Details of this species in Shanxi
Occurrence: Established and expanding
Source: Yan et al. 2005
Species Notes for this Location:
Dendroctonus valens was probably introduced into China in the early 1980s when unprocessed logs were imported from the west coast of the USA (report on file at Chinese Academy of Sciences, Beijing, in Yan et al. 2005). Since 1999 D. valens has spread rapidly from Shanxi province to the adjacent provinces of Hebei, Henan, and Shaanxi and infested over 500 000 hectares of pine forest, causing extensive tree mortality. Pines are a major reforestation tree in China and P. tabuliformis is widely planted across a large portion of the country making the potential range of D. valens is nationwide (Britton and Sun 2002, in Yan et al. 2005).
D. valens is widely distributed in Shanxi province, and parts of the adjacent provinces of Hebei, Henan, and Shaanxi. The most heavily attacked forests are located in the Taihang, Lulang, and Zhongtiao Mountains in Shanxi province, from 600 to 2000 meters elevation (Zhang et al. 2002, in Yan et al. 2005). To date, the red turpentine beetle has been found in 62 counties, eight forestry Bureaus and two afforested mine stands.
Management Notes for this Location:
The Chinese State Forestry Administration currently ranks the red turpentine bark beetle as the second most important national forest pest (Yan et al. 2005). A National Management Project was initiated for D. valens in 2000. In 2001, eastern Shaanxi became infested. About 30% of the 85 300 hectares of pine forest in the province have been infested. About 7% of P. tabuliformis died in 2001. In 2002 D. valens infestations extended into Henan province but quick action by the State Forestry Administration appears to have kept damage to a minimum. Restrictions on unauthorized tree harvesting and the movement of infested material (logs, wood blocks, and wood boxes with bark) have been strictly enforced (Yan et al. 2005).
Last Modified: 16/02/2009 3:34:24 p.m.