Healthy river and its indication, criteria and standards

Auteur(s) et Affiliation(s)

LIU, C.

College of Water Sciences, Normal Univ., Beijing, Chine

Inst. of Geographic Sciences and Natural Resources Research, Beijing, Chine

LIU, X.

Yellow River Conservancy Commission, Zhengzhou, Chine

Description :
The standards to be adopted for a healthy river should be determined according to the requirements for maintaining river's normal natural functions and the extent whether the social and natural functions could perform in a balanced way, and also the standards adopted should be adjusted according to the change of the given conditions. The key factor of river health is the enough and clean flow. The AA. stressed that human activities would hurt the river health which include excessive water diversion and excessive power generation from the river, improper regulation of flood and sediment, and over discharge of sewage into the river and over change in fish habitat. In China, the criteria include not only ecological criteria but also riverbed deposition degree, riverbed morphology, water quality etc. Taking the Yellow River as a case, this paper also discussed the method to identify what are the standards of a healthy river as well as environmental flows.

Type de document :
Article de périodique

Source :
Journal of geographical sciences. Acta geographica sinica, issn : 1009-637X, 2009, vol. 19, n°. 1, p. 3-11, nombre de pages : 9, Références bibliographiques : 11 ref.

Date :
2009

Editeur :
Pays édition : Chine

Langue :
Anglais