TAILIEUCHUNG - Summary of Phd. dissertation in forestry: Research on scientific bases and propose some conservation measures for Pseudotsuga brevifolia W. C Cheng & L. K. Fu, 1975 in Ha Giang province

Objectives: General objectives Supplement the biological and ecological characteristics of Pseudotsuga brevifolia W. C Cheng & . Fu to the scientific bases for development and convervation of this specie in Vietnam. | MINISTRY OF EDUCATION AND TRAINING THAI NGUYEN UNIVERSITY LE VAN PHUC RESEARCH ON SCIENTIFIC BASES AND PROPOSE SOME CONSERVATION MEASURES FOR PSEUDOTSUGA BREVIFOLIA . CHENG L. K. FU 1975 IN HA GIANG PROVINCE Speciality SILVICULTURE Code 62 62 02 05 SUMMARY OF PHD. DISSERTATION IN FORESTRY THAI NGUYEN - 2016 The dissertation has been completed at College of Agriculture and Forestry - TNU Scientific supervisors 1. LE DONG TAN PhD. 2. Prof. DANG KIM VUI PhD. Reviewer 1 . Reviewer 2 . Reviewer 3 . PhD. Dissertation will be presented and defended at the College of Agriculture and Forestry - Thai Nguyen University Time .Date . PhD. Dissertation would be found in National Library Learning Resources Centre - TNU Library of College of Agriculture and Forestry. 1 INTRODUCTION 1. Statement of the problem There are 75 species of Pseudotsuga in around the world. At present in Vietnam there is only one specie has been detected Pseudotsuga chinensis Dode or Pseudotsuga chinensis var. brevifolia W. C. Cheng L. K. Fu Farjon Silba according to Nguyen Tien Hiep. Pseudotsuga brevifolia is one of 33 national level endangered pine species in Vietnam. According to the Red book of Vietnam 2007 Pseudotsuga brevifolia only grows on the limestone mountain with the altitude more than 1000 meters above sea level and under threaten by over exploitation and natural habitat dilapidation. However the scientific data for conservation of this species has not been adequately studied for instance classification distribution biological ecology characteristics and regeneration propagation of Pseudotsuga brevifolia in Ha Giang province has many limitation. Thus it is necessary to have an advanced study on the morphological ecological and phenological characteristics of this species to be the constructing the measures for conservation and development of this rare species. In this context it is necessary to have Research on scientific bases and propose some conservation measures for Pseudotsuga .

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• Ha Giang province
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