The Changes of Wetland Network Pattern Associated with Water Quality in the Pearl River Delta, China

摘要: In the last 30 years, water environment and wetland patterns have been experiencing dramatic changes resulted from rapid urbanization, industrialization population growth in Pearl River Delta. To investigate of network pattern associated with quality this region, structure indices intercepting amount pollutant were calculated paper. The results showed that there four type corridor networks, “inverted V”, “#”, “main river-way”, “man-made ditch” according to river wetlands distribution characteristics. During period 1979–2009, channel (Dr, α, β, γ) all networks a decreased tendency. For parameter CODMn, NON, NHN, TP, V” had largest intercepted amount, second is “#” type, then river-way” type. also higher amount. As network, pollutants by per unit area (ΔAW) was positive correlated density, complexity, connectivity, linkage, near index paddy field reservoir. There significant correlations between ΔAW linkage network; but negative correlation existed density. Similar appeared besides