Drought dynamics of Northwestern Teesta Floodplain of Bangladesh: a remote sensing approach to ascertain the cause and effect

Mahmud, Tonoy; Sifa, Shamima Ferdousi; Islam, Nazmul; Rafsan, Md. Asif; Kamal, A. S. M. Maksud; Hossain, Md. Shakhawat; Chakraborty, Tapas

doi:10.1007/s10661-021-09005-1

Cited by 6 publications

(3 citation statements)

References 48 publications

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“…The root zone soil moisture (RSM) data used in this study are from the Global Land Data Assimilation System (GLDAS). GLDAS combines satellite and ground meteorological observation data [56][57][58]. And several studies have showed that the simulated soil moisture from GLDAS have good correlation and consistency with ground-based soil moisture [59].…”

Section: Study Area and Datamentioning

confidence: 99%

Analysis of Vegetation Vulnerability Dynamics and Driving Forces to Multiple Drought Stresses in a Changing Environment

Wei

Huang

et al. 2022

Remote Sensing

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Quantifying changes in the vulnerability of vegetation to various drought stresses in different seasons is important for rational and effective ecological conservation and restoration. However, the vulnerability of vegetation and its dynamics in a changing environment are still unknown, and quantitative attribution analysis of vulnerability changes has been rarely studied. To this end, this study explored the changes of vegetation vulnerability characteristics under various drought stresses in Xinjiang and conducted quantitative attribution analysis using the random forest method. In addition, the effects of ecological water transport and increased irrigation areas on vegetation vulnerability dynamics were examined. The standardized precipitation index (SPI), standardized precipitation-evapotranspiration index (SPEI), and standardized soil moisture index (SSMI) represent atmospheric water supply stress, water and heat supply stress, and soil water supply stress, respectively. The results showed that: (1) different vegetation types responded differently to water stress, with grasslands being more sensitive than forests and croplands in summer; (2) increased vegetation vulnerability under drought stresses dominated in Xinjiang after 2003, with vegetation growth and near-surface temperature being the main drivers, while increased soil moisture in the root zone was the main driver of decreased vegetation vulnerability; (3) vulnerability of cropland to SPI/SPEI/SSMI-related water stress increased due to the rapid expansion of irrigation areas, which led to increasing water demand in autumn that was difficult to meet; and (4) after ecological water transport of the Tarim River Basin, the vulnerability of its downstream vegetation to drought was reduced.

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Section: Study Area and Datamentioning

confidence: 99%

Analysis of Vegetation Vulnerability Dynamics and Driving Forces to Multiple Drought Stresses in a Changing Environment

Wei

Huang

et al. 2022

Remote Sensing

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“…Due to the declining rate of water bodies, the available lands are used for producing crops that require lower amounts of water, such as wheat and maize. These wheat and maize are gradually taking up more land although the lands used for rice production were in static condition (Mahmud et al 2021). If the current trend of decreasing waterbodies continues as per the prediction, there is a chance of complete conversion of rice production to wheat and maize production.…”

Section: Trend Analysismentioning

confidence: 99%

Three Decades of River Bank Erosion and Accretion Appraisal Along Bank Line Shifting Trend in A Transboundary River, Teesta Floodplain of BangladeshThree Decades of River Bank Erosion and Accretion Appraisal along Bank Line Shifting Trend in a Transbounda

Parvej,

Masum,

Fahim

et al. 2023

Geoplanning J. Geomatics Plann.

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As the world's largest delta, Bangladesh possesses distinctive geomorphology dominated by transboundary rivers, making it vulnerable to climatic hazards such as river erosion that causes severe loss of land and other resources. Using four Landsat imageries of 1991, 2001, 2011 and 2021 the current study analyzed the amount and trend of river erosion and accretion on the Teesta Floodplain of Bangladesh for three decades. Findings indicate that the Teesta River experiences severe bank erosion and accretion regularly, causing bank line shifting and thus significant affecting the land-use/land-cover (LULC) change of the area. Between 1991 and 2021, approximately 194 square kilometers of land were eroded, while an equivalent area of land was accreted. Approximately 1072 km2 of agricultural land was converted into other categories, with the settlement area gradually increasing. This trend of changes shows that agricultural land and water-bodies will reduce in the next two decades while barren land and settlement areas will increase. The agricultural lands and barren lands have a greater chance of being occupied by settlement areas. At the same time, crop production patterns will move to those crops that require less water due to the reduction of water-bodies. Reduced flow during the dry season and massive discharge during the monsoon from India's Gajoldoba barrage caused massive siltation and erosion. Comprehensive river management and restoration with an intergovernmental treaty or understanding between India and Bangladesh is required to resolve this crisis in the long run.

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“…Alexandridis et al, 2020;Prananda et al;Vaiopoulos et al, 2004). Both indices were evaluated for the same period (2000-2021) on the basis of MOD13Q1.006 for each 16-day scale using a process well described in the literature(Mahmud et al, 2021).The changing population estimate used the 'WorldPop Global Project Population Data' dataset (www.worldpop.org) which is very accurate in assessing the total population(Bai et al, 2018). A time band (in milliseconds) was created and a linear regression between 2000 and 2050 was established to estimate the evolution of the population density.…”

mentioning

confidence: 99%

The downstream impact of the first and second filling of the Grand Ethiopian Renaissance Dam

Salhi

Benabdelouahab

2022

Sustain. Water Resour. Manag.

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Water con icts arise from geostrategic factors that hide behind visible ones such as the construction of dams. In the case of the Grand Ethiopian Renaissance Dam (GERD), it will have a signi cant impact on development in Ethiopia, but its lling has worried downstream countries about altering the ow of the Nile and associated ecosystems. In this study, several high spatiotemporal resolution remote sensing products were used on the basis of arti cial intelligence in Google Earth Engine. The results show that the two rst lling phases had no effect on the reservoirs of the dams in Sudan and Egypt, nor on the vegetation cover. On the contrary, signi cant reserves of water have been stored in response to unusual oods in the White Nile, and the recent trend of increasing vegetation cover has not been affected likely due to groundwater contributions and judicious anticipation, and the provision of resources for food security. In general, the parties must take long-term collaborative measures to ensure effective management and reduce waste, especially in the upcoming lling.

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Drought dynamics of Northwestern Teesta Floodplain of Bangladesh: a remote sensing approach to ascertain the cause and effect

Cited by 6 publications

References 48 publications

Analysis of Vegetation Vulnerability Dynamics and Driving Forces to Multiple Drought Stresses in a Changing Environment

Analysis of Vegetation Vulnerability Dynamics and Driving Forces to Multiple Drought Stresses in a Changing Environment

Three Decades of River Bank Erosion and Accretion Appraisal Along Bank Line Shifting Trend in A Transboundary River, Teesta Floodplain of BangladeshThree Decades of River Bank Erosion and Accretion Appraisal along Bank Line Shifting Trend in a Transbounda

The downstream impact of the first and second filling of the Grand Ethiopian Renaissance Dam

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