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Spatial pattern of a plant community in a wetland ecosystem in a semi-arid region in northwestern China
Springer Science and Business Media LLC - - 2008
The spatial distribution characteristics of plant communities in a wetland-dry
grassland ecosystem in arid and semi-arid regions in northwestern China and the
main factors affecting the distribution pattern were studied. The Siertan
wetland in the Haba Lake Nature Reserve was the study area. Four transect lines,
each about 1 km long, were set up in the growing season along the biotope
gradient in ...
Gap phase regeneration recruitment of mixed conifer-broadleaf forests in Wolong Nature Reserve
Springer Science and Business Media LLC - - 2009
Mutual influences in growth and reproduction between pine wood nematode Bursaphelenchus xylophilus and bacteria it carries
Springer Science and Business Media LLC - Tập 1 - Trang 324-327 - 2006
The interactions between pine wood nematode and three bacterium strains isolated
from the nematode, Bursaphelenchus xylophilus, which are two strong pathogenic
bacterium strains, Pseudomonas fluorescens GcM5-1A and Pseudomonas putida
ZpB1-2A and a weak-pathogenic bacterium strain, Pantoea sp. ZM2C, were studied.
The result showed that the strong-pathogenic GcM5-1A strain and ZpB1-2A strain
signifi...
Relationships between xylem embolism and eco-physiological indices in eight woody plants in situ (II): The relationship with photosynthetic eco-physiological indices
Springer Science and Business Media LLC - Tập 2 - Trang 198-203 - 2007
The relationship between xylem embolism and eco-physiology indices (i.e.
photosynthetic available radiation, temperature, relative humidity,
photosynthetic rate, transpiration rate, stomatal conductance and water use
efficiency) in eight tree species was investigated in situ. The species studied,
Robinia pseudoacacia L., Acer truncatum Bge., Hippophae rhamnoides L., Ulmus
pumila L., Pinus tabulaef...
Root Ecological Niche Index and Root Distribution Characteristics of Artificial Phytocommunities in Rehabilitated Fields
Springer Science and Business Media LLC - Tập 1 - Trang 12-20 - 2006
In the implementation phase of the Conversion of Cropland to Forest and
Grassland (CCFG) project in China, it is important, from a scientific point of
view, to recognize phytocommunities’ characteristics, species compatibility, and
ecological function. The ecological niche that roots occupy, their abundance and
distribution, and the factors that affect them must be acknowledged. Following
the meth...
Altitudinal patterns of the flora of seed plants of Dawei Mountain in Yunnan Province, south China
Springer Science and Business Media LLC - Tập 2 - Trang 40-46 - 2007
Altitudinal gradient incorporates multiple resource gradients, which vary
continuously in different fashions. It is important to study the mountain
floristic patterns along altitudinal gradients, which reveal the regular pattern
of the flora along the environmental gradients, the changing trend of
biodiversity patterns along the altitudinal gradient, and relevance of
biological fitness. To explore...
A review of the sampling theory of comprehensive forest resources monitoring
Springer Science and Business Media LLC - Tập 4 - Trang 123-131 - 2009
Sampling is a key technique in comprehensive forest resources monitoring. The
history of the sampling survey was briefly reviewed and sampling theories were
classified and compared in detail. On the basis of that, the application of
different sampling methods in comprehensive forest resources monitoring was
illustrated in accordance with the sampling classification of Michael Köhl et
al. Improveme...
A new calculation method to estimate forest gap size
Springer Science and Business Media LLC - Tập 4 - Trang 276-282 - 2009
The distance and direction coordinates from the center of each canopy gap to its
edge in sixteen compass directions were measured in the secondary forests. Total
of 21 gaps of different sizes were measured. The gap size was determined using
different calculation methods: octagon method (OM), which was applied with two
compass directions (OM_1 and OM_2); sixteen-gon method (SM); and
elliptical-sect...
Environmental bioindication of sulfur in tree rings of Masson pine (Pinus massoniana L.) in the Pearl River Delta of China
Springer Science and Business Media LLC - Tập 4 - Trang 1-6 - 2008
In order to identify the potential of sulfur (S) content in the rings of Masson
pine (Pinus massoniana) in the Pearl River Delta as a bio-indicator of regional
history of atmospheric pollution, dendrochemistry was used to determine the
temporal distribution of S content in the xylem of Masson pines from Zhaoqing
Dinghushan and Nanhai Xiqiaoshan, Guangdong Province, southern China. The
results indi...
Aspirated pits in wetwood and micromorphology of microbial degradation in subalpine fir
Springer Science and Business Media LLC - Tập 1 - Trang 449-452 - 2006
Differentiating from normal wood, pit membranes in wetwood of subalpine fir
contain bacteria of water drop shape or orbicular shape, and flaky shape, as
observed using Scanning Electronic Microscope. Not only are ray parenchyma cells
in wetwood partially degraded but also margo strands in pit membranes are
somewhat degraded by bacterial activities. Most of the bordered-pit membranes in
normal wood...
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