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All Journal Bioscientist : Jurnal Ilmiah Biologi Makara Journal of Science
Firman Ali Rahman
Jurusan Tadris IPA-Biologi, FTK, Universitas Islam Negeri Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Social Sciences

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Kajian Daya Dukung Fungsi Lindung dan Lahan Berbasis Spasial di Kabupaten Sumbawa Alfian Pujian Hadi; Dewi Putri Lestari; Nurin Rochayati; Mas’ad Mas’ad; Firman Ali Rahman
Bioscientist : Jurnal Ilmiah Biologi Vol 9, No 2 (2021): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v9i2.4248

Abstract

This study aims to determine the carrying capacity of the protected function and the carrying capacity of land based on the ratio of land availability and demand for land in Sumbawa Regency. The research method uses a quantitative descriptive approach with an analysis of the carrying capacity of the protected function and the analysis of the carrying capacity of the land is carried out using an approach to land availability and land requirements. The results showed that the carrying capacity of the protected function of 24 sub-districts in Sumbawa Regency obtained 4 sub-districts (16.7%) in very good category, 6 sub-districts (25%) in good category, 2 sub-districts (8.3%) in moderate category, 3 sub-districts ( 12.5%) in the damaged category, and 9 sub-districts (37.5%) in the very damaged category. The sub-districts that fall into the category of severely damaged environmental carrying capacity include: Labuhan Badas, North Moyo, Moyo Hulu, Ropang, Lape, Lopok, Labangka, Maronge, and Tarano sub-districts with an environmental carrying capacity value below 0.20. The sub-districts in Sumbawa Regency that have a deficit land carrying capacity status (25%), include: Alas, Utan, Buer, Rhee, Batulanteh, Sumbawa, and Unterwilis sub-districts. Judging from the ratio of land availability and land demand, it is known that Alas, Sumbawa, and Labuhan Badas sub-districts have the smallest ratio, meaning that the level of land demand in the three sub-districts is high compared to land availability, so that the existing land is no longer able to support the needs of the population.
Phytoremediation of Lead Heavy Metals in the Mangrove Ecosystem of the Lembar Harbor Area, West Lombok Regency, Indonesia Rahman/Firman, Firman Ali; Ihsan, Muhammad Shohibul; Agustini, Dwi; Jayanti, Ervina Titi
Makara Journal of Science Vol. 29, No. 2
Publisher : UI Scholars Hub

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Abstract

Mangroves play a vital role as bioindicator plants in port areas with the potential for non-essential heavy metal contamination. This study aimed to determine the potential for phytoremediation of lead heavy metal in mangrove vegetation resulting from port operations. The research was conducted in the mangrove ecosystem of Lembar Harbor, West Lombok Regency, West Nusa Tenggara, Indonesia. Substrate, leaf, and root samples were collected using a purposive random sampling technique and analysis for testing the lead heavy metal content using atomic absorption spectrophotometry. The results showed that the average heavy metal content of lead accumulated in the substrate in each mangrove stand (14.35 ± 2.711 ppm) was higher than the average heavy metal content in the roots (5.48 ± 2.300 ppm) and leaves (3.55 ± 1.623 ppm). Further analysis showed that nine out of 10 mangrove species act as a phytostabilizer against the lead heavy metal with an average translocation factor of no more than one (0.59 ± 0.176). Only Rhizophora stylosa showed the ability for phytoextraction with a translocation factor more than one (1.488). All types of mangroves in the Lembar Harbor area had a bioconcentration factor lower than one, with an average leaf bioconcentration factor of 0.25 ± 0.115 ppm and a root bioconcentration factor of 0.39 ± 0.161 ppm. The ecological function of the mangroves in Lembar Harbor is more specifically an excluder plant for lead heavy metal bioaccumulation with a biological concentration factor (BCF) < 1 and phytoremediation (FTD) < 1, which can be affected by the low accumulated BCF of leaves and roots.
Co-Authors Alfian Pujian Hadi Dewi Putri Lestari, Dewi Putri Dwi Agustini, Dwi Ervina Titi Jayanti Ihsan, Muhammad Shohibul Mas’ad Mas’ad Nurin Rochayati