Abstract. Indian Ocean tsunami caused extensive damage on human life and coastal environments, including fragmented mangroves prior to 2004 tsunami. The natural regeneration of mangrove woody species was assessed in four tidal coasts of Aceh and Peninsular Malaysia during August 2015 to August 2016. A total of 23 mangrove woody species was recorded and they having good ability in term of natural regeneration at tsunami affected areas. The North coast of Aceh was recorded as richest mangrove with 22 species, followed by East coast of Aceh (17 species) and Peninsular Malaysia coast (13 species). In addition, the poorest mangrove was found in West coast of Aceh (7 species). Some species, such as Rhizophora apiculata, R. mucronata, Nypa fruticans, Scaevola taccada and Sonneratia caseolaris are found growing well in all sites. In contrast, Bruguiera cylindrica is only found in West coast of Peninsular Malaysia as same as Ceriops tagal, Phoenix paludosa and Sonneratia ovata are only found in North coast of Aceh. To date, some areas of natural regenerated mangrove were ruined by negative activities, such as illegal cutting and encroachment. Therefore, public consultations and community participations were needed to develop and conserve the important natural assets.
Abstract. Samsuri, Ahmad AG, Zaitunah A, Tambusai HK. 2019. Evaluation of suitability of plant species for lowland forest landscape restoration in Lepan watersheds, Langkat District, North Sumatra, Indonesia. Biodiversitas 20: 2903-2909. Lepan watersheds have high management priority in North Sumatra due to healthy biophysical, socio-economic conditions and issues. Many human activities, such as conversion of forest land into settlements and oil palm plantations have resulted in decreasing the ecological functions of the forest landscape. Therefore, it is necessary to initiate efforts and actions to preserve the environment in order to prevent further damage. The effort required is to restore the already damaged ecosystem with the cultivation of species of plants in accordance with the land and soil conditions of the Lepan watersheds. Four criteria are used for determining suitable plants that can be planted as well as cultivated by the community. They are plant species found in natural forests, plant species meeting the physical and soil characteristics, plant species cultivated by community and plant species based on community perceptions. Species matching was determined by scoring and weighting method. This study found that the most suitable species for restoration activities based on these four criteria is Pterospermum subpeltatum.
Bamboo is a type of grass with a high growth rate and can be a substitute for wood. The bamboo container is vast in range, so it is easy to cultivate. The number and distribution of Bamboo need to know how much Bamboo is available to meet market demand. This study aims to determine the standing stock of Bamboo in Karo districts. The method used is the multistage sampling method, which is to take samples on the map and continue with sampling in the field. Research shows that the dominant types are rope bamboo rope and green bamboo. The number of clumps found was between 600 and 1,600 per hectare. The average number of stems is 1,231 stems per ha. The most number clump bamboo ranges from 20 – 30 unit/ha; the most length bamboo section is between 25 – 30 cm.
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