Channel migration and its impact on land use/land cover using RS and GIS: A study on Khowai River of Tripura, North-East India

Debnath, Jatan; Das, Nabanita; Ahmed, Istak; Bhowmik, Moujuri

doi:10.1016/j.ejrs.2017.01.009

Cited by 82 publications

(54 citation statements)

References 25 publications

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“…They found that the increase of human activities is the main reason for the decrease of ecosystem service. In addition, Debnath et al [22] assessed the impacts of river migration on land use change in India. In summary, the current researches on the relationship between land use and the ecological environment focus on the coupling relationship between land use change and the ecological environment.…”

Section: General Situation Of the Study Areamentioning

confidence: 99%

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Decoupling of Land Use Intensity and Ecological Environment in Gansu Province, China

et al. 2020

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Land is the carrier of the production and living activities of human society and the basis of survival and development of all living organisms. With the continuous development of the social economy, the unreasonable use of land is becoming more and more serious, aggravating the deterioration of the ecological environment. Most studies in this field have mainly focused on land use changes and the corresponding impacts on the ecological environment, but relatively few studies have delinked the relationship between land use intensity and the ecological environment. Based on data on these two factors for Gansu Province from 1998 to 2017, we used the Tapio decoupling model to evaluate the decoupling relationship between land use intensity and ecological environment. From 1998 to 2017, the comprehensive land use intensity in Gansu province increased by 107.77%, and the comprehensive ecological environment index increased by 63.76%. In general, the relationship between land use intensity and ecological environment experienced five states, namely weak decoupling, strong negative decoupling, strong decoupling, expansive negative decoupling, and declining decoupling. During 1999–2013 and 2013–2016, land use intensity and ecological environment had decoupled, and the main reasons were as follows: (1) The Chinese government introduced a series of farmland protection policies and measures, controlled the area of newly added construction land, and reduced urban land expansion; (2) ecological restoration projects for mountains, forests, fields, lakes, and grassland strengthened the environmental protection in Gansu Province; and (3) in the process of economic development, the increased investment of technology and capital improved the land use efficiency, finally realizing the “double growth” of land use intensity and environmental quality. Based on these results, land use intensity and environmental quality are not necessarily contradictory, and a moderate improvement of land use efficiency and environmental protection can probably result in increased land use intensity and higher environmental quality.

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Section: General Situation Of the Study Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Decoupling of Land Use Intensity and Ecological Environment in Gansu Province, China

et al. 2020

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“…The meandering river's morphological analysis calculates through sinuosity index, straight meander and centerline length, erosional and accretional area and length, channel migration, centerline elongation, the radius of curvature, stream power, meandering curve and bend tightness index. The mending geometry of a river depends on the following equation [62,63] (1) = sin s M 2 where equals with the direction of location s , is the maximum angle of meander and M is the channel length of the meander. Angle is a unique function based on the disproportionate relationship of meander length.…”

Section: Meandering Charactermentioning

confidence: 99%

Estimation and prediction of the oscillation pattern of meandering geometry in a sub-catchment basin of Bhagirathi-Hooghly river, West Bengal, India

Ghosh

Roy

2020

SN Appl. Sci.

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Meandering is the winding curve or bends in a river within the floodplain area. Though it is a natural process, it affects the populace by the resultant effect of lateral migration with bank erosion in the floodplain area. The present sub-catchment basin (Nabadwip-Kalyani stretch) of the Bhagirathi-Hooghly river is a vital lifeline of southern West Bengal, which offers adequate water for irrigation, industrialisation, and human habitation. This region is experiencing a favourable geomorphic change through river bank line changing with bank erosion and sinuous meandering. Illegal sand mining and monsoonal flood enhances the meandering process and triggers the reduction of settlement and cropland. The present study elaborates on the migration tendencies and meandering geometry of this zone and tries to predict the future river centerline position in a sinuous course. The study area is divided into 30 cross-sections, which reveals the increasing trend of lateral migration and erosion behaviour towards the eastward section of this region. The spatial and temporal shifting of river centerline and resultant migration observes and predicts through the migration coefficient approach (Hasegawa in

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“…Therefore, it is not appropriate to apply Shanley, Wright and van Wagoner models to inland rivers away from the ocean. For inland rivers, in addition to the tectonic and climatic factors, the riparian and floodplain material composition, vegetation coverage, basin sediment size, and sediment composition, flow rate changes can affect the base surface changes in a certain extent, thus influence river sediment (Sanz-Perez & Menendez-Pidal, 2016;Debnath, Pan, Ahmed, & Bhowmik, 2017;Fryirs, 2017;Hawie et al, 2017). The change of the base is a function of the influencing factors, and the influence of each factor on the change of the base is studied on a case-by-case basis.…”

Section: Influence Factors Of the River Sequencementioning

confidence: 99%

A New Sequence Stratigraphic Framework of Terrestrial Fluvial

Lin¹,

Chen²,

Shan³

et al. 2017

SET

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Currently, the recognition and research on the classification of fluvial types mainly focus on the description and results of a series of indicators, such as the plane shape and sediment characteristics. However, there is limited literacy about how to demonstrate the fluvial types from the depositional process, especially less on sequence model of inland fluvial. Thus, this paper aims o propose a new kind of sequence stratigraphic framework, which is able to reflect the fluvial processes under the perspective of sequence stratigraphy. Accordingly, we use the principle of concrete analysis for concrete problems by comprehensively summing up the previous classification schemes of river types. With the research method of sedimentation process, new fluvial systems tracts for fluvial are presented here, including four parts: low fluvial system tract (LFST), advancing fluvial system tract (AFST), flooding fluvial system tract (FFST), receding fluvial system tract (RFST). Moreover, these could be applied to tackle the problem of the traditional division of fluvial. Various rivers have the different characteristics of systems tracts, then this may play a vital role in the discrimination of meandering river, braided river, anastomosing river and branched river. This study embodies the philosophical thought of Process Sedimentology and may contribute to revealing the deposition process of the fluvial system more profoundly from the aspect of genetic mechanism and evolution course. Most importantly, the fluvial classification system is definitely improved from the description stage to a complete rational stage.

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Channel migration and its impact on land use/land cover using RS and GIS: A study on Khowai River of Tripura, North-East India

Cited by 82 publications

References 25 publications

Decoupling of Land Use Intensity and Ecological Environment in Gansu Province, China

Decoupling of Land Use Intensity and Ecological Environment in Gansu Province, China

Estimation and prediction of the oscillation pattern of meandering geometry in a sub-catchment basin of Bhagirathi-Hooghly river, West Bengal, India

A New Sequence Stratigraphic Framework of Terrestrial Fluvial

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