نتایج جستجو برای: increase of soil organic matter

تعداد نتایج: 21250442  

2014
Teresia Svensson Lars Högbom Karin Johansson

There is increasing evidence that forests and forest soil contribute to the signature of chlorine composition in water bodies. However, little is known about the potential effects of land management activities on chlorine biogeochemistry. This study examines the effects of previous nitrogen addition on chlorine chemistry in a Pinus sylvestris (L.) forest located in south-central Sweden (60°00 ...

Journal: :Waste management 2006
J A Alburquerque J Gonzálvez D García J Cegarra

A pollutant solid material called "alperujo" (AL), which is the main by-product from the Spanish olive oil industry, was composted with a cotton waste as bulking agent, and the compost obtained (ALC) was compared with a cattle manure (CM) and a sewage sludge compost (SSC) for use as organic amendment on a calcareous soil. The experiment was conducted with a commercial pepper crop in a greenhous...

کلباسی, محمود , گندمکار, اکبر ,

The moisture content of urban solid wastes in Iran is very high. A large volume of leachate is, therefore, produced in the process of converting these wastes into compost. The leachate contains relatively large amounts of organic matter, plant nutrients, soluble salts as well as small amounts of some heavy metals. The effects of urban solid waste leachate on growth and yield of corn and heavy m...

ژورنال: علوم آب و خاک 1997
کلباسی, محمود , گندمکار, اکبر ,

The moisture content of urban solid wastes in Iran is very high. A large volume of leachate is, therefore, produced in the process of converting these wastes into compost. The leachate contains relatively large amounts of organic matter, plant nutrients, soluble salts as well as small amounts of some heavy metals. The effects of urban solid waste leachate on growth and yield of corn and heavy m...

Journal: :پژوهش های حفاظت آب و خاک 0

in order to study the effects of climate and geomorphology on the development of soils and their physico-chemical peroperties, two transects on the loess parent material were selected in two regions of golestanprovince. the regions were: huttan (maraveh tappeh area) and gorgan with aridic-thermic and xeric-thermic soil moisture and temperature regimes, respectively. four pedons in hutan and fiv...

2014
W. Yu X. Ding S. Xue S. Li X. Liao R. Wang

In this study, poultry manure compost and organic fertilizer were added to soils derived from basalt, granite, and river alluvial deposits for use as soil parent materials. Following incubation periods of 30 or 60 days at 25 °C, the physical and chemical properties and adsorption characteristics of the soils were studied. The results indicated that the application of poultry manure compost or o...

2014
Y. Liao W. L. Wu F. Q. Meng

Increase in soil organic carbon by agricultural intensification in northern China Y. Liao, W. L. Wu, F. Q. Meng, P. Smith, and R. Lal College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China Editorial Department of the Transactions of the Chinese Society of Agricultural Engineering, Chinese Academy of Agricultural Engineering, Beijing 100125, China I...

ژورنال: علوم آب و خاک 2008
لطفی, یزدان , نوربخش, فرشید , افیونی, مجید ,

  Organic fertilization has been practiced in Iran due to the shortage of soil organic matter. In recent years, attention has been payed to the organic fertilizers because their commercial production has recently started and demands for their application have increased. The objectives of this study were to investigate the effects of organic fertilizer type, rates and times of application on the...

2014
M. Loganathan

The definition of soil quality encompasses physical, chemical and biological characteristics, and it is related to fertility and soil health. Many indicators can be used to describe soil quality, but it is important to take into account sensitivity, required time, and related properties, than can be explained. Properties related to organic matter content, such as C/N ratio, organic carbon fract...

Journal: :آب و خاک 0
خدیجه سالاری نیک محسن نائل قاسم اسدیان علی اکبر صفری سنجانی

introduction: soil organic matter is influenced strongly by vegetation cover and management, therefore it is proposed as the main indicator of soil quality and health. the changes in soil organic matter status occur much more rapidly in the labile pools than in organic c. thus, labile pools can be used as early indicators of changes in total organic matter that will become more obvious in the l...

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