Potensi Trembesi (Samanea saman) sebagai Pendegradasi Kadar Karbon di Hutan Kampus Universitas Negeri Surabaya

Potential of Trembesi (Samanea saman) as Carbon Degradation in the Campus Forest of Surabaya State University

Trembesi (Samanea saman) merupakan salah satu tumbuhan yang memiliki kemampuan menyerap karbondioksida (CO₂) dan menyimpannya dalam bentuk biomassa. Penelitian bertujuan untuk menganalisis potensi Trembesi (Samanea saman) dalam mendegradasi karbon di hutan kampus Universitas Negeri Surabaya. Penelitian dilakukan menggunakan metode kuantitatif dengan pengukuran parameter morfologi, meliputi tinggi pohon, keliling batang, diameter batang, dan luas permukaan daun, kadar klorofil, serta parameter fisika kimia lingkungan meluputi suhu kelembaban, kadar karbondioksida (CO₂), intensitas cahaya, dan pH tanah. Analisis data menggunakan persamaan allometrik untuk menghitung biomassa dan stok karbon serta koefisien korelasi untuk mengetahui hubungan tiap parameter dengan stok karbon. Hasil penelitian menunjukkan Trembesi (Samanea saman) di hutan kampus Universitas Negeri Surabaya memiliki rerata stok karbon dengan klasifikasi tinggi sebesar (227,85±297,56)kg/m² yang dipengaruhi oleh diameter batang, suhu udara, dan pH tanah dengan koefisien determinasi (R²) secara berurutan, yaitu 99,65%, 99,49%, dan 98,97%, serta klorofil yang berpengaruh secara signifikan dan berkorelasi positif sangat kuat terhadap stok karbon. Penelitian ini menunjukkan Trembesi (Samanea saman) di hutan kampus Universitas Negeri Surabaya berkontribusi dalam mitigasi efek rumah kaca dan mendukung keberlanjutan lingkungan.

Kata kunci: Trembesi, Hutan Kampus, Allometrik, Biomassa, Stok Karbon

Trembesi (Samanea saman) is one of the plants that has the ability to absorb carbon dioxide (CO₂) and store it in the form of biomass. The study aims to analyze the potential of Trembesi (Samanea saman) in degrading carbon in the Surabaya State University campus forest. The research was conducted using quantitative methods by measuring morphological parameters, including tree height, trunk circumference, trunk diameter, and leaf surface area, chlorophyll content, as well as environmental physico-chemical parameters including temperature humidity, carbon dioxide (CO₂) content, light intensity, and soil pH. Data analysis used the allometric equation to calculate biomass and carbon stocks and the correlation coefficient to determine the relationship between each parameter and carbon stocks. The results showed that Trembesi (Samanea saman) in the Surabaya State University campus forest had an average carbon stock with a high classification of (227.85 ± 297.56) kg/m² which was influenced by stem diameter, air temperature, and soil pH with the coefficient of determination (R²) sequentially, namely 99.65%, 99.49%, and 98.97%, as well as chlorophyll which had a significant effect and a very strong positive correlation with carbon stock. This research shows that Trembesi (Samanea saman) in the Surabaya State University campus forest contributes to mitigating the greenhouse effect and supporting environmental sustainability.

Key words: Trembesi, Campus Forest, Allometric, Biomass, Carbon Stock