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Pinus wangii

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Taxonomy [top]

Kingdom Phylum Class Order Family
PLANTAE TRACHEOPHYTA PINOPSIDA PINALES PINACEAE

Scientific Name: Pinus wangii
Species Authority: Hu & W.C.Cheng

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(ii,iii,v)+2ab(ii,iii,v) ver 3.1
Year Published: 2013
Date Assessed: 2012-07-10
Assessor(s): Farjon, A.
Reviewer(s): Thomas, P. & Yang, Y.
Justification:
Pinus wangii is very localized. It is known from just nine herbarium collections (herbaria in China, the UK and the US) from four localities (perhaps five, two are very close). The extent of occurrence (EOO) calculated on this basis is 1,633 km² and the area of occupancy (AOO) 80 km² or less: these are both within the thresholds for Endangered. The terrain is complicated (karst mountains) and more localities probably exist. Logging has removed many of the more accessible trees and this decline is probably ongoing despite a governmental ban on logging.
History:
1998 Endangered
1997 Endangered (Walter and Gillett 1998)

Geographic Range [top]

Range Description: Recorded from China: SE Yunnan (Malipo, Xichou, Maquan). This species has been recorded from Viet Nam but the taxonomic status of those subpopulations remains unclear: see Nguyen Tien  Hiep et al. 2004. It straddles the border between the two countries. In China the extent of occurrence (EOO) is estimated to be 1,633 km2 and the area of occuipancy (AOO) is estimated to be as little as 80 km2. It is known from 4-5 locations and the population is severely fragmented.
Countries:
Native:
China (Yunnan)
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The species is known from four localities in China, three in close proximity and one further east. The pine occurs in small stands or as individual trees usually scattered on the tops and ridges of steep hills or on exposed places on the upper parts of slopes (Businský 2004). The total population size is unknown, but likely to be small. The total population size is likely to be decreasing as localized logging continues.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: Pinus wangii is probably restricted to the 'limestone country' of S China and N Viet Nam, where it occurs on steep slopes and limestone ridges, associated with Quercus variabilis and other, mostly small-leaved, evergreen trees and shrubs. Its altitudinal range there is from 500 to 1,800 m a.s.l. Tsuga chinensis, Taxus chinensis and Amentotaxus yunnanensis have also been recorded growing with this pine (Businský 2004).
Systems: Terrestrial

Use and Trade [top]

Use and Trade: Locally used for house building. This species is rare in cultivation; there are a few, mostly young, trees in botanic gardens in China, the UK and the U.S.A

Threats [top]

Major Threat(s): Logging is a continuing threat.

Conservation Actions [top]

Conservation Actions: This species is not curently known from any protected area within China. Further surveys are required to locate any addtional subpopulations in China and Viet Nam. Further research incorporating DNA techniques is necessary to determine the identity of trees in Vie Nnam

Citation: Farjon, A. 2013. Pinus wangii. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 21 October 2014.
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