نتایج جستجو برای: land quality

تعداد نتایج: 860420  

ژورنال: علوم آب و خاک 2015
زارعی, وریا, شکل‌آبادی, محسن,

The aim of the study was to investigate the effects of land use on soil quality parameters using multivariate statistical analysis. Soil samples (0-25 and 25-50 cm depths) were taken from three land uses in forest area of Marivan including forest, rangeland, and cultivated land. Soil characteristics of pH, EC, sand, silt, clay and CaCO3 content, water-stable aggregates and their organic carbon ...

Journal: :آب و خاک 0
حسین شهاب آرخازلو حجت امامی غلامحسین حق نیا علیرضا کریمی

abstract soil quality is an essential concept for maximum agriculture production without environmental destruction. studying soil physical quality indicators, that express soil structural stability and soil air-water balance in root zone, is one of the most important aspects of soil quality. so determination of optimal range for pore volume distribution is important and this research carried ou...

2015
Jiao Ding Yuan Jiang Lan Fu Qiuzhi Peng Muyi Kang Richard Skeffington

Understanding the relationship between land use and surface water quality is necessary for effective water management. We estimated the impacts of catchment-wide land use on water quality during the dry and rainy seasons in the Dongjiang River basin, using remote sensing, geographic information systems and multivariate statistical techniques. The results showed that the 83 sites can be divided ...

Journal: :international journal of environmental research 2014
t. ceccarelli s. bajocco l. luigi perini l. luca salvati

urban expansion and agriculture intensification are relevant drivers in land degradation (ld)processes in europe due to net loss of land, soil sealing, landscape fragmentation and other negative effects on the environment. this paper explores changes (or “trajectories” of change) in land use and cover (lulc) and their relationship with the consumption of soils in emilia-romagna (northern italy)...

Journal: :Environmental Modelling and Software 2006
C. Borrego H. Martins O. Tchepel L. Salmim A. Monteiro A. I. Miranda

Despite the progress made in controlling local air pollution, urban areas show increasing signs of environmental stress and air quality is one of the major concerns. The findings of several studies provide evidence that the shape of a city and the land use distribution determine the location of emission sources and the pattern of urban traffic, affecting urban air quality. This work focuses on ...

Journal: :محیط زیست طبیعی 0
فاطمه باطنی دانشجوی دکتری سیما فاخران اصفهانی هیات علمی گروه محیط زیست دانشکده منابع طبیعی دانشگاه صنعتی اصفهان علیرضا سفیانیان هیات علمی گروه محیط زیست دانشکده منابع طبیعی دانشگاه صنعتی اصفهان نوراله میرغفاری هیات علمی گروه محیط زیست دانشکده منابع طبیعی دانشگاه صنعتی اصفهان

landscape characteristics and land use patterns of watershed demonstrate extension, distribution, density and abundance of human interference. these factors can affect water quality of adjacent aquatic systems within a watershed. land use changes have caused various environmental problems for zayandehroud river,turned it as a sink of pollutant. therefore this is investigated that how would land...

2012
Yogesh P. Khare Christopher J. Martinez Gurpal S. Toor

Spatial distribution of land use can have a substantial effect on surface and groundwater quality. Our objective was to test for trends in flow components and water quality related to changes in land use in the Alafia and Hillsborough River watersheds in Florida, USA, over the period 1974-2007. In addition, water quality statistics were evaluated in the perspective of numeric water quality crit...

2017
Wenjing Bo Xiaoke Wang Qianqian Zhang Yi Xiao Zhiyun Ouyang

To design and implement policy to manage water quality, it is important to investigate land use and possible sources of pollution. In this study, using Pearson regression analysis, redundancy analysis and multiple regression analysis, we assess the influence of land use and point sources on water quality in the river system in Shunde district in 2000 and 2010. The results show that water qualit...

2015
Ang Kean Hua

A spatial decision support system is a solution for spatial issues and problems applying a computer system and providing results for decision making. This comprehensive review study has been carried out to determine GIS and RS in SDSS towards water quality modeling in Malacca River. Rapid development in land use for human activities include agricultural and livestock activities, industrial acti...

Journal: :Sustainability 2023

Cultivated land quality is an essential agricultural resource and production element. To increase cultivated in a targeted way, it crucial to understand the features of regional elements that constrain its quality. In order diagnose restriction factors affecting improvement grades conduct quantitative analysis factors, index model was used this study analyze distribution characteristics East An...

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