نتایج جستجو برای: soil dominant frequency

تعداد نتایج: 779920  

Journal: :ecopersia 2014
javad mirzaei najmeh noorbakhsh abdolali karamshahi

to identify arbuscular mycorrhiza fungi (amf) associated with crataegus pontica c. koch, 54 soil samples were collected from the rhizosphere of this plant in ilam province, western iran. isolation of mycorrhizal spores was conducted by wet sieving followed by centrifuge. amf were identified based on morphological characteristics of spores. in this study, 13 species of amf belonging to five gene...

2010
Gagan Mirchandani Shruti Sharma

Abstract. Measurement of activation rates in cardiac electrograms is commonly done though estimating the frequency of the sinusoid with the greatest power. This frequency, commonly referred to as Dominant Frequency, is generally estimated using the short-time Fourier Transform with a window of fixed size. In this work a new short-time Fourier transform method with a data-adaptive window is intr...

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...

Journal: :International journal of engineering. Transactions A: basics 2022

Considering soil layering is a crucial and effective issue in investigating the seismicity of structures. However, previous studies have not examined presence rock layer soft soil. So, present paper, effect on forces displacements created low-and mid-rise steel moment frame was investigated. Thus, several numerical calculations were performed 12 different sizes layers at three depths. Finite el...

2016
Hong-sheng Wu Song-hua Xiao

Pot experiments were conducted to assess the possibly adverse effect of transgenic Btand CpTI-cotton (Bacillus thuringiensis and cowpea trypsin inhibitor cotton) on soil ecosystem. Soil enzymes activities and microbial molecular community and diversity based on 16sand 18s-PCR-DGGE (polymerase chain reaction-denaturing gradient gel electrophoresis) profiles were determined by adding root exudate...

2018
Andrew Kulmatiski

Plant-soil feedbacks (PSFs) have gained attention for their potential role in explaining plant growth and invasion. While promising, most PSF research has measured plant monoculture growth on different soils in short-term, greenhouse experiments. Here, five soil types were conditioned by growing one native species, three non-native species, or a mixed plant community in different plots in a com...

Journal: :محیط شناسی 0
دکترمحمد جعفری مهندس سید ابوالفضل نصراللهی دکتر فریدون سرمدیان دکتر حسین آذرنیوند

relationship between plant and sial has special importance, because it is judged about one by considering the another one. soil-plant relationship is used for range trend, range emdttton, range suitability in range species. this research, includes: the analysis of plant different types and dominant species in each type with soil factors such as percentage of lime clay depth, stone and gravel (s...

2018
Yu-Jie Wei Yun Wu Yin-Zhuo Yan Wan Zou Jie Xue Wen-Rui Ma Wei Wang Ge Tian Li-Ye Wang

In this study Illumina MiSeq was performed to investigate microbial diversity in soil, leaves, grape, grape juice and wine. A total of 1,043,102 fungal Internal Transcribed Spacer (ITS) reads and 2,422,188 high quality bacterial 16S rDNA sequences were used for taxonomic classification, revealed five fungal and eight bacterial phyla. At the genus level, the dominant fungi were Ascomycota, Sorda...

2018
Shaokun Wang Xiaoan Zuo Xueyong Zhao Tala Awada Yongqing Luo Yuqiang Li Hao Qu

Plant species affect soil bacterial diversity and compositions. However, little is known about the role of dominant plant species in shaping the soil bacterial community during the restoration of sandy grasslands in Horqin Sandy Land, northern China. We established a mesocosm pots experiment to investigate short-term responses of soil bacterial diversity and composition, and the related soil pr...

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