Weibei upland, located in southern part of the Loess Plateau, is a commercial apple production base in China. The enlargement of apple-planting area has a great
Concentrations of heavy metals (Cu, Pb, Zn, Cr and Cd), and phosphorous (P) weredetermined in surface tidal flat sediments of the Yangtze estuary and Shanghai c
In order to realize sustainable development of the arid area of Northwest China, rational water resources exploitation and optimization are primary prerequisite