We hypothesized that nutrient concentrations in streamwater within different landuse areas may be influenced by near-stream groundwater. We sampled streamwater and near-stream groundwater at 8 urban and 5 non-urban locations monthly from December 2000 through December 200 1 in urbanizing Johnson Creek watershed in Portland, Oregon. We compared soluble reactive phosphorus (SRP), total phosphorus...

Hubei Province is gradually carrying out the preparation of five levels and three types territorial spatial planning, to scientifically layout construction space, agricultural space ecological strengthen guiding constraining role planning for all planning. At same time, in order promote beautiful countryside rural revitalization, village also progress; according categories belongs township-leve...

Land-use changes involve important economic and environmental effects with implications for international trade, global climate change, wildlife, and other policy issues. We use an econometric model to identify factors driving land-use change in the United States between 1982 and 1997. We quantify the effects of net returns to alternative land uses on private landowners’ decisions to allocate l...

Aiming to solve the problem of low efficiency and single objective impact development (LID) layout, objectives stormwater control, water quality purification, economic cost are selected present performance LID practices. A novel method evaluating urban runoff pollutant concentration is put forward based on land-use type each catchment. Shenzhen City as study area, three scenarios designed contr...

Most lowland-stream drainage-basins have a high population density and the landuse is very intensive. The permeable subsoil acts as an integrating medium, thus providing a widespread dispersal of leached nutrients and transmission of watertable lowering. This leads to desiccation and eutrophication of stream ecosystems. For providing suggestions with respect to cost-effective and sustainable sp...

Geospatial data form the foundation of an information-based society. Cell-based raster data are well suited to represent geographic phenomena and help model landcover and landuse characteristics and relevant attributes. Information technologies capable of credible raster map analysis and change detection are needed for integrated regional assessment and development in the 21st Century equipped ...