Observed trends of climate and land cover changes in Lake Baikal basin

Dorjsuren, Batsuren; Yan, Denghua; Wang, Hao; Chonokhuu, Sonomdagva; Enkhbold, Altanbold; Davaasuren, Davaadorj; Girma, Abel; Abiyu, Asaminew; Jing, Lanshu; Gedefaw, Mohammed

doi:10.1007/s12665-018-7812-9

Cited by 20 publications

(20 citation statements)

References 40 publications

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“…e global mean air temperature has amplified by 0.85°C per year from 1880 onwards, which is expected to increase in the near future [34,35]. e temperature of large inland water areas around the world has been promptly heating ever since 1980, by a rate of 0.05 ± 0.012°C/year and by the maximum rate of 0.1 ± 0.011°C/year [36]. ere has been an abruptly upward trend of average annual air temperature detected in the upper reaches of Huai river basin via 1.2°C or 0.021°C/year during the deliberated chronological period from 1960 to 2016 (Figure 3(b)).…”

Section: Discussionmentioning

confidence: 99%

Trends of Hydroclimate Variables in the Upper Huai River Basin: Implications of Managing Water Resource for Climate Change Mitigation

Girma

Yan

Wang

et al. 2020

Advances in Meteorology

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The present study attempted to investigate the trends of mean annual temperature, precipitation, and streamflow changes to determine their relationships in the upper Huai river basin. The Mann–Kendall (MK), Sen’s slope test estimator, and innovative trend detection (ф) (ITA) methods were used to detect the trends. According to the findings, average annual precipitation shows a descending trend (ф = −0.17) in most stations. An increasing trend was found only in Fuyang station (ф = 1.02). In all stations, the trends of mean annual temperature (ф = 0.36) were abruptly increased. During the past 57 years, the mean air temperature has considerably increased by 12°C/10a. The river streamflow showed a dramatic declining trend in all stations for the duration of the study period (1960–2016) (ф = −4.29). The climate variability in the study region affects the quantity of the streamflow. The river streamflow exhibits decreasing trends from 1965 onwards. The main possible reason for the declining stream flow in the study area is the declining amount of precipitation on some specific months due to the occurrence of climate change. The outcomes of this study could create awareness for the policymakers and members of the scientific community, informing them about the hydroclimatic evolutions across the study basin, and become an inordinate resource for advanced scientific research.

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Section: Discussionmentioning

confidence: 99%

Trends of Hydroclimate Variables in the Upper Huai River Basin: Implications of Managing Water Resource for Climate Change Mitigation

Girma

Yan

Wang

et al. 2020

Advances in Meteorology

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“…e analysis evaluates the changes in land cover over time to establish the relationship between land cover changes and spatial patterns using overlapping operation. e analysis was conducted using postclassi cation comparison method where Landsat image for each year was classi ed and labeled independently followed by a comparison using an overlay procedure [21].…”

Section: Meteorology Data Sourcesmentioning

confidence: 99%

“…It is worth noting here that the widest classi cation accuracy used by most researchers is in the form of an error matrix, which is used to derive a series of descriptive and analytical statistics. As described in [21,23], assessment of classi cation accuracy for 2001 and 2013 images was conducted to determine the quality of information derived from the data. It was coupled with previous knowledge of the area and used as reference data.…”

Section: Meteorology Data Sourcesmentioning

confidence: 99%

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Impacts of Recent Climate Trends and Human Activity on the Land Cover Change of the Abbay River Basin in Ethiopia

Cherinet

Yan

Wang

et al. 2019

Advances in Meteorology

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The Abbay River Basin, which originates in Ethiopia, is a major tributary and main source of the Nile River Basin. Land cover and vegetation in the Abbay River Basin is highly susceptible to climate change. This study was conducted to investigate the trends of climate change for a period of thirty-six years (1980–2016) within selected stations of the basin by using the innovative trend analysis method, Mann–Kendall test, and Sen’s slope estimator test to investigate the mean annual precipitation and temperature variables. Changes in land cover and vegetation in the Abbay River Basin were studied for a period of thirteen years (2001–2013) by using remote sensing, GIS analysis, land cover classification, and vegetation detection methods to assess the land cover and vegetation in the basin. In addition, Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI), and Transformation Matrix were employed to analyze the spatial and temporal patterns of land cover and vegetation impacted by changes in climate. The result reflects that the trend of average annual temperature was remarkably increased (Φ = 0.12, Z = 0.75) in the 36-year period, and the temperature was increased by 0.5°C, although precipitation had slightly decreased during the same period. In the thirteen years’ period, forest land and water resource decreased by 3429.62 km2 and 81.45 km2, respectively. In contrast, an increment was observed in grassland (2779.33 km2), cultivated land (535.34 km2), bare land (43.08 km2), urban land (0.65 km2), and wetland (152.66 km2) in the same period. In the study, it was also observed a decrease of an NDVI value by 0.1 was observed in 2013 in the southern part of the basin. The findings of the present study illustrate a significant change in eco-hydrological conditions in the ARB with an adverse impact on the environment. Hydroclimatic changes caused the increase in temperature and decreasing trend in precipitation which significantly impacted the land cover and vegetation in the basin. The changes in land cover were mostly caused by global and local climate influence which mainly affects the hydroclimate and eco-hydrology systems of the basin. The result is consistent with that of the previous studies conducted elsewhere. The findings of this paper could help researchers to understand the eco-hydrological condition of the study basin and become a foundation for further studies.

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“…Thus, investigating changes in river discharge considering future climate conditions to understand the effects of climate change. River discharge and climate variability have a huge economic impact particularly on hydropower generation and rained agriculture [7]. It is therefore imperative to study the patterns of climate trends in the Abay river basin and its impacts on water availability in the region.…”

Section: Introductionmentioning

confidence: 99%

Climate Trends of Temperature, Precipitation and River Discharge in the Abbay River Basin in Ethiopia

Cherinet¹,

Yan²,

Wang³

et al. 2019

JWARP

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Projecting future changes of streamflow in the Abby River Basin (ARB) is important for planning and proper management of the basin system. The current study conducted in five stations of the Abbay river basin, and investigated the annual temperature, precipitation, and river discharge variability using the Innovative trend analysis method, Mann-Kendall, and Sen's slope test estimator. The result showed a slightly increasing trend of annual precipitation in Assoa (Z = 0.71), Bahir Dar (Z = 0.13), and Gonder (Z = 0.26) stations, while a significant increasing trend was observed in Nedgo (Z = 2.45) and Motta (Z = 1.06) stations. Interestingly, the trend of annual temperature in Assosa (Z = 5.88), Bahir Dar (Z = 3.87), Gonder (Z = 4.38), Nedgo (Z = 4.77), and Motta (Z = 2.85) was abruptly increased. The average mean temperature has increased by 0.2˚C in the past 36 years (1980 to 2016). The extreme high temperature was observed in the semi-dry zone of northern Ethiopia. During the study period, a significant declining trend of the river discharge was recorded, and the river discharge was sharply decreased from 1992 onwards. The results of the current study showed annual variability of river discharge, precipitation, and temperature of the study area of the basin that could be used as a basis for future studies.

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Observed trends of climate and land cover changes in Lake Baikal basin

Cited by 20 publications

References 40 publications

Trends of Hydroclimate Variables in the Upper Huai River Basin: Implications of Managing Water Resource for Climate Change Mitigation

Trends of Hydroclimate Variables in the Upper Huai River Basin: Implications of Managing Water Resource for Climate Change Mitigation

Impacts of Recent Climate Trends and Human Activity on the Land Cover Change of the Abbay River Basin in Ethiopia

Climate Trends of Temperature, Precipitation and River Discharge in the Abbay River Basin in Ethiopia

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