inscription
PORTAIL D'INFORMATION GÉOGRAPHIQUE

A study on the annual runoff change and its relationship with water and soil conservation practices and climate change in the middle Yellow River basin

Auteur(s) et Affiliation(s)

CHANGXING, S.
Key Lab. of Water Cycle and Related Land Surface Processes, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine
YUANYUAN, Z.
Key Lab. of Water Cycle and Related Land Surface Processes, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine
Graduate School of Chinese Academy of Sciences, Beijing, Chine
XIAOLI, F.
Key Lab. of Water Cycle and Related Land Surface Processes, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine
Graduate School of Chinese Academy of Sciences, Beijing, Chine
WENWEI, S.
Key Lab. of Water Cycle and Related Land Surface Processes, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine
Graduate School of Chinese Academy of Sciences, Beijing, Chine


Description :
Based on the long-term hydrological and meteorological series, DEM, soil database and documents of soil conservation measures of the middle Yellow River, investigations are made on the spatial and temporal changes of runoff and the impact of 11 factors, which include rainfall, temperature, terrain slope, drainage density, gravel, sand, silt, and organic carbon content in soil, water consumption, and soil conservation measures. The results show that the total runoff generated from the middle Yellow River had a decreasing trend in the past 60 years, with 2 abrupt falls around the years 1971 and 1991. The results of the correlation analysis of the temporal series of runoff coefficient and influencing factors suggest that climate change, hydraulic engineering and soil conservation measures, were all the major causes of runoff reducing in the second half of the last century in the middle Yellow River. The contributions of climatic and human factors to runoff reduction are quantified.


Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2013, vol. 100, p. 31-41, nombre de pages : 11, Références bibliographiques : 30 ref.

Date :
2013

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena

Langue :
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)