Mapping Shorea natural distribution in the last remaining forests in Riau as a baseline information for conservation strategy

3rd International Symposium on LAPAN-IPB Satellite For Food Security and Environmental Monitoring 2016

地球科学;轻工业;生态环境科学

Subiakto, Atok^1 ; Rachmat, Henti Hendalastuti^1 ; Wijaya, Kesuma^2

Center for Forestry Research and Development, Forestry Research Development, and Innovation Agency (FORDIA), Ministry of Enviromental and Forestry, Jalan Raya Gunung Batu No. 5, Bogor

16118, Indonesia^1

District Secretaries of Lingga Islands Regency, Jl. Istana Robat, Daik Lingga, Riau Islands Province, Indonesia^2

关键词: Annual rates;    Conservation strategies;    Dipterocarps;    Morphological identifications;    Natural distribution;    Primary data source;    Rain forests;    Taxonomic identifications;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/54/1/012045/pdf
DOI  :  10.1088/1755-1315/54/1/012045

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Shorea divided into four groups: Shorea Red Meranti, White Meranti, Yellow Meranti and Balau. In the past, conservation was not an important issue as this groups were common and abundant. However, Sumatran rain forest were cleared and converted at annual rate of 500.000 Ha with the most extensive in the Province of Riau where had lost 63% between 1985 and 2009. This study conducted to determine the potency and availability of most valuable tropical Shorea dipterocarps in Riau Province. Lines transect and point count methods used to determine the presence any of the Shorea species in the designated remnants area. Leaves samples for morphological identification collected for further taxonomic identification. Data analysis for mapping conducted by overlying the secondary and primary data source. The result showed that the patchy remnants forests in Riau still conserve at least of around 22 Shorea species, included 14 species those of Shorea Red Meranti, 1species Shorea White Meranti, 4 species Shorea Yellow Meranti, and 3 species of Shorea Balau. However, in average the numbers of individual found for each of the species was low with uncomplete occurrence of the life stage in several spots, showing the fragility of local species loss and extinction.