Prioritization of Soil Erosion-Susceptible Sub-Watersheds Using Multi-Criteria Decision Method in the Lesser Himalayas

2022 ◽  
pp. 74-91
Author(s):  
Shachi Pandey ◽  
Parmanand Kumar ◽  
Vijender Pal Panwar ◽  
Raman Nautiyal
Keyword(s):  
Land Use ◽  
Soil Erosion ◽  
Soil Quality ◽  
Remote Sensing Data ◽  
Morphometric Parameters ◽  
Himalayan Region ◽  
Elongation Ratio ◽  
Decision Method ◽  
Lesser Himalayas

Watersheds in the Lesser Himalayan region are highly susceptible to natural hazards, particularly those instigated by action and movement of water, such as soil erosion, flood, and mass movements of lands. Hilly watersheds with diversified land use and fragile ecosystems are responsible for accelerating soil erosion. Soil erosion is one of the most implicit hazards as it degrades water and soil quality in a watershed. The study prioritizes the soil erosion-susceptible zones in the Tons river watershed (India) in the Lesser Himalayan region. The interrelationships and role of morphometry, soil quality, slope, and land use together as four components in soil erosion are studied. Remote sensing data and multi-criteria decision method (MCDM) framework has been used to estimate soil erosion susceptibility of sub-watersheds. Results showed that morphometric parameters like elongation ratio and slope of sub-watersheds play a major role in determining the state of erosion.

scholarly journals Identification of Dominant Factors Affecting Soil Erosion and Water Yield within Ecological Red Line Areas

2020 ◽  
Vol 12 (3) ◽  
pp. 399 ◽  
Author(s):  
Jiangbo Gao ◽  
Yuan Jiang ◽  
Huan Wang ◽  
Liyuan Zuo
Keyword(s):  
Land Use ◽  
Spatial Distribution ◽  
Soil Erosion ◽  
Spatial Heterogeneity ◽  
Remote Sensing Data ◽  
Vegetation Coverage ◽  
Water Yield ◽  
Land Use Type ◽  
Functional Areas ◽  
Red Line

Soil conservation and water retention are important metrics for designating key ecological functional areas and ecological red line (ERL) areas. However, research on the quantitative identification of dominant environmental factors in different ecological red line areas remains relatively inadequate, which is unfavorable for the zone-based management of ecological functional areas. This paper presents a case study of Beijing’s ERL areas. In order to objectively reflect the ecological characteristics of ERL areas in Beijing, which is mainly dominated by mountainous areas, the application of remote sensing data at a high resolution is important for the improvement of model calculation and spatial heterogeneity. Based on multi-source remote sensing data, meteorological and soil observations as well as soil erosion and water yield were calculated using the revised universal soil loss equation (RUSLE) and integrated valuation of ecosystem services and tradeoffs (InVEST) model. Combining the influencing factors, including slope, precipitation, land use type, vegetation coverage, geomorphological type, and elevation, a quantitative attribution analysis was performed on soil erosion and water yield in Beijing’s ERL areas using the geographical detector. The power of each influencing factor and their interaction factors in explaining the spatial distribution of soil erosion or water yield varied significantly among different ERL areas. Vegetation coverage was the dominant factor affecting soil erosion in Beijing’s ERL areas, explaining greater than 30% of its spatial heterogeneity. Land use type could explain the spatial heterogeneity of water yield more than 60%. In addition, the combination of vegetation coverage and slope was found to significantly enhance the spatial distribution of soil erosion (>55% in various ERL areas). The superposition of land use type and slope explained greater than 70% of the spatial distribution for water yield in ERL areas. The geographical detector results indicated that the high soil erosion risk areas and high water yield areas varied significantly among different ERL areas. Thus, in efforts to enhance ERL protection, focus should be placed on the spatial heterogeneity of soil erosion and water yield in different ERL areas.

Rangeland Soil Erosion and Soil Quality: Role of Soil Resistance, Resilience, and Disturbance Regime

2018 ◽  
pp. 209-233 ◽  
Author(s):  
J.E. Herrick ◽  
M.A. Weltz ◽  
J.D. Reeder ◽  
C.E. Schuman ◽  
J.R. Simanton
Keyword(s):  
Soil Erosion ◽  
Soil Quality ◽  
Soil Resistance ◽  
Disturbance Regime

Land use impact on soil quality in eastern Himalayan region of India

2013 ◽  
Vol 186 (4) ◽  
pp. 2013-2024 ◽  
Author(s):  
A. K. Singh ◽  
L. J. Bordoloi ◽  
Manoj Kumar ◽  
S. Hazarika ◽  
Brajendra Parmar
Keyword(s):  
Land Use ◽  
Soil Quality ◽  
Himalayan Region ◽  
Land Use Impact ◽  
Eastern Himalayan Region

scholarly journals Land Degradation Situation in Bangladesh and Role of Agroforestry

1970 ◽  
Vol 4 (1) ◽  
pp. 19-25 ◽  
Author(s):  
MK Hasan ◽  
AKM Ashraful Alam
Keyword(s):  
Land Use ◽  
Soil Erosion ◽  
Soil Fertility ◽  
Key Words ◽  
Land Degradation ◽  
Agricultural Production ◽  
Agricultural Productivity ◽  
Soil Health ◽  
The World

Degradation of land is a vital issue throughout the world with the particular references to Bangladesh as it a threat to agricultural productivity. Agroforestry, a land use system is being popular in many countries to protect the land from various types of degradation. Studies have proved that agroforestry can check soil erosion to some extent, increase soil fertility, reduce salinity, alkalinity, acidity and desertification etc. ultimately improve soil health which keep the land suitable for agricultural production. The article has drawn on the basis of various reviews focusing the land degradation situation of Bangladesh and potentialities of agroforsetry. Key words: Land degradation, desertification, agroforestry.

scholarly journals Changes of Land Use/Cover and Landscape in Zhalong Wetland as “Red-Crowned Cranes Country”, Heilongjiang Province, China

2020 ◽  
Keyword(s):  
Land Use ◽  
Landscape Pattern ◽  
Human Activities ◽  
Remote Sensing Data ◽  
Climate Trend ◽  
Zhalong Wetland ◽  
Unused Land ◽  
Landsat Satellite ◽  
Landscape Patch

<p>Hydrological and ecological role of wetlands were growing significant. Based on Landsat satellite remote sensing data collected in the years of 1990, 2000 and 2014, and integrating GIS with analytical methods of landscape ecology, research on changes of land use/cover and landscape pattern of Zhalong Wetland from 1990 to 2014 was conducted. Then, we analysed the effect of human activities and climate changes on land use/cover. The main conclusions were as follows: (1) Significant changes in land use/cover have taken place in Zhalong wetland during 1990-2014.Cultivated land, unused land and construction land increased continually, while the area of reed swamp, water swamp, grass land and water land decreased accordingly; (2) Landscape patch shape has be increasingly irregular and turned complexed, there was the tend of the growing diversification and homogenization of land use change and the growing complicate landscape pattern in Zhalong wetland; (3) There was a warm-dry climate trend from 1958 to 2014; (4) Human activities including population, construction, water land pollution and production have been threatening the wetland ecosystem. Those changes in Zhalong area were caused by nature and human activity. However, the human’s contributions are great.</p>

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