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Because of excessive exploitation and a rapidly growing population in the past, the river has been plagued by droughts, water and soil erosion disasters in its middle and upper reaches, as well as sediment, floods and a rising riverbed caused by heavy silt in its lower reaches.

Under the agreements, China's Yangtze River Delta Circular Economy Technology Research Institute and U.S. giant Coca-Cola will work together to develop a way to use agricultural waste to produce Coke's plastic bottles while Peking University will cooperate with New York Institute of Technology to protect groundwater resources.

"It is an objective fact that the China-Germany relationship has been in the vanguard of the ties between China and Europe in many aspects," Chinese Vice Foreign Minister Song Tao said at a recent news briefing on Li's visit.

According to a method of measurement designed by an NBS research group, the China Innovation Index (CII) in 2011 reached 139.6, marking an average yearly growth of 5.7 percent from a base reading of 100 in 2005, said a statement on the NBS website.

Heads of local CPC committees bear the major responsibilities to implement the campaign and will be held responsible for any failure, said Liu.