نتایج جستجو برای: genetic soil types

تعداد نتایج: 1237607  

2015
Wei Liu Peijun Du Dongchen Wang

One important method to obtain the continuous surfaces of soil properties from point samples is spatial interpolation. In this paper, we propose a method that combines ensemble learning with ancillary environmental information for improved interpolation of soil properties (hereafter, EL-SP). First, we calculated the trend value for soil potassium contents at the Qinghai Lake region in China bas...

Journal: :Environmental pollution 2014
Jilei Wu Chaosheng Zhang Lijun Pei Gong Chen Xiaoying Zheng

The risk of birth defects is generally accredited with genetic factors, environmental causes, but the contribution of environmental factors to birth defects is still inconclusive. With the hypothesis of associations of geochemical features distribution and birth defects risk, we collected birth records and measured the chemical components in soil samples from a high prevalence area of birth def...

2014
Liliana Quiza Isabelle Lalonde Claude Guertin Philippe Constant

Soil carboxydovore bacteria are the biological sink of atmospheric carbon monoxide (CO). The initial oxidation of CO is catalyzed by a CO-dehydrogenase (CODH), and the gene coxL encodes the large subunit of the enzyme. Only a few carboxydovore isolates were shown to oxidize atmospheric CO and little is known about the potential impact of global change on the ecophysiology of this functional gro...

تهرانی‌فر, علی, خرازی, سیده مهدیه, لکزیان, امیر, نعمتی, سید حسین, پاکدل, پیام,

In this study, the effects of four types of mulch including wood chips, municipal compost, sawdust and gravel in three different thicknesses on temperature soil, moisture and growth characteristics of two cultivars of Tagetes (Tagetes patella var Durango Bee and Tagetes erecta var Antigua) were examined in Mashhad area with semi-arid climate. The research was conducted as a split plot based on ...

Journal: :journal of agricultural science and technology 2011
a. samadi

solution potassium (so-k) and exchangeable k (ex-k) extracted by nh4oac are the major sources of potassium used by plants, but initially non-exchangeable k (nex-k) can also contribute significantly to plant uptake. perennial ryegrass (lolium perenne, cv. roper) was successively planted in ten surface soil samples with different clay mineralogical composition belonging to five soil types to dete...

Journal: :Arab Universities Journal of Agricultural Sciences 2005

Journal: رستنیها 2018

The Mirabad protected area (S. Azarbaijan, Iran) has a variety of ecological nurseries due to elevation of the sea, physiographic factors, micro-climates and soil types, and has high vegetation diversity. Mirabad protected area in the Piranshahr-Sardasht axis is between the latitudes of 36° 23' and 36° 31' north, and the lengths 45° 15' and 45° 25', with an area of ​​11435 ha, in the elevation ...

2013
Thomas Jagdhuber Irena Hajnsek Konstantinos P. Papathanassiou

Soil moisture was assessed with quad-polarimetric TerraSAR-X and dual-polarimetric (HH/VV) TanDEM-X data from the agricultural region of Wallerfing, Germany. The investigations included a bare soil case in April 2009 (TerraSAR-X) and a time series of 04-07/2011 (TanDEM-X) to estimate soil moisture on bare and vegetated soils including different agricultural crop types at various phenological st...

ژورنال: مرتع 2021
Ghorbani, Jamshid, Khalili Narani, Keyvan, Zali, Seyed Hassan,

Pteridium aquilinum is known as an invasive species  in different ecosystems of the world. The spread of this species is increasing in the north of Iran particularly outside of forest ecosystems. In this study, the amount and composition of soil seed banks in the dense pathes of  Pteridium were investigated in summer rangelands of  Bandpay in the south of Babol city in Mazandaran province, Iran...

2002
E Meers

Abstract Understanding metal plant availability as influenced by soil conditions is of key importance for phytoremediation research and for quantification of environmental risk assessment in polluted areas. Urtica dioica L. was chosen as study object as it is omnipresent in the temperate climate region and in the area under study in particular. The study area stretched over 630 km2 in Flanders,...

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