Research on regional water demand prediction of the upper and middle reaches of The Pearl River Basin based on system dynamics

Abstract. This study explores the teleconnection of two climatic patterns, namely the El Niño–Southern Oscillation (ENSO) and the Indian Ocean Dipole (IOD), with hydrological processes over the Pearl River basin in southern China, particularly on a sub-basin-scale basis. The Variable Infiltration Capacity (VIC) model is used to simulate the daily hydrological processes over the basin for the study period 1952–2000, and then, using the simulation results, the time series of the monthly runoff and soil moisture anomalies for its ten sub-basins are aggregated. Wavelet analysis is performed to explore the variability properties of these time series at 49 timescales ranging from 2 months to 9 yr. Use of the wavelet coherence and rank correlation method reveals that the dominant variabilities of the time series of runoff and soil moisture are basically correlated with IOD. The influences of ENSO on the terrestrial hydrological processes are mainly found in the eastern sub-basins. The teleconnections between climatic patterns and hydrological variability also serve as a reference for inferences on the occurrence of extreme hydrological events (e.g., floods and droughts).

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The impact of natural weathering and mining on heavy metal accumulation in the karst areas of the Pearl River Basin, China

The Science of The Total Environment ◽

10.1016/j.scitotenv.2020.139480 ◽

2020 ◽

Vol 734 ◽

pp. 139480 ◽

Cited By ~ 1

Author(s):

Weihua Wu ◽

Shuyi Qu ◽

Werner Nel ◽

Junfeng Ji

Keyword(s):

Heavy Metal ◽

River Basin ◽

Metal Accumulation ◽

Heavy Metal Accumulation ◽

Pearl River ◽

Pearl River Basin ◽

Karst Areas ◽

The Pearl River ◽

The Impact ◽

The Pearl River Basin

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Comparison of Pb (II) and Cd (II) micro-interfacial adsorption on fine sediment in the Pearl River Basin, China

International Journal of Sediment Research ◽

10.1016/j.ijsrc.2020.08.006 ◽

2020 ◽

Author(s):

Qunsheng Fang ◽

Zhihe Chen ◽

Jianpeng Zheng ◽

Zhihua Zhu

Keyword(s):

River Basin ◽

Fine Sediment ◽

Pearl River ◽

Pearl River Basin ◽

The Pearl River ◽

Interfacial Adsorption ◽

The Pearl River Basin

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China's political system, economic reform and the governance of water quality in the Pearl River Basin

Federal Rivers ◽

10.4337/9781781955055.00030 ◽

2014 ◽

pp. 261-279 ◽

Cited By ~ 3

Author(s):

Andre Silveira

Keyword(s):

Water Quality ◽

River Basin ◽

Economic Reform ◽

Political System ◽

Pearl River ◽

Pearl River Basin ◽

The Pearl River ◽

The Pearl River Basin

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Effects of atmospheric CO2 consumption on rock weathering in the Pearl River basin, China

E3S Web of Conferences ◽

10.1051/e3sconf/20199806011 ◽

2019 ◽

Vol 98 ◽

pp. 06011

Author(s):

Xiaoqun Qin ◽

Zhongcheng Jiang ◽

Liankai Zhang ◽

Qibo Huang ◽

Pengyu Liu

Keyword(s):

River Basin ◽

Carbonate Rock ◽

Isotopic Analysis ◽

Climatic Conditions ◽

Pearl River ◽

Rock Weathering ◽

Pearl River Basin ◽

Average Value ◽

The Pearl River ◽

The Pearl River Basin

Atmospheric CO2 is absorbed and dissolved in water via karst processes not only in carbonate rock areas, but in all rock areas of the earth. The chemical and isotopic analysis results, particularly of strontium, for water samples collected from eleven stations along the Pearl River, four times over the course of one year, showed that due to weathering by carbonate or silicate rocks, HCO3-, Ca2+, and Mg2+ have become the main ions in the river water. Through river ion stoichiometric and flux calculations, the carbonate rock weathering rate and atmospheric CO2 consumption were found to be 27.6 mm/ka and 540 x 103 mol/km2.a, which are 10.8 and 6.7 times the corresponding values for silicate rock. With the beneficial climatic conditions for rock erosion and large areas of carbonate rock in the Pearl River Basin, the atmospheric CO2 consumption value is about 2.6 times the average value for the 60 major rivers in the world.

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