Effects of agricultural activities on the temporal variations of streamflow: trends and long memory

Chen, Chuke1,2; Tian, Yong1,2; Zhang, You-Kuan1,2; He, Xin3; Yang, Xiaofan4; Liang, Xiuyu1,2; Zheng, Yi1,2; Han, Feng1,2; Zheng, Chunmiao1,2; Yang, Chen1,2

2019-09

10.1007/s00477-019-01714-x

STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT   Impact Factor & Quartile

1436-3240

1436-3259

Effects of agricultural activities on temporal variations in streamflow were investigated based on an integrated hydrological model in the Heihe River Basin (HRB). De-trended fluctuation analysis was conducted using the simulated time series of the daily streamflow at 13 observation points along the Heihe River. Both the original and deseasonalized streamflow were obtained and analyzed. We found that temporal variations of the natural watershed streamflow without the interference of agricultural activities are nonstationary, but become relatively stationary when agricultural activities occur. This indicates a weakened damping effect of the hydrological system on hydrological signals. Agricultural activities mainly affect the trends in streamflow, as the trends may have been gradually removed with increasing agricultural activities. Therefore, long-term correlation of the streamflow decreases and eventually converges to the long memory, which remains invariant under the disturbance of agricultural activities. A practical significance of the results from this study for the water resources management in the agricultural regions is that more attention should be given to the trend identification, especially when predicting extreme hydrological events, such as drought or flood.

Temporal variations Streamflow Agricultural activities Trends Long memory Hydrological predictions

SCI ; EI

English

First ; Corresponding

Special Funds for the Cultivation of Guangdong College Students' Scientific and Technological Innovation[pdjh0038]

Engineering ; Environmental Sciences & Ecology ; Mathematics ; Water Resources

Engineering, Environmental ; Engineering, Civil ; Environmental Sciences ; Statistics & Probability ; Water Resources

WOS:000485973900004

SPRINGER

20193207291266

Stream flow ; Time series analysis ; Water resources

Waterways:407.2 ; Water Resources:444 ; Agricultural Equipment and Methods; Vegetation and Pest Control:821 ; Mathematical Statistics:922.2

ENGINEERING

Web of Science

1.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Guangdong Prov Key Lab Soil & Groundwater Pollut, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Sch Environm Sci & Engn, State Environm Protect Key Lab Integrated Surface, Shenzhen 518055, Peoples R China
3.China Inst Water Resources & Hydropower Res, Dept Water Resources, Beijing 100038, Peoples R China
4.Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China

Chen, Chuke,Tian, Yong,Zhang, You-Kuan,et al. Effects of agricultural activities on the temporal variations of streamflow: trends and long memory[J]. STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT,2019,33(8-9):1553-1564.

Chen, Chuke.,Tian, Yong.,Zhang, You-Kuan.,He, Xin.,Yang, Xiaofan.,...&Yang, Chen.(2019).Effects of agricultural activities on the temporal variations of streamflow: trends and long memory.STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT,33(8-9),1553-1564.

Chen, Chuke,et al."Effects of agricultural activities on the temporal variations of streamflow: trends and long memory".STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT 33.8-9(2019):1553-1564.