Tree Biomechanics with Special Reference to Tropical Trees

Niklas, Karl J.

doi:10.1007/978-3-319-27422-5_19

Cited by 12 publications

(6 citation statements)

References 37 publications

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“…Kekuatan angin dapat menjadi titik kritis seiring dengan bertambahnya umur dan dimensi pohon (Vogel 1989). Pohon yang tumbuh di iklim tropis cenderung memiliki beban tambahan berupa tumbuhan epifit yang dapat menambah beban tajuk pohon utama (Niklas 2016), sehingga meningkatkan pula beban muatan pada batang utama. Dengan demikian, beban tajuk yang rendah dapat mengurangi beban muatan pada batang utama E. alba.…”

Section: Kondisi Batang Utamaunclassified

ASESMEN KESEHATAN POHON PUSAKA Eucalyptus alba Reinw. ex Blume DI KEBUN RAYA BOGOR SECARA VISUAL DAN TEKNOLOGI TOMOGRAFI

Rachmadiyanto

Setyanti²,

Rahmaningtiyas³

et al. 2022

BKR

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Eucalyptus alba Reinw. ex Blume merupakan pohon pusaka di Kebun Raya Bogor yang ditanam pada tahun 1892 (umur 130 tahun di tahun 2022), hanya ada satu spesimen, dan memiliki bentuk batang yang unik. Pohon dengan kategori pusaka ini perlu dilestarikan dengan memperhatikan kondisi kesehatannya. Tujuan penelitian ini adalah menganalisis kondisi kesehatan pohon secara visual dan teknologi tomografi serta rekomendasi penanganannya. Metode yang digunakan adalah pengamatan visual berdasarkan International Society of Arboriculture dan teknologi tomografi menggunakan PiCUS 3 Sonic Tomograph. Hasil penelitian menunjukkan bahwa secara visual E. alba memiliki potensi tumbang/patah yang rendah pada batang utama. Namun setelah dilakukan pengukuran pelapukan pada batang utama di berbagai level ketinggian dengan teknologi tomografi, hasilnya adalah di ketinggian 50 cm (95%), 140 cm (76%), 550 cm (18%), dan 810 cm (11%). Oleh karena itu, E. alba memiliki potensi tumbang yang besar pada batang bagian bawah karena persentase pelapukan yang melebihi 70% dengan diameter yang besar (275 cm). Rekomendasi penanganan pohon berisiko adalah mempertahankan proses fisiologis pohon dengan menjaga kesuburan tanah, pemasangan umpan rayap, pembuatan pagar melingkar ke arah utara, pengukuran pelapukan berkala (satu tahun sekali), dan pemberian papan informasi terkait kondisi terkini dan mitigasi bahayanya. Penebangan total atau sebagian tidak direkomendasikan mengingat status E. alba sebagai pohon pusaka.

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Section: Kondisi Batang Utamaunclassified

ASESMEN KESEHATAN POHON PUSAKA Eucalyptus alba Reinw. ex Blume DI KEBUN RAYA BOGOR SECARA VISUAL DAN TEKNOLOGI TOMOGRAFI

Rachmadiyanto

Setyanti²,

Rahmaningtiyas³

et al. 2022

BKR

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Section: Introductionmentioning

confidence: 99%

“…The study used individual-level growth measured as diameter increment, and individual-level functional trait data for six broadly distributed tree species in northeastern Puerto Rico monitored from 2016 to 2019. The trait data represent key axes of functional variation related to resource uptake strategies and structure [51,52] that have shown significant effects in response to drought and hurricanes. The studied period corresponds to the recovery after a severe drought in 2015–16 associated with El Niño Southern Oscillation (ENSO) and includes the impact of hurricanes Maria (category 4) and Irma (category 4; although H. Irma did not make landfall on Puerto Rico, its winds affected the forest) in 2017.…”

Section: Introductionmentioning

confidence: 99%

The interplay of drought and hurricanes on tree recovery: insights from dynamic and weak functional responses

Umaña

2023

Proc. R. Soc. B.

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Identifying the functional traits that enable recovery after extreme events is necessary for assessing forest persistence and functioning. However, the variability of traits mediating responses to disturbances presents a significant limitation, as these relationships may be contingent on the type of disturbance and change over time. This study investigates the effects of traits on tree growth—for short and longer terms—in response to two vastly different extreme climatic events (droughts and hurricanes) in a Puerto Rican forest. I found that trees display a dynamic functional response to extreme climatic events. Leaf traits associated with efficient photosynthesis mediated faster tree growth after hurricanes, while trees with low wood density and high water use efficiency displayed faster growth after drought. In the longer term, over both drought and hurricanes, tree size was the only significant predictor of growth, with faster growth for smaller trees. However, despite finding significant trait–growth relationships, the predictive power of traits was overall low. As the frequency of extreme events increases due to climate change, understanding the dynamic relationships between traits and tree growth is necessary for identifying strategies for recovery.

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“…Root architecture refers to the horizontal and vertical distribution of roots, which significantly affects the stability of a tree [1]. This stability is influenced by various factors such as the tree's nutrition, its ability to distribute roots in the soil, the mechanical strength of its roots [2], the physical and mechanical properties of the soil [3], the depth and shape of the roots [4], the interaction between the trunk and roots [5], and the number of roots which are important factors for tree static stability [6]. However, rather than just roots, according to Nunes et al [7], the primary factor affecting the stability of a stand is a combination of biological and physical elements as whole tree conditions, such as tree dimensions (height, diameter crown size, and slenderness coefficient), tree vitality and health, as well as the clustering of trees within the stand (stand density).…”

Section: Introductionmentioning

confidence: 99%

Clarifying the Main Root Distribution of Trees in Varied Slope Environments Using Non-Destructive Root Detection

Taufiqurrachman,

Syafitri,

Rahman

et al. 2023

Forests

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Tree stability relies on the characteristics of both root and crown structures. However, studying root systems is challenging due to their underground location, often requiring destructive methods for assessment. Non-destructive approaches offer potential solutions, such as the root detector tool. However, research in this area remains limited and requires further development. This study aims to evaluate the root detector tool by inspecting the radial root distribution in trees with different tree crown shapes, both excurrent (Agathis loranthifolia) and decurrent (Samanea saman), which grow in various soil slopes and soil slope positions. In addition, we establish correlations between tree morphometry, the physical properties of soil, root attributes, sound wave velocity, and their relationship. Based on the results, it was found that the root detector tool is effective in evaluating root distribution, including identifying the main root. The slope position of the tree in a slope class influences the radial distribution of the main roots. This is related to the crown growth as indicated by the direction of its crown. Principal Component Analysis (PCA) findings suggest that parameter morphometric and soil and root properties data clustering align with slope position rather than slope class.

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Tree Biomechanics with Special Reference to Tropical Trees

Cited by 12 publications

References 37 publications

ASESMEN KESEHATAN POHON PUSAKA Eucalyptus alba Reinw. ex Blume DI KEBUN RAYA BOGOR SECARA VISUAL DAN TEKNOLOGI TOMOGRAFI

ASESMEN KESEHATAN POHON PUSAKA Eucalyptus alba Reinw. ex Blume DI KEBUN RAYA BOGOR SECARA VISUAL DAN TEKNOLOGI TOMOGRAFI

The interplay of drought and hurricanes on tree recovery: insights from dynamic and weak functional responses

Clarifying the Main Root Distribution of Trees in Varied Slope Environments Using Non-Destructive Root Detection

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