نتایج جستجو برای: 85 topsoil samples 0
تعداد نتایج: 1035557 فیلتر نتایج به سال:
The study was carried out to investigate the effect of tree age soil physical and chemical characteristics mango orchard. Effect 4 different ages (<10, 10 - 20, 21 – 30, over 30 years) on physic-chemical properties farmers’ Mango field in Dong Thap province. research handled from June November 2021. Soil samples at two depths (0 20 50 cm) were collected basin subjected laboratory analysis De...
Karlsson. A. 1996. Site vrevaration of abandoned fields and earlv establishment of naturallv and direct-seeded birch in Sweden. Studia Forestalia Suecica 199, 25 pp. ISSN 0039-3150, ~ S B N 91-576-5152-3. Field experiments were carried out at four sites in Sweden to investigate the possibility of establishing downy birch (Betula pubescens Ehrh.) and silver birch (Betula pendula Roth) on abandon...
[1] Measurements have been made of the effect of compaction on water retention, saturated hydraulic conductivity, and porosity of two English soils: North Wyke (NW) grassland clay topsoil and Broadbalk silty topsoil, fertilized inorganically (PKMg) or with farmyard manure (FYM). As expected, the FYM topsoil had greater porosity and greater water retention than PKMg topsoil, and the NW clay tops...
Our study focused on radiocaesium (137Cs) partitioning in forests, three vegetation periods after the Fukushima Daiichi nuclear power plant accident. 137Cs distribution in forest components (organic and mineral soil layers as well as tree compartments: stem, bark, needles, branches and roots) was measured for two Japanese cedar stand ages (17 and 33 years old). The results showed that around 85...
Background and Objectives: The aim of the present study was to assess the probable heavy metals contamination in topsoil surrounding Venarj mine in Qom province using contamination indices and artificial neural networks method. Material and methods: in order to evaluate the contamination status around Venarj mine in Qom province, 70 soil samples were collected in an area of 22 Km2, and the to...
BACKGROUND Although recent advances in circulating DNA analysis allow the prediction of tumor genomes by noninvasive means, some challenges remain, which limit the widespread introduction of cfDNA in cancer diagnostics. We analyzed the status of the two best characterized colorectal cancer (CRC) genetic and epigenetic alterations in a cohort of CRC patients, and then compared the degree to whic...
This study investigated the effects of surface-application lime and gypsum on soil properties yields ratoon sugarcane crops. Treatments involved once-off surface application dolomitic (L), (G) plus (LG) in factorial combination, with four replications. Soil chemical were measured samples collected at intervals 20 between depths 0 80 cm first fifth years after treatment application. Yield parame...
Abstract Bandung is one of the metropolitan cities in Indonesia which has a dense population. As result, number vehicles increasing, causes an abundance particulates on urban topsoil. Motor vehicle can be identified through value magnetic susceptibility. The greater susceptibility topsoil, more minerals are associated with produced by vehicles. To zone area, clustering method needed. In this st...
Understanding the contents and stoichiometry of carbon (C), nitrogen (N), phosphorus (P) is vital to evaluate function processes a forest ecosystem. Overall, 18 sites in Shennongjia Forest from an altitude 800 3000 m were selected collect litterfall, humus, soil (0–20 20–40 cm) samples May, August, December. The spatio-temporal distribution C, N, P their quantified, underlying driving factors a...
The Yellow River Delta (YRD) is a typical agricultural and petrochemical industrial area of China. To assess the current status of phthalate esters (PAEs) of soil residues, soil samples (0∼20 cm) (n = 82) were collected in Bincheng District, at the geographic center of the YRD. PAEs were detected in all topsoil samples analyzed, which indicated that PAEs are ubiquitous environmental contaminant...
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