Earth observation satellite data–based assessment of wetland dynamics in the Kashmir Himalaya

Alam, Akhtar; Bhat, M. Sultan; Ahsan, Shafkat; Taloor, Ajay K.; Farooq, Hakim

doi:10.1007/s10661-023-12185-7

Cited by 3 publications

(2 citation statements)

References 69 publications

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“…Flood mapping in Pakistan is carried out using remote sensing and geographic information systems (GIS) (Ghouri et al, 2023). In the Kashmir Himalayas, the dynamics of wetlands are being assessed based on satellite Earth observation data (Alam et al, 2023). The use of remote sensing is associated not only with uninhabited areas, but also with inhabited ones, as it is also used to map and monitor cities (Kumar et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

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2024

Ukr. j. for. wood sci.

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Babyn et al.of plants for urban landscaping in accordance with their environmental characteristics.Due to climate change and a significant increase in anthropogenic impact, it is necessary to expand the range of planting materials when creating urban plantings. As noted by N. Seyidoğlu Akdeniz (2020), the use of plants of the genus Cercis L. for urban landscaping with white, pink, and purple colours gives a sense of calm, continuity and vitality, which, in turn, IntroductionGreen spaces in the urban greening system play a crucial role in the landscape and architectural, sanitary and hygienic, utilitarian and decorative, and other aspects of urban autecological relations. In particular, all green spaces reduce the level of gas and dust pollution, improve the microclimate by reducing the ambient temperature and increasing humidity, but different species cope with these tasks in different ways, so the question arises of the correct selection Abstract. Consideration of the role of green spaces in urban landscaping is extremely important, as they not only decorate the urban landscape, but also effectively reduce air pollution, regulate the microclimate and play an important role in improving the ecology and quality of life of residents. The purpose of the study was to determine the influence of urban environmental factors on the development and secondary metabolism of plants of the genus Cercis L. Plants growing in Kyiv (Ukraine) under conditions with different air humidity, anthropogenic load, and excess or lack of insolation were selected for the study. Plant growth processes were studied by morphometric parameters of annual shoots of Cercis siliquastrum 'Alba' and Cercis canadensis L. growing under different conditions. Morphometric methods, fluorescence microscopy, high-performance thinlayer chromatography and regression analysis were used in the study. The research data show that insufficient sunlight has a negative impact on shoot growth. The specificity of the phenolic profiles that can be used to distinguish between the species Cercis canadensis L. and Cercis siliquastrum 'Alba' was established. The principal component analysis confirmed that phenolic profiles depend on habitat conditions and affect plant growth and development. The Gaussian model was used to analyse the growth dynamics of annual shoots during the growing season, which allowed us to describe the specifics of internode formation during the growing season quite accurately. This model allowed us to detect the phenomenon of the last internodes falling off at the end of the growing season, which caused the deviation of the morphometric parameters of metameres from the normal distribution along the time axis. Anatomical studies confirmed that the separation of one or more of the last internodes was due to active corking of the internal tissues of the stem, blocking of the xylem and formation of a separating layer, which led to the fall of the shoot tip. This phenomenon shows signs of plant adaptation to low temperatures in winter. The tops of the sh...

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Section: Introductionmentioning

confidence: 99%

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2024

Ukr. j. for. wood sci.

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Recovery of Velykyi Luh through ecological restoration of the Kakhovka Reservoir

Dzyba,

Kyriienko

2024

Ukr. j. for. wood sci.

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The relevance of modern environmental issues requires comprehensive approaches to the restoration and preservation of natural ecosystems, specifically through ecological restoration as a tool to eliminate the effects of anthropogenic interventions. The purpose of this study was to survey the territory of the Kakhovka Reservoir using remote sensing and to propose a way to restore the historical territory of the Kakhovka Reservoir of Velykyi Luh. The following research methods were employed: empirical, analysis and systematisation, remote sensing, geographic information systems. The study consisted of two main stages. The first stage included an analysis of the dynamics of the historical territory of Veliky Luh, from the end of the 19th century to the present day. The second stage involved comparing the dynamics of the area’s restoration using 19th-century mapping data and 21st-century satellite imagery. The use of modern technologies, including the analysis of satellite images of the degraded area and three indices of the EO Browser software, such as the differential vegetation index, the normalised differential humidity index, and the differential water index, helped to obtain data on the state of vegetation and water resources in the study area. The analysis of the patterns between these indicators made it possible to determine the close interaction between plant growth rates and their moisture availability. The biomass growth on the territory of the Kakhovka Reservoir was measured from the moment of dewatering to November 2023. The results obtained indicate that it is possible to effectively restore the ecosystem of the Velykyi Luh through ecological restoration. This process involves the selection of optimal biotopes for the restoration of the historic area, which is a crucial step in conserving biodiversity and stabilising the natural environment in the Kakhovka Reservoir. The findings of the study on a new approach to ecological restoration based on high-precision technologies and in-depth analysis of ecosystem dynamics will contribute to the development of scientific approaches to the restoration of natural landscapes and will be an important contribution to modern environmental practice

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Vegetation and carbon sink response to water level changes in a seasonal lake wetland

Huang,

Liu,

Tian

et al. 2024

Front. Plant Sci.

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Water level fluctuations are among the main factors affecting the development of wetland vegetation communities, carbon sinks, and ecological processes. Hongze Lake is a typical seasonal lake wetland in the Huaihe River Basin. Its water levels have experienced substantial fluctuations because of climate change, as well as gate and dam regulations. In this study, long-term cloud-free remote sensing images of water body area, net plant productivity (NPP), gross primary productivity (GPP), and Fractional vegetation cover (FVC) of the wetlands of Hongze Lake were obtained from multiple satellites by Google Earth Engine (GEE) from 2006 to 2023. The trends in FVC were analyzed using a combined Theil-Sen estimator and Mann-Kendall (MK) test. Linear regression was employed to analyze the correlation between the area of water bodies and that of different degrees of FVC. Additionally, annual frequencies of various water levels were constructed to explore their association with GPP, NPP, and FVC.The results showed that water level fluctuations significantly influence the spatial and temporal patterns of wetland vegetation cover and carbon sinks, with a significant correlation (P<0.05) between water levels and vegetation distribution. Following extensive restoration efforts, the carbon sink capacity of the Hongze Lake wetland has increased. However, it is essential to consider the carbon sink capacity in areas with low vegetation cover, for the lakeshore zone with a higher inundation frequency and low vegetation cover had a lower carbon sink capacity. These findings provide a scientific basis for the establishment of carbon sink enhancement initiatives, restoration programs, and policies to improve the ecological value of wetland ecosystem conservation areas.

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Earth observation satellite data–based assessment of wetland dynamics in the Kashmir Himalaya

Cited by 3 publications

References 69 publications

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Recovery of Velykyi Luh through ecological restoration of the Kakhovka Reservoir

Vegetation and carbon sink response to water level changes in a seasonal lake wetland

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