Model Penduga Biomassa Hutan Mangrove Menggunakan Citra Satelit Sentinel -2A di Kabupaten Rembang Jawa Tengah

Jurnal Wana Tropika Pub Date : 2024-01-16 DOI:10.55180/jwt.v13i2.1018

Ashari Ramadhan, Siman Suwadji

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Abstract

Mangrove forest is one of the forests that has the highest carbon storage in the tropics and is very high compared to the average carbon storage in various other forest types in the world, which contains around 1.023 Mg of carbon per hectare. This study aims to obtain a model for estimating the biomass potential of mangrove forests in Rembang Regency by utilizing Sentinel-2A Satellite imagery and making a map of the distribution of mangrove forest biomass potential through the best equation model. Sampling was done by purposive systematic sampling method. The correlation test results obtained a value of 0.640 which states that there is a strong relationship between biomass and NDVI. Biomass estimation modeling uses equation models namely Linear, Quadratic, Power, and Exponential. Model selection is done by considering several parameters such as R², RMSE, Bias, χ²-hit, SA, and SR. The selected model for estimating mangrove forest biomass potential is the quadratic model ???? = 17.4 -110.2 ???????????????? + 220 ????????????????² with an R² value of 0.474, RMSE value of 51.55, Chi-square test result of 3.46 and has the highest score value. The potential biomass distribution map generated from the selected model consists of 3 classes, namely classes < 3.7 (tons/ha), 3.7-10.5 (tons/ha), 10.5-35.7 (tons/ha). Mangrove forests in Rembang Regency have dominant biomass potential in the 10.5-35.7 (tons/ha) class.

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利用中爪哇 Rembang 地区哨兵-2A 卫星图像的红树林生物量估算模型

红树林是热带地区碳储量最高的森林之一，与世界其他各类森林的平均碳储量（每公顷约含 1.023 兆克碳）相比，红树林的碳储量非常高。本研究旨在利用 Sentinel-2A 卫星图像获得估算伦邦地区红树林生物量潜力的模型，并通过最佳方程模型绘制红树林生物量潜力分布图。取样采用有目的的系统取样法。相关性测试结果的数值为 0.640，表明生物量与 NDVI 之间存在密切关系。生物量估算模型采用线性、二次、幂和指数方程模型。选择模型时要考虑 R²、RMSE、Bias、χ²-hit、SA 和 SR 等参数。用于估算红树林生物量潜力的选定模型是二次模型 ????= 17.4 -110.2 ????????????????+ 220 ????????????????²，R²值为 0.474，RMSE 值为 51.55，Chi-square 检验结果为 3.46，得分最高。所选模型生成的潜在生物量分布图包括 3 个等级，即 < 3.7（吨/公顷）、3.7-10.5（吨/公顷）、10.5-35.7（吨/公顷）。伦邦地区红树林的生物量潜力主要集中在 10.5-35.7（吨/公顷）级。

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Jurnal Wana Tropika

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