Index of Mangrove Health Around the Ex-Bauxite Mining Area, Tanjungpinang City, Riau Islands Province

Diana Azizah,Wahyu Muzammil,Efriyeldi Efriyeldi,Rasoel Hamidy,Sri Murtini,Mubarak Mubarak,Febrianti Lestari,G Jameson,I Gibson,L.W Feng,H Pardi,T Yamamoto

doi:10.1051/e3sconf/202132401008

Abstract

There are several former bauxite mining areas on Bintan Island which until now have been left open and not managed properly. In Tanjungpinang, the location of the former bauxite mine is located around the mangrove forest ecosystem. The impact of bauxite mining that changes the structure, texture, and physical of the soil can interfere with the development of the root system and the growth of surrounding plants, including mangroves. Therefore, it is necessary to know the health condition of mangroves around the former bauxite mining area. The method used is a cluster plot by calculating the percentage of tree damage based on organ location, type, and level of damage. The results of the analysis show that the health condition of the mangrove forest in Tanjungpinang City is healthy (50,9%); slightly damaged (40,4%) and moderately damaged (8,8%). The locations of the organs that suffered the most damage were roots, lower and upper stems, and leaves. The most common type of damage found roots submerged in red mud; stems and leaves covered with dust and red sand; termite; broken stem; roots break and die; broken shoots; and the leaves change color. The greatest severity is found between 10% and 20%.

Highlights

Bintan Island in the Riau Archipelago has a high potential for bauxite metal
Bauxite mining activities on Bintan Island generally have not applied the concept of good mining management during operation to post-mining
The level of diversity is often used as an object in mangrove forest management, but besides that, the health condition of mangrove trees needs to be an indicator in determining mangrove management efforts

Summary

Introduction

Bintan Island in the Riau Archipelago has a high potential for bauxite metal. So that bauxite mining activities are rampantly carried out on a large scale, both legally and illegally. There has been no effort to restore (restoration) the damage to the mangrove forest around the mine site. The. Mangrove forests on Bintan Island are included in the coastal resources that can be restored [4]. The level of diversity is often used as an object in mangrove forest management, but besides that, the health condition of mangrove trees needs to be an indicator in determining mangrove management efforts. This study is expected to be able to describe the health condition of the mangroves found around the former bauxite mining areas in Materials and Method. Observations on the health of mangrove trees were carried out based on the condition of the damaged trees. The FHM plot cluster used in this study consists of 4 (four) plots (Fig. 1) located in Carang River and Senggarang respectively

Result and Discuss

Carang River

Findings

Conclusion