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process-based and distributed model for nutrient dynamics in river basin: Development, testing and applications

Journal Articles & Books
декабря, 2012
Japan

A new grid-based model of nutrient dynamics and transport process has been developed within a distributed hydrological modelling framework and integrated with river network module. The key aspect of this development is a process based description of nutrient generation process on the land surface and its related nutrient release with hydrologic runoff and soil erosion.

Ecological classification of land and conservation of biodiversity at the national level: The case of Italy

Journal Articles & Books
декабря, 2012
Italy

The aims of this study are to describe the ecological classification of land in Italy and to show how the resulting land units can act as reliable frameworks for coarse scale environmental analyses that can be used to implement national conservation strategies. We first collected, homogenised and drew physical thematic maps, which were then linked to biological and human features. We then performed a gap analysis of land heterogeneity compared with Natural Protected Areas and Natura2000 network on the basis of three categories: Total gaps, Partial gaps, and Protected.

Horse riding posing challenges to the Swedish Right of Public Access

Journal Articles & Books
декабря, 2012
Sweden

Increasing numbers of horses are being kept for sports and leisure purposes in peri-urban areas throughout the Western world. This expansion of the equestrian sector represents a multifunctional transition, with new production of rural goods and services and increasing influence on land use. In Sweden, the number of horses has increased from 70,000 to approximately 300,000 over the last 30 years. This increase is putting pressure on the traditional Right of Public Access, an old custom allowing the public to walk, cycle or ride on private or state-owned property.

Land suitability evaluation for development using a matter-element model: A case study in Zengcheng, Guangzhou, China

Journal Articles & Books
декабря, 2012
China

Land suitability evaluation can assist in the efficient use of land resources at a regional level. This is an important issue because of the pressures that an increasing population and economic growth have put on limited land resources. Matter-element theory, which was first put forward by the Chinese mathematician Cai Wen, has shown potential for solving incompatibility problems.

Net exchanges of CO₂, CH₄ and N₂O between marshland and the atmosphere in Northeast China as influenced by multiple global environmental changes

Journal Articles & Books
декабря, 2012

Natural wetland ecosystem plays an important role in global climate change due to its large amounts of stored carbon and nitrogen. The Sanjiang Plain, Northeast China, encompasses large area of natural freshwater marshy wetlands. However, the magnitude and temporal patterns of major greenhouse gases (GHGs: CO₂, CH₄ and N₂O) in this region remain far from certain. Here we used a process-based ecosystem model to examine GHGs fluxes and their underlying mechanisms in the marshland across the Sanjiang Plain over the period 1949–2008.