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Journal : Peronema Forestry Science Journal

ANALISIS PERUBAHAN PENUTUPAN KAWASAN HUTAN MANGROVE DI KECAMATAN LANGSA BARAT KOTA LANGSA TAHUN 1990, 2000 DAN 2015 Dikky Setiawan; Anita Zaitunah; Samsuri Samsuri
Peronema Forestry Science Journal Vol 5, No 1 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Mangrove forest is tropical coastal vegetation communities. Mangroves play  important role for the life of coastal society, because it can protect the coast from the storm and tsunami. This research is aimed to identify mangrove cover change and calculate area of mangrove in forest sub-district of West Langsa, Langsa regency in 1990, 2000 and 2015. The research method was used a supervised classification with maximum likelihood classifier. Image interpretation use monogram of West Langsa. The research found change of mangrove land cover in the period 1990 - 2000  become a swamp of 308.45 Ha. Within period 2000 – 2015, the land cover of mangrove area changed to be the swamp which approximately 191.38 ha. The mangrove area of West Langsa sub-district is 1.191,93 hectares (29.90%) in year 1990, 1.031,11 hectares (25.86%) in year 2000, and 1.148,49 hectares (28, 81%) in  year 2015. Keywords:  Change detection, land cover, interpretation, Landsat imagery
MODEL SPASIAL TINGKAT KERAWANAN KEBAKARAN HUTAN DAN LAHAN DI KABUPATEN ROKAN HILIR Nidya Andini; Anita Zaitunah; Samsuri Samsuri
Peronema Forestry Science Journal Vol 5, No 2 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Land and forest fires in Indonesia have become the public headline which give an impact to environmental, social and economical losses. Riau is one of the region contribute to the largest smoke annually. Based on hotspot data in 2011 until 2014 from NOAA 18 and TERRA AQUA, Rokan Hilir District in Riau is one of the district with the most hotspot.  This research is aimed to find correlation between hotspot density with fire triggers factor and to find spatial model distribution of land and forest fire index in Rokan Hilir District. This research located in four sub-district, they are Bangko, Pasir Limau Kapas, Kubu and Tanah Putih sub-district. This research used GPS, ArcGIS, ArcView and  SPSS. The research method used was primary and secondary data collecting. Spatial data analysis was performed to obtain mathematical models and visualized to have a land and forest fire risk index in Rokan Hilir District.  This research show that the farm, the closest distance to road, farthest distance to city center district and the closest distance to river is the triggers factor that has the highest of hotspot density. Spatial model of land and forest fire risk is y= 0,031+0,005X1+0,006X2+0,013X3+0,004X4 with determination coeficient value is 80,4%. The highest forest fire risk is in the farm in Pasir Limau Kapas and Kubu sub-districts and the lowest is in the forest .Keywords: spatial model, land and forest fire risk index, Rokan Hilir district.
ANALISIS PERUBAHAN TUTUPAN LAHAN KOTA LUBUK PAKAM ANTARA TAHUN 2012 DENGAN 2015 Sugiatno Sugiatno; Anita Zaitunah; Samsuri Samsuri
Peronema Forestry Science Journal Vol 5, No 2 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The development of city and the increasing number of people has become a problem, especially the decreasing of forest city land caused by the construction and development process which have been done without considering the surrounding environment. This research aims to find out the changes of land cover in the district of Lubuk Pakam between  2012 and 2015. The Classification of land cover used Landsat 7 and Landsat imagery 8 OLI. The Classification of land cover was done using supervised classification and North Sumatera’s monogram. This research showed the change of land cover between 2012 and 2015. There are decrease of some areas which are 1,58% of are paddy field, 0,57% of dry land agriculture, 0,07% of shrub and 0,14% of bare land. But there is an increase of settlement areas which is 2,36% of the area. Keywords: Land Coverage Change, Lubuk Pakam City, Image Interpretation, Landsat Imagery.
ANALISIS PERUBAHAN GARIS PANTAI DAN TUTUPAN LAHAN PASCA TSUNAMI PANTAI LHOKNGA, KECAMATAN LHOKNGA, KABUPATEN ACEH BESAR Tia Novita Siregar; Anita Zaitunah; Samsuri Samsuri
Peronema Forestry Science Journal Vol 5, No 2 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

This research describes coastline and land cover changes of Lhoknga beach after tsunami. This research used images satellite of Landsat 5 and Landsat 8. Image interpretation used supervised classification approach with the method of Maximum likelihood classifier. Image interpretation used visual analysis based on monogram North Sumatra. The research showed that coastline changes are caused by abrasion and accretion. Abrasion reduced the area of the beach 45,81 hectares in the period 2000 to 2013. Accretion increased the area of the beach 36,99 ha in the period 2000 to 2013. The largest land cover change between 2000 and 2005 were open land and bush.  The open land increased 716.95 ha and bush reduced 1.658,98 ha. The largest land cover changes in the period 2005 to 2013 were bush and forest. The bush increased 1.078,22 ha and forest reduced 823,01 ha. Key words: coastline change, land coverage, Aceh tsunami, Lhoknga Beach.