ANALISIS KUALITAS UDARA BERDASARKAN BIOINDIKATOR LICHEN, CO2 DAN PM2.5. DI UIN RADEN INTAN LAMPUNG

ALFANNI, PUTRIKA SARI (2026) ANALISIS KUALITAS UDARA BERDASARKAN BIOINDIKATOR LICHEN, CO2 DAN PM2.5. DI UIN RADEN INTAN LAMPUNG. Diploma thesis, UIN RADEN INTAN LAMPUNG.

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Abstract

ABSTRAK Kualitas udara di lingkungan kampus dapat dipengaruhi oleh aktivitas kendaraan bermotor, mobilitas sivitas akademika, dan kondisi lingkungan. Penelitian ini bertujuan untuk mendeskripsikan kualitas udara berdasarkan konsentrasi CO₂, PM₂.₅, dan kondisi lichen sebagai bioindikator, serta menganalisis perbedaan kondisi lichen antar lokasi pengamatan di UIN Raden Intan Lampung. Penelitian menggunakan metode deskriptif kuantitatif pada empat lokasi pengamatan, yaitu Rektorat Lama, ICT, PGMI, dan Embung Utama. Parameter yang diamati meliputi konsentrasi CO₂, PM₂.₅, kelimpahan lichen, warna talus, dan diameter talus. Analisis data dilakukan secara deskriptif, sedangkan perbedaan kelimpahan lichen diuji menggunakan uji Kruskal–Wallis. Hasil penelitian menunjukkan bahwa konsentrasi CO₂ berkisar 444,92–485,57 ppm dan PM₂.₅ berkisar 24,61–25,46 µg/m³. Kelimpahan lichen tertinggi ditemukan di Rektorat Lama dan terendah di PGMI. Seluruh lichen yang ditemukan memiliki warna talus hijau keabu-abuan dengan variasi diameter talus antar lokasi. Hasil uji Kruskal–Wallis menunjukkan bahwa kelimpahan lichen tidak berbeda secara signifikan antar lokasi (p = 0,104). Meskipun demikian, secara deskriptif terdapat variasi kondisi kualitas udara dan morfologi lichen pada setiap lokasi. Pengukuran CO₂, PM₂.₅, dan pengamatan lichen dapat digunakan sebagai pendekatan yang saling melengkapi dalam menggambarkan kondisi kualitas udara di lingkungan kampus. Kata kunci: Bioindikator, CO₂, kualitas udara, lichen, PM₂. ABSTRACT Air quality in university environments can be influenced by vehicle emissions, campus activities, and surrounding environmental conditions. This study aimed to describe air quality based on carbon dioxide (CO₂), fine particulate matter (PM₂.₅), and lichen as a bioindicator, as well as to analyze differences in lichen conditions among observation sites at UIN Raden Intan Lampung. This study employed a quantitative descriptive method at four observation sites: the Old Rectorate Building, ICT Building, PGMI Building, and the Main Pond Area. The observed parameters included CO₂ concentration, PM₂.₅ concentration, lichen abundance, thallus color, and thallus diameter. Data were analyzed descriptively, while differences in lichen abundance were tested using the Kruskal–Wallis test. The results showed that CO₂ concentrations ranged from 444.92 to 485.57 ppm, whereas PM₂.₅ concentrations ranged from 24.61 to 25.46 µg/m³. The highest lichen abundance was recorded at the Old Rectorate Building, while the lowest was found at the PGMI Building. All observed lichens exhibited a grayish-green thallus with variations in thallus diameter among sites. The Kruskal–Wallis test indicated no significant difference in lichen abundance among the observation sites (p = 0.104). Nevertheless, descriptive analysis revealed variations in air quality and lichen morphology across the study sites. These findings suggest that measurements of CO₂, PM₂.₅, and lichen observations can provide complementary information for assessing air quality in a university environment. Keywords: air quality, bioindicator, carbon dioxide (CO₂), Lichen, particulate matter (PM₂.₅

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