نتایج جستجو برای: in soil category soil erosion and soil ph

تعداد نتایج: 21795260  

2017
Linlin Xiao Xiaohuan Yang Hongyan Cai

As elicitors of terrestrial system change (e.g., land use transformation) through the introduction of anthropogenic causes, the spatial patterns and levels of roads might be more detrimental to the long-term health of ecosystems at a large scale than the road paving itself. This paper reveals the relationship between soil erosion and roads from a large-scale perspective in Jiangxi Province, Chi...

ژورنال: علوم آب و خاک 2017

Erosion is one of the main factors of destruction of hydraulic structures. Therefore, soil improvement is necessary to improve soil quality and reduce soil erosion. Due to the adverse effects of substances such as lime and ash and also the increasing usage of nanotechnology in various branches of engineering sciences, using nanoparticles as new additives is an efficient way. In this study, to i...

1998
B. Mitra H. D. Scott

There is a need in many emerging nations to develop simple methods for predicting areas of extensive soil erosion using imprecise, but real-world, input data at low cost with considerable Ž . accuracy. The objectives of this study are to 1 develop fuzzy logic models that predict soil Ž . erosion in a relatively large watershed using a limited number of input variables, 2 determine the Ž . effec...

2018
Jesús Rodrigo-Comino Saskia Keesstra Artemi Cerdà

Soil erosion in vineyards has to be considered as an environmental concern as it depletes soil fertility and produces damages in the fields and downstream. High soil and water losses decrease soil quality, and subsequently, can reduce the quality of the grapes and wine. However, in specialized journals of viticulture and enology, soil erosion studies are not present. This paper surveys the soil...

ژورنال: علوم آب و خاک 2017
فرومدی, مجید, واعظی, علی رضا,

Rill erosion is the first step in soil erosion process in the hillslopes, particularly in arid and semiarid regions. This study was conducted to investigate the role of rainfall intensity and raindrop impact on the physical properties of soils and particle detachment capacity (Dc) in a marl soil. Marl soil samples were filled into the flumes with 4 m long and 0.9 m wide and exposed to simulated...

Journal: :The Science of the total environment 2014
Panos Panagos Katrin Meusburger Cristiano Ballabio Pasqualle Borrelli Christine Alewell

The greatest obstacle to soil erosion modelling at larger spatial scales is the lack of data on soil characteristics. One key parameter for modelling soil erosion is the soil erodibility, expressed as the K-factor in the widely used soil erosion model, the Universal Soil Loss Equation (USLE) and its revised version (RUSLE). The K-factor, which expresses the susceptibility of a soil to erode, is...

Journal: :انسان و محیط زیست 0
مهران مجرد آشناآباد هیات علمی گرایش اکولوژی، دانشگاه پیام نور علیرضا روحانی هیات علمی دانشگاه پیام نور.

in future, soil erosion will be a great challenge for biosphere. if the soils today are notprotected carefully hunger crises all over the world will be widespread. the present article endeavorsto survey soil erosion process and approaches to prevent it. furthermore the article tries to review therelation between soil character and soil production capability shedding light on the effect of erosi...

2004
V. O. Polyakov M. A. Nearing

The development of soil conservation plans and evaluation of spatially distributed erosion models require knowledge of rates of soil loss and sedimentation on different landscape elements and slope positions. Characterization of soil erosion rates and patterns within watersheds is important for the understanding of erosion processes and landscape evolution. Experimental data that show spatial t...

Journal: :تحقیقات اقتصاد و توسعه کشاورزی ایران 0
داود مومنی چلکی دانش آموخته کارشناسی ارشد مدیریت کشاورزی، دانشکده کشاورزی دانشگاه تبریز باب اله حیاتی دانشیار گروه اقتصاد کشاورزی دانشکده کشاورزی دانشگاه تبریز قادر دشتی دانشیار گروه اقتصاد کشاورزی دانشکده کشاورزی دانشگاه تبریز ایوب رضایی مربی گروه اقتصاد کشاورزی دانشکده کشاورزی دانشگاه تبریز

land degradation due to soil erosion has been well pointed out as one of the most serious ecological and economic problems that some such south asian countries including iran are faced with. although high investment has been made, particularly in introduction of soil conservational mechanical practices, the level of acceptance of these practices has been low and while a high rate of erosion con...

Journal: :International journal of environmental research and public health 2016
Yujin Li Juying Jiao Zhijie Wang Binting Cao Yanhong Wei Shu Hu

BACKGROUND The Loess Plateau, an ecologically vulnerable region, has long been suffering from serious soil erosion. Revegetation has been implemented to control soil erosion and improve ecosystems in the Loess Plateau region through a series of ecological recovery programs. However, the increasing atmospheric CO₂ as a result of human intervention is affecting the climate by global warming, resu...

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