Overview

Distribution

Range Description

China: S Gansu, NW Hubei, S Shaanxi, W Sichuan, NW Yunnan, SE Xizang [Tibet]; NE India: Arunachal Pradesh (Assam Himalaya); N Myanmar [Burma]; Bhutan (?).
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S Gansu, W Henan, W Hubei, SE Shaanxi, Sichuan, SE Xizang, NW Yunnan [Bhutan, N Myanmar]
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Physical Description

Morphology

Description

Trees to 30 m tall; trunk to 1 m d.b.h.; bark gray or grayish brown, longitudinally fissured into thick, square plates or irregularly flaking; crown conical-pyramidal; branchlets pendulous, initially pale yellow or brownish yellow, turning brownish yellow or brown in 2nd or 3rd year, finally gray; winter buds often ovoid or ovoid-conical, rarely conical at apex, scales appressed at base of branchlets. Leaves directed forward and closely appressed on upper side of branchlets, spreading and almost pectinately arranged on lower side, linear, not parallel sided, slightly curved or straight, flattened, 1-2.2(-2.5) cm × 1-1.5 mm, slightly keeled on both sides, stomatal lines 5-7 in each of 2 white or pale bands adaxially, apex acute or mucronate. Seed cones green, red- or purple-brown, maturing dull brown or brown tinged purplish, ovoid- or cylindric-oblong, 6-10(-12) × 3-4 cm. Seed scales at middle of cones obovate-oblong or rhombic, 1.4-2.2 × 1.1-1.3 cm, base cuneate, distal margin usually recurved, sometimes elongate. Seeds ca. 1.2 cm including wing. Pollination Apr-May, seed maturity Sep-Oct.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Picea brachytyla is a high mountain species, occurring between 1,300 m and 3,800 m a.s.l. The soils are grey brown mountain podzols. The climate is cold and wet, with annual precipitation from 1,000 mm (N) to more than 2,500 mm (S), where the monsoon influence is stronger. It is a constituent of the montane coniferous forest of the eastern parts of the Himalaya and the mountains of the SW Plateau of China (Wang 1961), with Abies densa, A. forrestii, Picea likiangensis, Pinus wallichiana, Tsuga dumosa, and Larix potaninii as major species. Taxus wallichiana is commonly found as an understorey tree in the Himalayan part of its range.

Systems
  • Terrestrial
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Mountain slopes, valleys, river basins; 1500-3800 m.
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Picea brachytyla

The following is a representative barcode sequence, the centroid of all available sequences for this species.


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Statistics of barcoding coverage: Picea brachytyla

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 6
Specimens with Barcodes: 16
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
VU
Vulnerable

Red List Criteria
A2cd

Version
3.1

Year Assessed
2013

Assessor/s
Zhang, D, Katsuki, T. & Rushforth, K.

Reviewer/s
Thomas, P. & Farjon, A.

Contributor/s

Justification
Based on the assessment of its varieties (var. brachytyla and var. complanata), the species as a whole is considered Vulnerable due to extensive past (at least in some parts of its range) exploitation resulting in a population reduction of more than 30% over the past 90 years (three generations).

History
  • 1998
    Vulnerable
  • 1997
    Vulnerable
    (Walter and Gillett 1998)
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Population

Population
The extent of population declines are not documented but are estimated to be considerable.

Population Trend
Unknown
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Threats

Major Threats
Extensive logging in much of its range has reduced the area of occupancy of this species substantially, especially in China. The situation in other parts of its range is uncertain.
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Management

Conservation Actions

Conservation Actions
The Government of China has recently imposed a ban on logging in western China.
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Wikipedia

Picea brachytyla

Picea brachytyla is a species of conifer in the Pinaceae family. It is found only in China. It is threatened by habitat loss.

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Notes

Comments

A vulnerable species in China. The timber is used for construction, aircraft, machines, and wood pulp. The species is also cultivated for afforestation.
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