tailieunhanh - Bioclimatic assessments for tea cultivation in Western Nghe An

The unfavorable area occupies only 1% of total region and the four favorable rests account for 99% of total, in which, the most favorable area is largest with about 746,355 ha, . over 50% of whole region. The three other areas are cultivable but they are less favorable in terms of either temperature or precipitation. Growing tea in Western Nghe An, even in favorable areas, it should be taken into account of the weather disadvantages in certain moments of the year such as extreme dry, cold, hot and rainy events. | Vietnam Journal of Earth Sciences 41 1 81-94 Doi 0866-7187 41 1 13586 VAST Vietnam Academy of Science and Technology Vietnam Journal of Earth Sciences http jse Bioclimatic assessments for tea cultivation in Western Nghe An Hoang Thi Huyen Ngoc1 Tran Thi Thuy Van1 Nguyen Manh Ha 1 Nguyen Quoc Binh2 Mai Thanh Tan3 1 Institute of Geography VAST Hanoi Vietnam 2 Vietnam National Museum of Nature VAST Hanoi Vietnam 3Institute of Geological Sciences VAST Hanoi Vietnam Received 13 July 2018 Received in revised form 4 December 2018 Accepted 27 January 2019 ABSTRACT Bioclimatology is applied for growing tea in the West of Nghe An province where the tea is considered as a high economic efficient plant to he priorly cultivated for reducing poverty and getting rich. Based on the bioclimatic characteristics of tea plant and regional climatic data from 1980 to 2014 the bioclimatic diagrams are built and the tea cultivability is mapped in term of annual average temperature and total precipitation for this region with regarding its district of Con Cuong as an analytical key. The climate including both temperature and precipitation in Con Cuong is relatively suitable for the tea plantation. The Western Nghe An a land of approx. million ha could be classified in five areas with different suitability for tea plant. The unfavorable area occupies only 1 of the total region and the four favorable rests account for 99 of total in which the most favorable area is largest with about 746 355 ha . over 50 of whole region. The three other areas are cultivable but they are less favorable in terms of either temperature or precipitation. Growing tea in Western Nghe An even in favorable areas it should be taken into account of the weather disadvantages in certain moments of the year such as extremely dry cold hot and rainy events. Keywords . Bioclimate climate tea Western Nghe An. 2019 Vietnam Academy of Science and Technology 1. Introduction The West of .