نتایج جستجو برای: chemical sterilizing of soil

تعداد نتایج: 21206692  

Journal: :مرتع و آبخیزداری 0
بهرام قلی نزاد استادیار گروه مرتع و آبخیزداری دانشکده منابع طبیعی، دانشگاه کردستان محمد جعفری استاد دانشکده منابع طبیعی دانشگاه تهران محمد علی زارع چاهوکی دانشیار دانشکده منابع طبیعی دانشگاه تهران حسین آذرنیوند استاد دانشکده منابع طبیعی دانشگاه تهران حسن پوربابایی دانشیار دانشکده منابع طبیعی دانشگاه گیلان

this research has been done with the aim of explaining environmental and managerial factors that affects on rangeland vegetation distribution in saral rangelands of kurdistan province. after selecting plant types as working area were done sampling from plant types and determined some of plants parameters such as kind and number of plants and cover percentage. various environmental factors such ...

Journal: :international journal of advanced biological and biomedical research 2013
atta safari ataollah kavian aidin parsakhoo

forests are an important economic source for human and have key role in nutrient cycle, hydrology and ecosystem performance, any interference in this vital ecosystem causes to damage to forests. mechanical logging and road construction in forest areas have led to much soil compaction. soil physical and chemical properties were studied in parts of road and non-road in the darabkola forest of ira...

ژورنال: علوم آب و خاک 2015
ترابی گل سفیدی, حسین, مرادی نسب, وحید,

Terraces are old geomorphic surfaces that are not related to present streams and are best places to study the effect of time on soil formation (chronosequence). This research was carried out to study some physico-chemical parameters especially different forms of iron as soil development indices on terraces of Karaj River in Hassan-Abad, southern Tehran. To determine soil development indices in ...

Farokhzadeh, Behnoush, Attaeian, Behnaz , Khorsand, Mohsen , Mortazavi, Samar ,

Background and objectives: The use of copper based fungicides is a crucial part of agricultural operations in vineyards, increasing productivity and crops. However, the long term application of fungicide could increase the copper concentration in the vineyard soils. Methods: In this study, soil and water chemical parameters including copper contamination, pH and EC as well as soil organic ...

Journal: :آب و خاک 0
پیام نجفی سید حسن طباطبائی هاجر طاهری سودجانی

introduction: reuse of wastewater for agricultural irrigation is increasing due to an increased demand for water resources in different parts of the world. almost 70% of deviated water from rivers and pumped groundwater is used for agriculture. if wastewater is used for irrigation in agriculture, then the amount of discharged water from natural sources will be decreased and the flow of wastewat...

Journal: :desert 2014
samira hossein jafari mohammad reza tatian reza tamartash ali akbar karimian

owing to the importance and necessity of identifying soil properties in arid rangeland management, and the variableeffects of different kinds of herbivores on soil, this study compares some of the physical and chemical properties ofsoil between two regions experiencing livestock and wildlife grazing in the desert rangelands of kalmand-bahadoranin yazd province. the key areas in two regions expe...

Fatemeh Mahdavi Hamzeh Ahmadi Reza Bagheri, Saed Shahrokhi Sarduo

Awareness of the effects of fire on various aspects of an ecosystem after the fire,is important for range management. Changes in soil physical and chemical propertiescaused by fire can be the cause of changes in the vegetation. In this study, effects of fire onphysical and chemical characteristics of soil were investigated. This research was carriedout in a randomized block design method in the...

        In this study we evaluate the effects of different types on soil Physical and chemical Properties and plant species biodiversity in the hyrcanian forests of Iran. For this porpuse 33 sample plots were established in 5 vegetation types consist of pure beech (Fagus orientalis), Ash plantation (fraxinus excelsior), spruce plantation (Picea abies), mixed forest and degraded forest. In each ...

Mycorrhizal association in seven plants grown in Arasbaran forest located in the north west of Iran was investigated. The soil samples were collected from the plants rhizosphere. Physico-chemical properties of rhizosphere soils like soil texture, pH, EC and some extractable nutrients such as N, P and K were recorded. The number of spores in rhizosphere and percentage of root mycorrhizal coloniz...

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When aerial parts of the plants capable of storing absorbing mineral salts in their leaves fall, these dissolved materials are transferred to the soil surface, changing its physical and chemical properties. In this study, we have investigated the influence of the Haloxylon tree on the physical and chemical properties, and also humidity of the soil using two, 300 m long transects one canopy of t...

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