نتایج جستجو برای: land quality

تعداد نتایج: 860420  

Journal: :caspian journal of environmental sciences 2009
sh. khan z. paydar f. mirzaei

researchers of csiro land and water in griffith in australia have found a way to repeatedly reuse drainage water to grow crops. in the process the system will concentrate the salt in the water to a manageable level which can then be used or stored in an environmentally friendly manner. the process, known as sequential biological concentration, is based on a novel system for land, based treatmen...

2015
Jorge G. Álvarez-Romero Robert L. Pressey Natalie C. Ban Jon Brodie Maura (Gee) Geraldine Chapman

Human-induced changes to river loads of nutrients and sediments pose a significant threat to marine ecosystems. Ongoing land-use change can further increase these loads, and amplify the impacts of land-based threats on vulnerable marine ecosystems. Consequently, there is a need to assess these threats and prioritise actions to mitigate their impacts. A key question regarding prioritisation is w...

ژورنال: علوم آب و خاک 2009
امیرنژاد, حمید, رفیعی, حامد,

Land and its size are important as the most basic factors of production in agriculture .Fragmentation is one of the main problems that rice producers of Mazandaran province are confronted with. Non-efficiency in farm management, inability in effective using of agriculture technology and machinery, and low range productivity of production are all related to land fragmentation. In order to overco...

Journal: :Environmental monitoring and assessment 2014
Ying Ouyang Jia En Zhang Lihua Cui

Groundwater is connected to the landscape above and is thus affected by the overlaying land uses. This study evaluated the impacts of land uses upon groundwater quality using trilinear analysis. Trilinear analysis is a display of experimental data in a triangular graph. Groundwater quality data collected from agricultural, septic tank, forest, and wastewater land uses for a 6-year period were u...

2004
Connie Hall Eric Bremer

s. Bloodworth, H., and T. Sobecki. 2002. Land use biodiversity index as a soil quality indicator. In Making conservation tillage conventional: Building a future on 25 years of research; Proceedings of 25 Annual Southern Conservation Tillage Conference for Sustainable Agriculture, Auburn, AL, USA, 24-26 June, 2002, Pp.219-221. E. van Santen, editor. Auburn, AL: Alabama Agricultural Experiment St...

2017
Fang Xu Annette Otte Kristin Ludewig Tobias W. Donath Sarah Harvolk-Schöning

To analyze the changes in the Upper Danube Floodplain, we used aerial photos to quantify the change of landscape pattern from 1963 to 2010. We focused on typical floodplain habitats, i.e., riparian forest and floodplain grassland. We used landscape metrics and transformation matrix to explore changes in land cover structure and composition. The active floodplain experienced increasing fragmenta...

2017
Qin Tian Takeshi Taniguchi Wei-Yu Shi Guoqing Li Norikazu Yamanaka Sheng Du

Similar land-use types usually have similar soil properties, and, most likely, similar microbial communities. Here, we assessed whether land-use types or soil chemical properties are the primary drivers of soil microbial community composition, and how changes in one part of the ecosystem affect another. We applied Ion Torrent sequencing to the bacterial and fungal communities of five different ...

2011
Joe Magner

Control of non-point source (NPS) water pollution remains elusive in the United States (US). Many US water-bodies which have been primarily impacted by NPS pollution have not achieved water quality goals set by Clean Water Act. Technological advances have been made since 1972, yet many water resources fail to meet water quality standards. Common Pool Resources Theory is considered to understand...

2011
Oswaldo Villena Carpio D. Fath

Problem statement: This research assesses the direct effects of urban expansion on land cover/use, river flow, water quality and the indirect effects of these variables in the rate of gastrointestinal disease in people in Arequipa, Peru through the combined use of satellite remote sensing and geographic information systems. Approach: It also uses information about demographic changes, hydrologi...

2010
Johannes van der Kwast Josefien Delrue Luc Bertels Guy Engelen

The Xplorah Planning Support Systems has been under development since 2000 to provide the Puerto Rico Planning Board with an advanced capacity to forecast land-use changes as the result of various scenarios and to assess alternative planning and policy options in their fully integrated, dynamic and spatial context. To fully deploy the analytic capabilities of Xplorah, high quality geographicall...

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