scholarly journals A Study of the Vegetation and Floristic Affinity of the Limestone Forests in Southern and Southwestern China

1995 ◽  
Vol 82 (4) ◽  
pp. 570 ◽  
Author(s):  
Xu Zhaoran
Keyword(s):  
Southwestern China ◽  
Floristic Affinity

scholarly journals Biogeography of the savanna-like vegetation in hot dry valleys in southwestern China with reference to their floristic origin and evolution

2018 ◽  
Author(s):  
Hua Zhu ◽  
Lichun Yan
Keyword(s):  
Southern Africa ◽  
Great Distance ◽  
Indian Plate ◽  
Southwestern China ◽  
Dry Valleys ◽  
Sw China ◽  
Origin And Evolution ◽  
Native Seed ◽  
River Valleys ◽  
Floristic Affinity

AbstractSavanna-like vegetation and dry thickets occur in hot dry valleys across southwestern China. Here, the flora and biogeography of these vegetations are studied. Native seed plants of 3,217 species from 1,038 genera in 163 families are recorded from the hot dry valleys in SW China. The biogeographical elements with a tropical distribution contribute 57.18%, but the ones with a temperate distribution contribute 36.45% of the total genera of the flora. This shows that the flora has proliferated by temperate elements via their evolution, although the flora occur in tropical habitats in the hot dry valleys. Floristic divergence across these hot dry valleys is obvious. The floras in the Yuanjiang (the upper reaches of the Red River) and the Nujiang (the upper reaches of the Salween River) valleys are dominated by tropical elements (77.26% and 74.49 of the total genera, respectively), but the flora of the Jinshajiang (the upper reaches of the Yangtze River) valley is composed of half tropical (47.27%) and half temperate (44.96%) genera. Regarding floristic similarities, the Jinshajiang shows the highest similarity to the Yuanjiang although these river valleys are located a great distance from each other. Our results could be well explained from the geological events since the Cenozoic, such as the uplift of Himalayas, the extrusion of Indochina, the river capture of the Jinshajiang separating from the Yuanjiang, and the northward movement of the Burma Plate. Further floristic comparison between the flora in hot dry valleys of SW China and southern Africa supports the consideration that the flora of savanna-like vegetations of SW China could have floristic affinity to African savannas over the course of its evolutionary history by the Indian Plate from southern Africa colliding with Eurasia in the Cenozoic.

Reconstruction of maximum temperature on Zhegu Mountain, western Sichuan Plateau (China)

2020 ◽  
Vol 81 ◽  
pp. 1-14
Author(s):  
M Keyimu ◽  
Z Li ◽  
Y Zhao ◽  
Y Dong ◽  
B Fu ◽  
...  
Keyword(s):  
Tree Growth ◽  
Ring Width ◽  
Volcanic Eruptions ◽  
Southwestern China ◽  
Maximum Temperature ◽  
Driving Mechanism ◽  
Western Sichuan ◽  
Relationship Analysis ◽  
Decadal Scale ◽  
Thermal Variability

Historical temperature reconstructions at high altitudes are still insufficient in southwestern China, which is considered one of the most sensitive areas to climate change in the world. Here we developed a tree ring-width chronology of Faxon fir Abies fargesii var. faxoniana at the upper timber line on Zhegu Mountain, Miyaluo Scenic Area, western Sichuan, China. The climate-tree growth relationship analysis indicated temperature as the dominant regulator on radial tree growth in this region. The reconstruction of aggregated maximum temperature (TMX) of autumn and winter for the period 1856-2016 was achieved with a linear regression model that accounted for 43.6% of the actual variability in the common time series (1954-2016). The reconstruction identified 4 warm periods and 3 cold periods. Similarities of warm and cold periods with previously published reconstructions from nearby sites indicated the reliability of our reconstruction. The significant positive correlation between TMX reconstruction and the Asian-Pacific Oscillation index and the Atlantic Multi-decadal Oscillation index suggested a linkage between large-scale climate circulations and the thermal variability at a multi-decadal scale on the western Sichuan Plateau. We also found that solar activity exerted a strong influence on decadal temperature variability in this region. The cold periods were matched well with historical large volcanic eruptions. Our results strengthen the historical climatic information in southwestern China and contribute to further understanding the regional thermal variability as well as its driving mechanism.

USING FALLOUT RADIONUCLIDES TO IDENTIFY THE EROSIONAL IMPACT OF LAND USE IN SOUTHWESTERN CHINA

2019 ◽  
Author(s):  
Paige N. Monyak ◽  
◽  
Sophia Maffie ◽  
Alexandra Grande ◽  
Emily A. Bermudez ◽  
...  
Keyword(s):  
Land Use ◽  
Southwestern China ◽  
Fallout Radionuclides

Fifteen new species and a new country record of Labomimus Sharp from China, with a checklist of world species (Coleoptera: Staphylinidae: Pselaphinae)

Zootaxa ◽  
2019 ◽  
Vol 4554 (2) ◽  
pp. 497 ◽  
Author(s):  
YU-QING ZHANG ◽  
LI-ZHEN LI ◽  
ZI-WEI YIN
Keyword(s):  
Hong Kong ◽  
New Species ◽  
Southwestern China ◽  
World Species ◽  
Diagnostic Characters ◽  
Northeastern India

The diversity of the ‘Pselaphodes complex’ of genera from Asia remains fragmentally documented. Herein we describe fifteen new species of the genus Labomimus Sharp from China: L. assingi sp. nov. and L. dilatatus sp. nov. from Shaanxi, L. longnan sp. nov. and L. minshanus sp. nov. from Gansu, L. chouwenii sp. nov. from Taiwan, L. yue sp. nov. from Guangdong, L. howaichuni sp. nov. from Hong Kong, L. jinfomontis sp. nov. from Chongqing, L. niger sp. nov. from Sichuan, L. maolan sp. nov. from Guizhou, L. corpulentus sp. nov., L. dulongensis sp. nov., and L. wuchaoi sp. nov. from Yunnan, and L. medogensis sp. nov. and L. qiujianyuae sp. nov. from Xizang. A little known species, L. torticornis (Champion), originally described from Assam, northeastern India, is newly recorded in Yunnan, southwestern China. Illustrations of the habitus and major diagnostic characters of all treated species are provided. A checklist and a distributional map of world species are given. 

Breeding biology of a high altitudinal Aethopyga sunbird in southwestern China

2020 ◽  
Vol 54 (37-38) ◽  
pp. 2381-2390
Author(s):  
Dan Liang ◽  
Yang Liu ◽  
Ge Gao ◽  
Xu Luo
Keyword(s):  
Breeding Biology ◽  
Southwestern China
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