Effects of environmental and biotic factors on soil respiration in a coastal wetland in the Yellow River Delta, China. Impacts of landscape patterns on heavy metal contamination of agricultural top soils in the Pearl River Delta, South China. Land use pattern change in Ejin Delta of Northwest China during 1930-2010. Net ecosystem CO2 exchange and its environmental regulation mechanisms in a reed wetland in the Yellow River Delta of China during the growth season. Quality level assessment of lowly efficient Tamarix chinensis secondary shrubs in Laizhou Bay of Yellow River Delta. SPATIAL ANALYSIS OF ARTIFICIAL LANDSCAPE TRAN SFORM IN FENGGANG TOWN,DONGGUAN CITY