نتایج جستجو برای: soil quality index

تعداد نتایج: 1270125  

2011
Yanli Zhang Ramanathan Sugumaran Matthew McBroom John DeGroote Rebecca L. Kauten Paul K. Barten

In order to maintain a proper balance between development pressure and water resources protection, and also to improve public participation, efficient tools and techniques for soil and water conservation projects are needed. This paper describes the development and application of a web-based watershed management spatial decision support system, WebWMPI. The WebWMPI uses the Watershed Management...

Journal: :Water resources research 2015
Aldrich Castillo Fabio Castelli Dara Entekhabi

Basin hydrologic response is a function of soil moisture distributional featuresAn information-based dimensionless index of hydrologic complexity is appliedThe complexity index characterizes soil moisture distributional features.

The successive droughts and the degradation of water and soil resources quality (salinity and toxicity of nutrients like boron) are serious challenges for tropical fruit tree cultivation such as mango in Hormozgan province south of Iran. Using some nutrients like silicon is believed to be effective in order to mitigate the aforementioned problem. Hence, an experiment was carried out in which si...

2006
C. A. Murphy B. L. Foster M. E. Ramspott K. P. Price

Management regimes of varying types and intensities can have profound impacts on grassland soil quality. Plus, there has recently been increased interest in finding soil quality indicators that are reflective of historical and current land management. We surveyed soil quality of privately owned grasslands in northeastern Kansas differing in their cultivation histories and current land-use (cool...

2004
Susan S. Andrews Douglas L. Karlen

bold et al., 1998). Because improper management can lead to deleterious changes in soil function, a need for Erosion rates and annual soil loss tolerance (T) values in evaluatools and methods to assess and monitor SQ was recogtions of soil management practices have served as focal points for soil quality (SQ) research and assessment programs for decades. Our obnized (e.g., Doran and Jones, 1996...

Journal: :The Science of the total environment 2009
Lauric Cécillon Nathalie Cassagne Sonia Czarnes Raphaël Gros Michel Vennetier Jean-Jacques Brun

We investigated the power of near infrared (NIR) analysis for the quantitative assessment of soil quality in a wildfire chronosequence. The effect of wildfire disturbance and soil engineering activity of earthworms on soil organic matter quality was first assessed with principal component analysis of NIR spectra. Three soil quality indices were further calculated using an adaptation of the meth...

2012
Jing-wei Jin Yue-fei Xu Hui-chun Ye Chong-yang Shen Yuan-fang Huang

The objective of this study was to explore the spatial variation of soil fertility quality and the influence factors of human land use and soil management practices on soil fertility quality in North China cities' urban fringe of Beijing using data for 2007 and grey relational analysis (GRA) and geographic information systems (GIS). Soil total nitrogen, available phosphorus, available potassium...

Journal: :Kvasny Prumysl 2002

2000
Jeffrey E. Herrick

Soil quality appears to be an ideal indicator of sustainable land management. Soil is the foundation for nearly all land uses. Soil quality, by definition, reflects the capacity to sustain plant and animal productivity, maintain or enhance water and air quality, and promote plant and animal health. By reflecting the basic capacity of the soil to function, it integrates across many potential use...

Journal: :بهداشت و توسعه 0
حسین جعفری منصوریان احمد رجبی زاده محمد جعفری مدرک شیدوش دولتشاهی بهنام حاتمی

background: contamination of swimming pools’ water can lead to the transfer of different diseases to humans. the aim of this study was to investigate the quality of water in kerman swimming pools. methods: in this cross-sectional study, sampling from swimming pools was performed before and after swimming, every week. total number of samples collected was 150 samples. samples were investigated i...

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