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Water and Sediment Quality Index Due To Gold Mining in The Krueng Kluet Hilir Watershed, Aceh Selatan Regency Ichwana Ramli; Syahrul .; Mutia Rizka Lestari
Aceh International Journal of Science and Technology Vol 9, No 1 (2020): April 2020
Publisher : Graduate Program of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (764.113 KB) | DOI: 10.13170/aijst.9.1.15267

Abstract

Increasing population growth, economic and industrial development will lead to the utilization of natural resources effected on water pollution. One of those activities related to natural resource utilization is gold mining. Mining activities cannot be separated from the use of chemicals that are harmful to living things; for example, it is mercury. This study aims to determine levels of mercury (Hg) that accumulate in water and sediments. The tools used in this research are QGIS 2.18.27 software and Global Positioning System. The material used is water and sediment samples. Water and sediment samples were analyzed at the Industrial Standardization Research Institute Laboratory to obtain several potential parameters such as hydrogen (pH), mercury (Hg), Lead (Pb), Iron (Fe), and Copper (Cu). These potential parameters are further analyzed using the Pollution Index (PI) method and Sediment Quality Guidelines (SQGs). The results demonstrated that the water quality in downstream of Krueng Kluet sub-watershed in for 2019 using the Pollution Index (PI) method for the drinking water (Class I) with the value is 6.2036. It is classified as moderately polluted water quality criteria and for the agricultural water (Class IV) with the value is 6.0796, classified as moderately polluted water quality criteria. The quality of sediments in the downstream of Krueng Kluet sub-watershed using the sediment quality guidelines method with the value is 0.2343 is classified as an adverse effect for the biota of heavy metals on medium value. This shows that neither the water quality nor the sediment in the downstream of Krueng Kluet sub-watershed does not accord with the water and sediment quality standards. Pollution Index can assess the quality of water bodies and becomes a consideration in taking actions to improve water quality. At the same time, SQGs show chemical concentrations that have biological effects on aquatic biodata.
Identifikasi Distribusi Lahan Kritis pada Daerah Aliran Sungai (DAS) Krueng Peusangan Farah Nabila; Purwana Satriyo; Ichwana Ramli
Jurnal Ilmiah Mahasiswa Pertanian Vol 7, No 4 (2022): November 2022
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (552.456 KB) | DOI: 10.17969/jimfp.v7i4.22218

Abstract

Abstrak, Pertambahan jumlah penduduk, kesejahteraan masyarakat dan peningkatan kualitas hidup berdampak pada meningkatnya berbagai macam fasilitas yang membutuhkan lahan. Penggunaan lahan dan kondisi biofisik DAS merupakan faktor yang dapat mempengaruhi fungsi DAS. Diantara faktor-faktor tersebut terdapat interaksi yang apabila terjadi perubahan pada salah satu komponen  maka dapat merubah komponen lainnya. Pemanfaatan sumberdaya lahan dan sumberdaya air harus memperhatikan konservasi tanah dan air agar tidak menimbulkan masalah-masalah seperti degradasi lahan. Degradasi lahan yaitu menurunnya produktivitas lahan yang disebabkan oleh aktivitas manusia yang apabila terus dibiarkan akan mengakibatkan lahan kritis. Distribusi lahan kritis di DAS Krueng Peusangan didapatkan dengan overlay peta erosi, peta tutupan lahan, peta kemiringan lereng dan peta fungsi kawasan. Hasil penelitian didapatkan bahwa distribusi tingkat lahan kritis di DAS Krueng Peusangan yaitu keadaan lahan tidak kritis seluas 38.721,05 Ha atau sebesar 15%, lahan potensial kritis 24.967,06 Ha atau sebesar 10%, lahan agak kritis yaitu seluas 134.614,51 Ha atau sebesar 53%, lahan kritis seluas 23.379,32 Ha atau sebesar 9% dan lahan sangat kritis seluas 33.766,19 Ha atau sebesar 13%. Distribusi lahan kritis di DAS Krueng Peusangan didominasi oleh keadaan lahan agak kritis yang tersebar di luar kawasan hutan dan di dalam kawasan hutan. Identification of the Distribution of Critical Land in the Krueng Peusangan WatershedAbstract, Population growth, community welfare and improving the quality of life have an impact on increasing various kinds of facilities that require land. Land use and watershed biophysical conditions are factors that can affect the function of the watershed. Among these factors there is an interaction that if there is a change in one component it can change the other component. Utilization of land and water resources must pay attention to soil and water conservation so as not to cause problems such as land degradation. Land degradation is a decrease in land productivity caused by human activities which if left unchecked will result in critical land. The distribution of critical land in the Krueng Peusangan watershed was obtained by overlaying erosion maps, land cover maps, slope maps and area function maps. The results showed that the distribution of critical land levels in the Krueng Peusangan watershed is the condition of non-critical land covering an area of 38,721.05 Ha or 15%, critical potential land 24,967.06 Ha or 10%, somewhat critical land covering an area of 134,614.51 Ha or equal to 53%, critical land area of 23,379.32 ha or 9% and very critical land area of 33,766.19 ha or 13%. The distribution of critical land in the Krueng Peusangan watershed is dominated by moderately critical land that is spread outside the forest area and inside the forest area.