the land use change in the research sites. Morphometric characteristics were quantitatively analysed over three aspects including linear, relief, and shape aspects over seven sub-watersheds. Morphometric parameter was considered as an important parameter in order to understand the capacity and hydrology condition at a particular watershed towards precipitation rate. According to the land use change analysis gained from 2011 to 2020, the trend of land use change was dominated by settlement area and cultivated land. These areas tend to grow in 2015 and 2020. The integration results of LULC 2020 and morphometric analysis revealed that the Sub Basin 1 (SB 1) sub-watershed was the top most priority for flash flood mitigation planning, followed by SB 7, SB 3, SB 5, SB 4, SB 2, and SB 6.

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Section: Shape Aspectmentioning

confidence: 97%

Section: Shape Aspectmentioning

confidence: 99%

Section: Linear Aspectmentioning

confidence: 99%

Section: Linear Aspectmentioning

confidence: 99%

Section: Linear Aspectmentioning

confidence: 99%

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Flash flood assessment at Upper Cisadane Watershed using land use/land cover and morphometric factors

Wardhani¹,

Pravitasari

Ridwansyah³

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Predicting soil loss in small watersheds under different emission scenarios from CMIP6 using random forests

Chen,

Wang,

Jiao

et al. 2024

Earth Surf Processes Landf

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Soil loss is a common land degradation process worldwide, which is impacted by land use and climate change. In this study, random forests (RF) were first used to establish a soil loss model at the scale of a small watershed in the hilly‐gully region of the Loess Plateau based on the field observation data. Subsequently, the model was used to predict soil loss in the Chabagou watershed under the historical (1990–2020) and future emission scenarios, namely SSP1–2.6 (low‐emission), SSP2–4.5 (medium‐emission) and SSP5–8.5 (high‐emission) (2030–2,100) from the Coupled Model Intercomparison Project Phases 6 (CMIP6). In the RF model, the coefficient of determination (R2) and Nash‐Sutcliffe coefficient of efficiency (NS) were both greater than 0.86, and the RMSE‐observations standard deviation ratio (RSR) was less than 0.36. Additionally, the RF‐based model had higher simulation accuracy and robustness than those of the previous soil loss models, indicating its potential for wider applications in simulating soil loss. Compared with soil loss between 1990 and 1999, climate change led to a 35.36% increase in soil loss, while land use change resulted in an 11.13% reduction from 2000 to 2020 in the Chabagou watershed. This reveals that the current land use management could not effectively counterbalance the soil loss caused by rainstorms. Furthermore, compared with the historical period (1990–2020), under SSP1–2.6, SSP2–4.5 and SSP5–8.5 (2030–2,100), the soil loss rates without land use change would be increased by 6.01%, 19.11% and 35.35%, while the soil loss rates with land use change would be changed by −5.88%, +4.41% and +19.12%, respectively. These results help to provide a scientific basis for enhancing the capacity to respond to climate change and mitigation of soil and water loss on the Loess Plateau.

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Recognition of suitable small watersheds for check dam construction on the Loess Plateau

Chen,

Bai,

Jiao

et al. 2023

Land Degrad Dev

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Check dams are used for soil and water conservation worldwide, especially on the Chinese Loess Plateau, which has suffered from severe soil and water loss. To promote ecological conservation and high‐quality development in the Yellow River basin, considerable effort should be devoted to building check dams in the small watersheds where the conditions permit on the Loess Plateau. Therefore, suitable small watersheds must be identified for constructing new check dams. In this study, the weighted overlay method (WOM) of the multi‐criteria decision‐making analysis method, the random forest (RF), and the support vector machine (SVM) of machine learning methods were first applied to simulate the suitability of small watersheds for check dam construction in the Ganguyi upstream area of the Yanhe River basin on the Loess Plateau. Accuracy assessment showed that the accuracy of the three models was almost perfect and RF had the highest accuracy of 0.95, followed by SVM (0.87), and WOM (0.83). Meanwhile, the impacts of topographic factors and soil erodibility were found to be generally higher than those of the other factors, and 56% of small watersheds had high and very high suitability for check dam construction, 67% of these small watersheds have already been built as check dams. Finally, a total of 108 small watersheds were found to be suitable in the study area when considering their environmental characteristics. The methodology developed in the study can be used as a preliminary planning step for check dam construction and as a foundation for detailed field investigations in the future, which help to realize the sustainable use of soil and water resources.

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An Integrated Approach for the Prioritization of Subwatersheds in the Urmodi River Catchment (India) for Soil Conservation using Morphometric and Land Use Land Cover (LULC) factors

Cited by 9 publications

References 53 publications

Flash flood assessment at Upper Cisadane Watershed using land use/land cover and morphometric factors

Flash flood assessment at Upper Cisadane Watershed using land use/land cover and morphometric factors

Predicting soil loss in small watersheds under different emission scenarios from CMIP6 using random forests

Recognition of suitable small watersheds for check dam construction on the Loess Plateau

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