From tree to plot: investigating stem CO2 efflux and its drivers along a logging gradient in Sabah, Malaysian Borneo

IF 8.3 1区生物学 Q1 PLANT SCIENCES

New Phytologist Pub Date : 2024-08-15 DOI:10.1111/nph.20043

Maria B. Mills, Sabine Both, Palasiah Jotan, Walter Huaraca Huasco, Rudi Cruz, Milenka M. Pillco, David F. R. P. Burslem, Colin Maycock, Yadvinder Malhi, Robert M. Ewers, Juan Carlos Berrio, Jörg Kaduk, Susan Page, Rolando Robert, Yit A. Teh, Terhi Riutta

引用次数: 0

Abstract

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从树木到地块：沿马来西亚婆罗洲沙巴州的伐木梯度调查茎干二氧化碳外流及其驱动因素。

茎呼吸在森林生态系统的自养呼吸中占很大比例，但人们对其在不同空间尺度和土地利用梯度上的驱动因素仍然知之甚少。本研究对马来西亚婆罗洲地区伐木干扰对茎干二氧化碳外流（EA）的影响进行了量化和研究。研究采用静态室法，在伐木梯度从重度伐木到老林的9个1公顷地块中，对树木和林分层面的EA进行了量化。树木层面的结果显示，伐木地块与老林地块的单位茎干面积 EA 值更高（37.0 ± 1.1 vs 26.92 ± 1.14 g C m-2 month-1）。然而，在林分层面，伐木地块和老林地块的 EA 没有差异（6.7 ± 1.1 vs 6.0 ± 0.7 兆克碳公顷-1 年-1），原因是老林地块的茎表面积更大。伐木地块的生长呼吸分配和碳利用效率明显更高。树木和林分层面的 EA 差异受树木大小、生长情况以及不同森林类型之间投资策略差异的影响。这些结果反映了不同的资源分配策略和优先次序，伐木地块优先考虑生长以应对光照的增加，而古老生长地块则优先考虑维护和细胞结构。

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来源期刊

New Phytologist 生物-植物科学

自引率

5.30%

发文量

728

期刊介绍： New Phytologist is an international electronic journal published 24 times a year. It is owned by the New Phytologist Foundation, a non-profit-making charitable organization dedicated to promoting plant science. The journal publishes excellent, novel, rigorous, and timely research and scholarship in plant science and its applications. The articles cover topics in five sections: Physiology & Development, Environment, Interaction, Evolution, and Transformative Plant Biotechnology. These sections encompass intracellular processes, global environmental change, and encourage cross-disciplinary approaches. The journal recognizes the use of techniques from molecular and cell biology, functional genomics, modeling, and system-based approaches in plant science. Abstracting and Indexing Information for New Phytologist includes Academic Search, AgBiotech News & Information, Agroforestry Abstracts, Biochemistry & Biophysics Citation Index, Botanical Pesticides, CAB Abstracts®, Environment Index, Global Health, and Plant Breeding Abstracts, and others.