نتایج جستجو برای: 100 cm depths physical

تعداد نتایج: 1181848  

Journal: :Journal of environmental sciences 2007
Qiu-yan Li Wen-zhi Zhao Hai-yan Fang

This study addresses the adaptation of Nitraria sphaerocarpa to blown sand at the edge of a desert oasis with regard to the aspects of soil seed banks, seedlings, and population. Horizontally, the total number of seeds per unit area decreased from the shrub canopy center to intershrub areas, and most seeds were found under shrub canopies. Vertically, the highest proportion of seeds was found at...

Journal: :Atmosphere 2022

To analyse the capacity of a soil to sequester organic carbon and impact that deforestation reforestation can have on its physical chemical properties, specific laboratory analyses are necessary. According standard methodology, number 16 samples were taken from two different depths (0–10 cm, 10–20 cm) areas (degraded area forest area) identify if type land use sampling depth key factors in chan...

Journal: :Journal of orthopaedic research : official publication of the Orthopaedic Research Society 1987
A R Hargens A G McClure M J Skyhar R L Lieber D H Gershuni W H Akeson

Distributions of tissue fluid pressure were examined beneath a standard pneumatic tourniquet in six upper extremities and six lower extremities of fresh human cadavera, disarticulated at the shoulder and hip, respectively. A standard 8-cm-wide tourniquet cuff was applied at mid-humerus or mid-femur position. Tissue fluid pressures were measured by 100-cm-long slit catheters inserted parallel to...

Journal: :تحقیقات آب و خاک ایران 0
حمید محمودزاده کارشناس ارشد دانشکده کشاورزی دانشگاه بوعلی سینای همدان محسن شکل آبادی استادیار دانشکده کشاورزی دانشگاه بوعلی سینای همدان علی اکبر محبوبی استاد گروه مهندسی خاک شناسی دانشکده کشاورزی دانشگاه بوعلی سینای همدان

the aim of this study was to assess the conversion of forest to vineyard on different physical pools of organic matter in zrebar lake watershed. soil samples were collected from the two major land use types including forest and vineyard land at 0-30; 30-60, and 60-90-cm depths. in each land use, different soc fractions were measured. according to the results of size fractionation of organic car...

ژورنال: آبخیزداری ایران 2019
Alipour, Hasan, Kazemzadeh, Majid,

In this study, to analyze the pattern of soil temperature changes in the depths of  5, 10, 20, 30, 50 and 100 cm under the influence of temperature (minimum, average and maximum) and humidity (minimum, average and maximum) the Pearson and regression methods were used for Taleghaan synoptic station during the period of 2008 to 2016 . The results showed that soil temperature had the highest corre...

Journal: :international journal of aquatic biology 0
caner enver özyurt çukurova university, faculty of fisheries, 01330 adana, turkey. erdoğan çiçek nevşehir haci bektas veli university, faculty of art and sciences, department of biology, 50300 nevşehir, turkey. dursun avşar çukurova university, faculty of fisheries, 01330 adana, turkey. hacer yeldan çukurova university, faculty of fisheries, 01330 adana, turkey. meltem manaşırlı çukurova university, faculty of fisheries, 01330 adana, turkey.

this study examined the spawning characteristics and distribution of mullus barbatus and upeneus moluccensis in babadillimani bight, in the northeastern mediterranean (near mersin, turkey) between of may 1999 and april 2000. sampling was carried out monthly at depths of 0-50 m, 50-100 m and >100 m using commercial trawl net mesh size 22 mm knot to knot. the results showed no difference between ...

2008
M. Simón M. Díez F. Martín

The concentrations of As and Zn in 100 georeferenced soils uniformly distributed throughout the area affected by the spill from the Aznalcóllar mine (April 1998) were analysed at three depths (0– 10, 10–30, and 30–50 cm) and on four dates (autumn–winter 1998, 1999, 2001, and 2004). For an estimate of the geochemical background, 30 unaffected soils near the edge of the spill were also analysed a...

Journal: :Journal of environmental monitoring : JEM 2009
G Du Laing S K Chapagain M Dewispelaere E Meers F Kazama F M G Tack J Rinklebe M G Verloo

We aimed to assess the presence and availability of arsenic (As) in intertidal marshes of the Scheldt estuary. Arsenic content was determined in soils sampled at 4 sampling depths in 11 marshes, together with other physicochemical characteristics. Subsequently, a greenhouse experiment was set up in which pore water arsenic (As) concentrations were measured 4 times in a 298-day period in 4 marsh...

2005
MEGUMI O. CHIKAMOTO YASUHIRO YAMANAKA

A one-dimensional sediment model was developed by introducing the CIP-CSL2 scheme in the advection term. This enables us to represent fluctuations of the vertical profiles of 100 cm depth, which needs integrations on a longer timescale than 10 kyr, because this scheme avoids smoothing of the vertical profiles due to no numerical diffusion, instead of a commonly used forward scheme. Using the mo...

2006
Mark Gabriel Little Cin-Ty Aeolus Lee

This paper presents an investigation into the degree and nature of chemicalweathering during soil formation on a volcanic (phonolite) substrate on the southern slopes of Mt. Kilimanjaro in northern Tanzania. The high field strength elements Nb and Ta were used to estimate enrichments and depletions relative to the bedrock. The degree ofweatheringwas found to increasewith depth in the soil profi...

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