Distribution and magnitude of geologic carbon sinks: a water balance study of the Chaotian River basin, Guilin, China

The article presents the results of the field studies and observations that carried out on the territory of the hilly, low-mountain and foothill agro landscapes of the Kyzylsu-yuzhnaya (Kyzylsu-Southern) River Basin of Tajikistan. Taking into account the high-altitude location of households and the amount of precipitation in the river basin, the annual volumes of water accumulated with the use of low-cost systems of collection and storage of precipitation have been clarified. The amount of water accumulated in the precipitation collection and storage systems has been established, the volume of water used for communal and domestic needs,the watering of livestock and the amount of water that can be used to irrigate crops in the have been determined. Possible areas of irrigation of household plots depending on the different availability of precipitation have been determined. It has been established that in wet years (with precipitation of about 10%) the amount of water collected using drip irrigation will be sufficient for irrigation of 0.13 hectares, and in dry years (with 90% of precipitation) it will be possible to irrigate only 0.03 ha of the household plot. On the basis of the basin, the total area of irrigation in wet years can be 4497 ha, and in dry years only 1087 ha. Taking into account the forecasts of population growth by 2030 and an increase in the number of households, the total area of irrigation of farmlands in wet years may reach 5703 hectares,and in dry years – 1379 hectares. Growing crops on household plots under irrigation contributes to a significant increase in land productivity and increases the efficiency of water use of the Kyzylsu-yuzhnaya basin.

Download Full-text

Assessment of climate change impacts on water balance and hydrological extremes in Bang Pakong-Prachin Buri river basin, Thailand

Environmental Research ◽

10.1016/j.envres.2020.109544 ◽

2020 ◽

Vol 186 ◽

pp. 109544 ◽

Cited By ~ 1

Author(s):

Thundorn Okwala ◽

Sangam Shrestha ◽

Suwas Ghimire ◽

S. Mohanasundaram ◽

Avishek Datta

Keyword(s):

Climate Change ◽

Water Balance ◽

River Basin ◽

Climate Change Impacts ◽

Hydrological Extremes

Download Full-text

Application of the Water Evaluation And Planning (WEAP) Model to Quantitative Water Balance Modelling in the Upper Hron River Basin (Slovakia)

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/609/1/012055 ◽

2020 ◽

Vol 609 ◽

pp. 012055

Author(s):

Miroslav Kandera ◽

Roman Výleta

Keyword(s):

Water Balance ◽

River Basin ◽

Weap Model ◽

Water Evaluation And Planning

Download Full-text

Improvement of the ESA CCI Land cover maps for water balance analysis in tropical regions: A case study in the Muda River Basin, Malaysia

Journal of Hydrology Regional Studies ◽

10.1016/j.ejrh.2021.100837 ◽

2021 ◽

Vol 36 ◽

pp. 100837

Author(s):

Mou Leong Tan ◽

Yi Lin Tew ◽

Kwok Pan Chun ◽

Narimah Samat ◽

Shazlyn Milleana Shaharudin ◽

...

Keyword(s):

Land Cover ◽

Water Balance ◽

River Basin ◽

Tropical Regions ◽

Balance Analysis ◽

Land Cover Maps

Download Full-text

Seasonal energy and water balance of a Phragmites australis-dominated wetland in the Republican River basin of south-central Nebraska (USA)

Journal of Hydrology ◽

10.1016/j.jhydrol.2011.07.010 ◽

2011 ◽

Vol 408 (1-2) ◽

pp. 19-34 ◽

Cited By ~ 25

Author(s):

J.D. Lenters ◽

G.J. Cutrell ◽

E. Istanbulluoglu ◽

D.T. Scott ◽

K.S. Herrman ◽

...

Keyword(s):

Water Balance ◽

River Basin ◽

Phragmites Australis ◽

South Central ◽

Republican River ◽

Republican River Basin

Download Full-text

Identification of the Impacts of Climate Changes and Human Activities on Runoff in the Jinsha River Basin, China

Advances in Meteorology ◽

10.1155/2017/4631831 ◽

2017 ◽

Vol 2017 ◽

pp. 1-9 ◽

Cited By ~ 2

Author(s):

Xiaowan Liu ◽

Dingzhi Peng ◽

Zongxue Xu

Keyword(s):

Water Balance ◽

River Basin ◽

Human Activities ◽

Climate Changes ◽

Balance Method ◽

Variation Method ◽

Rainfall Runoff ◽

Jinsha River ◽

Water Balance Method ◽

Double Mass

Quantifying the impacts of climate changes and human activities on runoff has received extensive attention, especially for the regions with significant elevation difference. The contributions of climate changes and human activities to runoff were analyzed using rainfall-runoff relationship, double mass curve, slope variation, and water balance method during 1961–2010 at the Jinsha River basin, China. Results indicate that runoff at upstream and runoff at midstream are both dominated by climate changes, and the contributions of climate changes to runoff are 63%~72% and 53%~68%, respectively. At downstream, climate changes account for only 13%~18%, and runoff is mainly controlled by human activities, contributing 82%~87%. The availability and stability of results were compared and analyzed in the four methods. Results in slope variation, double mass curve, and water balance method except rainfall-runoff relationship method are of good agreement. And the rainfall-runoff relationship, double mass curve, and slope variation method are all of great stability. The four methods and availability evaluation of them could provide a reference to quantification in the contributions of climate changes and human activities to runoff at similar basins in the future.

Download Full-text

Evaluation of Evapotranspiration Estimates in the Yellow River Basin against the Water Balance Method

Water ◽

10.3390/w10121884 ◽

2018 ◽

Vol 10 (12) ◽

pp. 1884 ◽

Cited By ~ 4

Author(s):

Guojie Wang ◽

Jian Pan ◽

Chengcheng Shen ◽

Shijie Li ◽

Jiao Lu ◽

...

Keyword(s):

Water Balance ◽

River Basin ◽

Land Surface ◽

Yellow River ◽

Yellow River Basin ◽

Balance Method ◽

The Yellow River ◽

Water Balance Method ◽

Global Land ◽

The Yellow River Basin

Evapotranspiration (ET), a critical process in global climate change, is very difficult to estimate at regional and basin scales. In this study, we evaluated five ET products: the Global Land Surface Evaporation with the Amsterdam Methodology (GLEAM, the EartH2Observe ensemble (E2O)), the Global Land Data Assimilation System with Noah Land Surface Model-2 (GLDAS), a global ET product at 8 km resolution from Zhang (ZHANG) and a supplemental land surface product of the Modern-ERA Retrospective analysis for Research and Applications (MERRA_land), using the water balance method in the Yellow River Basin, China, including twelve catchments, during the period of 1982–2000. The results showed that these ET products have obvious different performances, in terms of either their magnitude or temporal variations. From the viewpoint of multiple-year averages, the MERRA_land product shows a fairly similar magnitude to the ETw derived from the water balance method, while the E2O product shows significant underestimations. The GLEAM product shows the highest correlation coefficient. From the viewpoint of interannual variations, the ZHANG product performs best in terms of magnitude, while the E2O still shows significant underestimations. However, the E2O product best describes the interannual variations among the five ET products. Further study has indicated that the discrepancies between the ET products in the Yellow River Basin are mainly due to the quality of precipitation forcing data. In addition, most ET products seem to not be sensitive to the downward shortwave radiation.

Download Full-text