There exists previous studies on the relationship between land use and cover change (LUCC) and water quality (WQ) on a watershed scale. Such studies had indicated that their associations are dependent upon the spatial scale and water quality item. As for the decision-makers, they want to know the result on a wider spatial scale (e.g. national or continental), and know the relative weights of the main factors controlling spatial changes of WQ. Such studies at a larger scale will benefit governors making scientific and reasonably macro-level policy.
@Zhao, I assure you I have gone through certain studies covering whole countries of Southern Europe, Middle East and others where Land Use and Land Cover either as a single factor or one of several factors are used to bear on surface as well as groundwater. You may search these studies on internet.
Dear Prof. Mohammad:
Many thanks for your response, and I will try to find your related studies on a larger scale.
happy new year in advance!
sincerely, zhao
Certainly LULC is a key factor affecting water quality. You can search "export coefficient" method as a start to review literatures that link LULC and nutrients export from terrestrial ecosystems.
Dear Zhao,
The below paper may be useful for you.
"Landscape ecological approach to the relationships of land use patterns in
watersheds to water quality characteristics"
By Sang-Woo Lee. et al. 2009. Landscape and Urban Planning 92:80–89.
Regards,
Raoof
Dear Dr. Tian
Thanks very much for your response. But what I want is the study focused on a larger scale, inclusive of nation or continent.
Happy a good year for you!
sincerely, zhao
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