نتایج جستجو برای: soil loss

تعداد نتایج: 619566  

A.R. Sepaskhah H. Parvizi

ABSTRACT- In recent years, intensive drought has caused a severe yield reduction in rain-fed trees. Increasing runoff of low amount rainfall can be used to provide partial water requirement of rain-fed trees. To achieve this objective, some strategies including gravel removal (G), rill construction across to slope (R) and applying of baking soda (S) and their effects on runoff, rainfall infiltr...

2015
Yan ZHANG Mingming FENG Jianying YANG Tingning ZHAO Hailong WU Changqing SHI Yi SHEN

Zhang Y., Feng M.M., Yang J.Y., Zhao T.N., Wu H.L., Shi C.Q., Shen Y. (2015): Effects of soil cover and protective measures on reducing runoff and soil loss under artificial rainfall. Soil & Water Res., 10: 198–205. The hazards from wind, sand, and soil erosion caused by human activities, such as residue slopes in abandoned urban mines, have resulted in a vicious circle of environmental degrada...

2015
W. H. Gera Hol Wietse de Boer Mattias de Hollander Eiko E. Kuramae Annelein Meisner Wim H. van der Putten

Land use intensification is associated with loss of biodiversity and altered ecosystem functioning. Until now most studies on the relationship between biodiversity and ecosystem functioning focused on random loss of species, while loss of rare species that usually are the first to disappear received less attention. Here we test if the effect of rare microbial species loss on plant productivity ...

Journal: :مرتع و آبخیزداری 0
سید علیرضا موسوی عضو هیئت علمی، دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان حسین ارزانی عضو هیئت علمی، دانشکده منابع طبیعی، دانشگاه تهران غلامعلی شرزه ای عضو هیئت علمی، دانشکده اقتصاد، دانشگاه تهران حسین آذرنیوند عضو هیئت علمی، دانشکدة منابع طبیعی، دانشگاه تهران مهدی فرح پور عضو هیئت علمی، مؤسسه تحقیقات جنگل ها و مراتع ایران استفانی انگل رئیس گروه تصمیم ‏سازی و اقتصاد محیط زیست مؤسسه eth سوئیس اسماعیل علیزاده

soil conservation is one of the most important regulative functions of natural ecosystems. this function is of high importance in taleghan watershed due to high erosion quantity and sediment accumulation in taleghan dam reservoir. soil loss reduction, sedimentation control and fertility conservation were considered as different aspects of soil conservation. effect of land use and vegetation cov...

2003
J. P. Field K. W. Farrish E. A. Carter

Soil loss and nutrient concentrations in runoff were evaluated to determine the effects of site preparation burning on a recently harvested loblolly pine (Pinus taeda L.) site in east Texas. Soil and nutrient losses prior to treatment were approximately the same from control plots and pretreatment burn plots. Nutrient analysis of runoff samples indicated that the prescribed burn caused increase...

2015
F. Todisco L. Brocca W. Wagner

The potential of coupling soil moisture and a Universal Soil Loss Equation-based (USLE-based) model for event soil loss estimation at plot scale is carefully investigated at the Masse area, in central Italy. The derived model, named Soil Moisture for Erosion (SM4E), is applied by considering the unavailability of in situ soil moisture measurements, by using the data predicted by a soil water ba...

2016
Eugenia Pérez Pilar García Yanbo Huang

This study analyzes soil sealing and its repercussions in the loss of fertile soils, which are more appropriate for agriculture use. Also, soil sealing increases flood risk. The main objective is to estimate soil loss by sealing in the Guadarrama River Basin (Madrid, Spain) between 1961 and 2011. The combination of digital processing (Normalized Difference Vegetation Index (NDVI), principal com...

A. Jafari Ardakani F. Azimi M. Parehkar R. Bayat R. Talaei

One of the main resonator factors in watershed soil erosion is inappropriateland management including conversion of pasture land to dry-land farming.Unfortunately, the changes of Gara Su watershed usages have been very common.Thus, in order to understand the influence of land use on runoff rate and soil loss, soillosses were investigated and determined under both pasture and dry-land agricultur...

Journal: :journal of rangeland science 2011
r. talaei a. jafari ardakani f. azimi r. bayat m. parehkar

one of the main resonator factors in watershed soil erosion is inappropriateland management including conversion of pasture land to dry-land farming.unfortunately, the changes of gara su watershed usages have been very common.thus, in order to understand the influence of land use on runoff rate and soil loss, soillosses were investigated and determined under both pasture and dry-land agricultur...

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