The cell abundance of phytoplankton in survey area is 5.28×104 cell/m3～31.20×104 cell/m3, the mean value is 12.94×104 cell/m3.Because of the tidewater,the high abundance of phytoplankton is occurred in No.
Results The DG's EVLWI was significantly lower than the CG's[(0.508±0.089)vs.(0.648±0.102),P＜0.05)],but the DG's NKA activity,α-ENaC mRNA and NKA-αl protein abundances were significantly higher than the CG's,correspondingly(P＜0.05).
The paper discusses the connotation of water resources bearing capacity and its influence factors, puts forward the conception of water abundance degree and its calculation method, sets up the judgement target of regional water resources bearion capacity based on water abundance degree.
The faults and fault systems are developed and complex in the northern slope region of east nose-like structure belt of Biyang sag. The develop and successive degree of fault controls the migration, accumulation and abundance degree of oil-gas reservoir.
This paper makes a systematic analysis and comparison of type structure, intensity effect,aggcomeration effect, intercity differences, absolute abundance degree, relative degree, gereral degree, spatial structure and theme function.
The ecological niche that roots occupy, their abundance and distribution, and the factors that affect them must be acknowledged.
In terms of Shannon-Wiener index, evenness index, and abundance index, the biodiversity in gap community were higher than those under forest canopy in regeneration layer.
For example, Shannon-Wiener index and abundance index is higher and Simpson's dominance index is the lowest in succession layer of medium-size gap (100-250 m2) in the broad-leaved Korean pine forest of Changbai Mountains.
tabulaeformis communities with three tending practices, the highest species abundance index appears with tending and shelterwood cutting and the highest evenness index and species diversity appears with closed tending.
The Shannon-Wiener index, evenness index, and abundance index in gap were higher than those under canopy in the seedling layer, while the community dominance in the seedling layer increased in closed canopy.