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熱帯都市公園における生物多様性と炭素貯留：インドネシア・ジャカルタにおける自然を基盤とした解決策への示唆

Biodiversity and Carbon Storage in a Tropical Urban Park: Implications for Nature-Based Solutions in Jakarta, Indonesia (原題)

N. M. Heriyanto, Laode Alhamd, I Wayan Susi Dharmawan, Hendra Gunawan, Pratiwi, R. Garsetiasih, Rozza Tri Kwatrina, Nina Mindawati, Mahfudz, Imawan Wahyu Hidayat, Reny Sawitri, Budi Hadi Narendra, Marfuah Wardani, Sona Suhartana, Lutfy Abdulah, Titiek Setyawati, Darwo, Mariana Takandjandji, Yunita Lisnawati

Land📚 査読済 / ジャーナル2026-08-20#生物多様性対象セクター: real_estate
DOI: 10.3390/land15081514
原典: https://doi.org/10.3390/land15081514

🤖 gxceed AI 要約

日本語

本研究は、ジャカルタの都市公園における樹木センサスを実施し、地上部炭素貯留量と生物多様性を定量化した。総AGBは5873.63 Mg、平均炭素密度は444.64 Mg C ha⁻¹で、優占するヤシ類が炭素貯留に大きく寄与した。小さな都市公園でも地域的な炭素貯留と生物多様性保全に貢献できることを示し、構造的多様性と在来種の導入を重視した植栽戦略の重要性を強調している。

English

This study conducted a complete tree census in an urban park in Jakarta, quantifying above-ground carbon stocks and biodiversity. Total AGB reached 5873.63 Mg with a mean carbon density of 444.64 Mg C ha-1, largely driven by dominant ornamental palms. Findings show that even small tropical urban parks can serve as significant localized carbon storage while sustaining biodiversity, underscoring the value of structurally diverse, native-enriched planting strategies.

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

📝 gxceed 編集解説 — Why this matters

日本のGX文脈において

日本では、都市緑地の炭素貯留機能はカーボンニュートラル施策の一部として注目されつつあるが、本研究成果は熱帯都市の事例であり、日本の気候・植生とは直接対応しない。ただし、都市計画や緑地管理におけるNBSの評価手法として参考になる点はある。

In the global GX context

This study contributes to the global discourse on nature-based solutions (NBS) by providing empirical evidence from a tropical megacity. It demonstrates how urban parks can serve as carbon sinks while supporting biodiversity, which is relevant for cities worldwide seeking to integrate NBS into climate mitigation and adaptation strategies, aligning with global frameworks like the Paris Agreement and the post-2020 Global Biodiversity Framework.

👥 読者別の含意

🔬研究者:Provides empirical data on carbon storage and biodiversity in tropical urban parks, useful for urban ecology and NBS research.

🏢実務担当者:Offers insights for urban planners and landscape architects on designing parks to maximize carbon storage and biodiversity.

🏛政策担当者:Highlights the value of urban green spaces in climate and biodiversity policy, supporting NBS integration in city planning.

📄 Abstract（原文）

Urban green open spaces play a critical role in mitigating greenhouse gas emissions and enhancing biodiversity in rapidly urbanizing tropical megacities. This study aims to characterize vegetation structure and species diversity, as well as quantify above-ground carbon stocks in Taman Bendera Pusaka, South Jakarta, Indonesia. The results are expected to inform evaluations of urban parks’ contribution as nature-based solutions. A complete tree census was conducted between August and September 2025, recording diameter at breast height, height, and species identity for all individuals. Above-ground biomass (AGB) for woody trees was estimated using a widely applied pantropical allometric model developed for humid tropical forests, while separate generalized equations were applied respectively to the palms and bamboos groups to account for their distinct morphological characteristics. The estimated biomass values were subsequently converted into carbon stocks and CO2 equivalents. Biodiversity was evaluated using Margalef richness, Shannon–Wiener diversity, and Pielou’s evenness indices. A total of 2459 individuals were recorded. Langsat Park had the highest species richness (S = 79) with diversity (H′ = 3.38; E = 0.77), and Leuser (S = 78) with highest diversity (H′ = 3.44; E = 0.79), whereas Ayodya Parks showed the lowest structures and diversity values (S = 33; H′ = 2.18; E = 0.68). Total AGB reached 5873.63 Mg, with a mean carbon density of 444.64 Mg C ha−1 or 1631.82 Mg CO2 ha−1. Carbon storage was largely driven by a few dominant ornamental palms, particularly Roystonea regia, although native canopy trees contributed to structural stability. These findings show that even relatively small tropical urban parks can serve as significant localized carbon storage while sustaining urban biodiversity, underscoring the value of structurally diverse, native-enriched planting strategies for resilient urban forest management.

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