scholarly journals Spatial patterns of plant diversity and communities in Alpine ecosystems of the Hengduan Mountains, northwest Yunnan, China

2008 ◽  
Vol 1 (2) ◽  
pp. 117-136 ◽  
Author(s):  
R. Sherman ◽  
R. Mullen ◽  
L. Haomin ◽  
F. Zhendong ◽  
W. Yi
Keyword(s):  
Spatial Patterns ◽  
Plant Diversity ◽  
Hengduan Mountains ◽  
Alpine Ecosystems ◽  
Northwest Yunnan

Spatial Correlations among Total, Endemic, and Threatened Plant Diversity in Northwest Yunnan, China

2014 ◽  
Vol 955-959 ◽  
pp. 814-820
Author(s):  
Jian Meng Feng
Keyword(s):  
Species Diversity ◽  
Spatial Patterns ◽  
Plant Diversity ◽  
Endemic Species ◽  
Seed Plants ◽  
Spatial Correlations ◽  
Altitudinal Range ◽  
Threatened Plant ◽  
Diversity Measures ◽  
Northwest Yunnan

Located in Southwest China, Northwest Yunnan has drawn much attention around the world because of its high plant richness. However, spatial associations among different diversity measures of seed plants in this region remain elusive. We compiled a database of spatial distribution of total, endemic, and threatened seed plants at county scale in Northwest Yunnan, and examined spatial associations among the three diversity measures and altitudinal range. We found similar spatial patterns of the three diversity measures, which were highest in the northern part of the region. Moreover, strong correlations among the three diversity measures were observed. Altitudinal range was positively correlated with total and endemic species diversity, while endemic species diversity explained more spatial variation of threatened species diversity. The spatial patterns of all three diversity measures were directly or indirectly correlated with altitudinal range, suggesting strong associations among controlling factors of the three diversity measures. Overall, our results showed strong spatial correlations among total, endemic, and threatened plant diversity in Northwest Yunnan, which should help land managers design cost-effective conservation plans in this region.

Alpine ecosystems of northwest Yunnan, China: an initial assessment for conservation

2007 ◽  
Vol 4 (3) ◽  
pp. 181-192 ◽  
Author(s):  
Ruth Sherman ◽  
Renee Mullen ◽  
Haomin Li ◽  
Zhendong Fang ◽  
Yi Wang
Keyword(s):  
Initial Assessment ◽  
Alpine Ecosystems ◽  
Northwest Yunnan

scholarly journals The importance of temporal climate variability for spatial patterns in plant diversity

Ecography ◽  
2013 ◽  
Vol 36 (12) ◽  
pp. 1341-1349 ◽  
Author(s):  
Andrew D. Letten ◽  
Michael B. Ashcroft ◽  
David A. Keith ◽  
John R. Gollan ◽  
Daniel Ramp
Keyword(s):  
Climate Variability ◽  
Spatial Patterns ◽  
Plant Diversity

scholarly journals Over 150 Years of Long-Term Fertilization Alters Spatial Scaling of Microbial Biodiversity

mBio ◽  
2015 ◽  
Vol 6 (2) ◽  
Author(s):  
Yuting Liang ◽  
Liyou Wu ◽  
Ian M. Clark ◽  
Kai Xue ◽  
Yunfeng Yang ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Spatial Patterns ◽  
Plant Diversity ◽  
Gene Array ◽  
Control Plot ◽  
Spatial Distance ◽  
Agricultural Practice ◽  
Microbial Biodiversity ◽  
Spatial Scaling

ABSTRACTSpatial scaling is a critical issue in ecology, but how anthropogenic activities like fertilization affect spatial scaling is poorly understood, especially for microbial communities. Here, we determined the effects of long-term fertilization on the spatial scaling of microbial functional diversity and its relationships to plant diversity in the 150-year-old Park Grass Experiment, the oldest continuous grassland experiment in the world. Nested samples were taken from plots with contrasting inorganic fertilization regimes, and community DNAs were analyzed using the GeoChip-based functional gene array. The slopes of microbial gene-area relationships (GARs) and plant species-area relationships (SARs) were estimated in a plot receiving nitrogen (N), phosphorus (P), and potassium (K) and a control plot without fertilization. Our results indicated that long-term inorganic fertilization significantly increased both microbial GARs and plant SARs. Microbial spatial turnover rates (i.e.,z values) were less than 0.1 and were significantly higher in the fertilized plot (0.0583) than in the control plot (0.0449) (P< 0.0001). Thez values also varied significantly with different functional genes involved in carbon (C), N, P, and sulfur (S) cycling and with various phylogenetic groups (archaea, bacteria, and fungi). Similarly, the plant SARs increased significantly (P< 0.0001), from 0.225 in the control plot to 0.419 in the fertilized plot. Soil fertilization, plant diversity, and spatial distance had roughly equal contributions in shaping the microbial functional community structure, while soil geochemical variables contributed less. These results indicated that long-term agricultural practice could alter the spatial scaling of microbial biodiversity.IMPORTANCEDetermining the spatial scaling of microbial biodiversity and its response to human activities is important but challenging in microbial ecology. Most studies to date are based on different sites that may not be truly comparable or on short-term perturbations, and hence, the results observed could represent transient responses. This study examined the spatial patterns of microbial communities in response to different fertilization regimes at the Rothamsted Research Experimental Station, which has become an invaluable resource for ecologists, environmentalists, and soil scientists. The current study is the first showing that long-term fertilization has dramatic impacts on the spatial scaling of microbial communities. By identifying the spatial patterns in response to long-term fertilization and their underlying mechanisms, this study makes fundamental contributions to predictive understanding of microbial biogeography.

Incarvillea uniflora (Bignoniaceae), a new species from Hengduan Mountains, southwest China

Phytotaxa ◽  
2021 ◽  
Vol 528 (1) ◽  
pp. 52-58
Author(s):  
CHANGYING XIA ◽  
XIAOZHONG LAN ◽  
YOUWEI ZUO ◽  
LE LIN ◽  
HONGPING DENG
Keyword(s):  
New Species ◽  
Plant Diversity ◽  
Habitat Heterogeneity ◽  
Southwest China ◽  
Field Investigation ◽  
Biodiversity Hotspots ◽  
Hengduan Mountains ◽  
The World ◽  
Data Deficient ◽  
A New Species

The Hengduan Mountains, as one important biodiversity hotspots in the world, is notable for its high habitat heterogeneity and extreme plant diversity which including many endemics species. Incarvillea uniflora, a new species is described from Hengduan Mountains. The new species is similar to I. himalayensis in having red corolla, stemless, solitary flower, capsule 4-angled and winged seeds, but differs by the characters of stable simple leaves, long triangular calyx lobes and solitary or clustered flowers. It is considered to be Data Deficient (DD) due to the lack of further field investigation.

Woody plant diversity spatial patterns and the effects of urbanization in Beijing, China

2020 ◽  
Vol 56 ◽  
pp. 126873
Author(s):  
Xiaoting Li ◽  
Baoquan Jia ◽  
Wen Zhang ◽  
Jie Ma ◽  
Xiuping Liu
Keyword(s):  
Spatial Patterns ◽  
Plant Diversity ◽  
Woody Plant ◽  
Beijing China
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