نتایج جستجو برای: conservation of soil

تعداد نتایج: 21196506  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی و علوم دریایی 1388

this research was conducted in two protect and destroy region in the middle zagros, in illam province. in order to identification of ecological species group and evaluate density of regeneration, effect of many factors such as protection, vegetation, physiographic factors, physical and chemical properties of soil in study locations were studied. to achieve these purpose number of 54 plots using...

2017
Kjell B. Esser

Conservation agriculture is often presented as being ‘climate smart’ due to anticipated increases in soil moisture. The extent of enhanced water availability in farmers’ fields is, however, poorly documented. This paper presents five data sets describing soil moisture in fields of small-scale conservation and conventional farmers in the Agro-ecological Zone IIa, Zambia. The data include (1) soi...

1996
Evan Mercer Subhrendu Pattanayak

Although advocates of agroforestry have promoted soil conservation as one of its primary benefits, empirical estimates of these benefits have been lacking due to temporal and spatial complexity of agroforestry systems and soil resource dynamics. This study aims to reduce this gap by designing and testing a three stage farm level productivity methodology for economic evaluation of soil conservat...

Mohamad Chizari Mosayeb Baghaie,

  The main purpose of this research is review of principles, concepts, problems and solutions of soil ethic. In this research by descriptive method and Delphi technique was used for identifying soil ethical concepts, soil ethical principles, problems and difficulties of soil ethics in Iran and al around the world and suggestions for improvement of soil ethics in Iran. The population of this re...

Journal: :تحقیقات اقتصاد و توسعه کشاورزی ایران 0
سید هدایت الله نوری استادیار گروه جغرافیا، دانشگاه اصفهان علیرضا جمشیدی کارشناس ارشد توسعه روستایی، دانشگاه صنعتی اصفهان معصومه جمشیدی دانشجوی دکتری جغرافیا و برنامه ریزی روستایی، دانشگاه اصفهان زهرا هدایتی مقدم دانشجوی دکتری جغرافیا و برنامه ریزی روستایی، دانشگاه اصفهان عفت فتحی دانشجوی دکتری جغرافیا و برنامه ریزی روستایی، دانشگاه اصفهان

the aim of present work is study of factors affecting the acceptance of soil conservation measures by the farmers in shirvan & chardavol township which is one of the main agricultural areas in the province of ilam. this is an analytical comparative research that is done by survey method. the statistical population consisted of all the farmers of shirvan & chardavol township which are 8099 peopl...

Journal: :Nature 1948

Journal: :پژوهش های زراعی ایران 0
عبدالهی عبدالهی غدیری غدیری بحرانی بحرانی

abstract conservation tillage practices integrated with appropriate residue management is an efficient approach in sustainable agriculture to prevent the removal or burning of crop residues. two years field experiments were conducted to evaluate the effect of wheat residue management on yield, yield component and morphophysiological characteristics of corn. experimental design was split plot us...

2007
J. Calatrava Leyva J. A. Franco Martínez M. C. González Roa

This paper presents some results from a survey carried out in 2004 among 223 olive tree farmers from mountainous areas in the Spanish Southern provinces of Granada and Jaén regarding the adoption of soil conservation and management practices. Olive tree groves in mountainous areas are subject to a high risk of soil erosion and incur a higher cost of soil conservation. This results in greater di...

حیدری, مهدی , فرامرزی, مرزبان ,

In most ecosystems, disturbance is an important agent of variation in community structure and composition. Determining the diversity and composition of soil seed bank is essential for designing conservation and restoration programs because it can markedly contribute to future plant communities. Despite the important role of soil seed banks in the composition of different plant communities, and...

ژورنال: دانش حفاظت و مرمت 2017

Recently risk assessment and management in cultural-historical collections is one of the important subjects in the field of preventive conservation research. Different methods and aspects of are used and studied in the field of risk assessment in archaeological sites and collections and significant results are achieved and published in last decades. One of the types of archaeological collection...

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