What Is One Of The Main Effects Of Industrial Growth On The Chang Jiang River In China?
journal commodity
Biogeochemistry
, pp. i-18 (18 pages)
Published By: Springer
https://www. jstor .org/stable/1469870
Dissolved and particulate, organic and inorganic Northward, P and Si were measured in the main stream and 15 major tributaries of the Changjiang (Yangtze River) in April-May 1997. The nutrient concentrations are related to water discharge, suspended particulate thing, anthropogenic activities etc. The nutrient levels were quite low in the upper reaches, and significantly increased in the main stream in a region of 2000-3000 km inland from the river mouth. The northern tributaries contribute more nutrients to the Changjiang than the southern tributaries. Based on atomic ratios of N, P and Si, the limiting food in the Changjiang drainage basin was P. The nutrient yields in the Changjiang and its major tributaries indicated high rates of send of nutrients within the watersheds. Concentrations of nitrate in the Changjiang have increased, simply at that place have been no systematic trends for phosphate and silicic acid since 1980. The DIN/P ratios and DIN/Si ratios increased. The DIN/P and DIN/Si ratios may be expected to proceed to increment after construction of the "Three Gorges Dam", which will do a great deal of influence on the ecological environment of the Changjiang estuary and its adjacent sea.
Biogeochemistry publishes original papers and occasional reviews dealing with biotic controls on the chemistry of the surround, or with the geochemical control of the structure and part of ecosystems. Cycles are considered, either of individual elements or of specific classes of natural or anthropogenic compounds in ecosystems. Particular emphasis is laid on the interactions of element cycles. Global aspects of biogeochemistry are covered in the grade of piece of work on the global carbon and sulfur cycles, for example, and studies on both natural and artificial ecosystems are published when they contribute to a general understanding of biogeochemistry. Biogeochemistry is an of import, international journal on a topic of acute current interest. The impact factor: 2.125 (2004) Section 'Environmental Sciences': Rank 17 of 134 Section 'Geosciences': Rank 16 of 128
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Source: https://www.jstor.org/stable/1469870
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