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首页> 外文期刊>Ecological research >Coarse woody debris mass and nutrients in forest ecosystems of Korea
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Coarse woody debris mass and nutrients in forest ecosystems of Korea

机译：韩国森林生态系统中粗大的木屑碎片和养分

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摘要

Coarse woody debris (CWD) is an essential component of forests. However, quantification of both the mass and nutrient content of CWD within a given environment tends to be a fairly labor-intensive proposition that requires long-term studies to be conducted for viable data to be obtained. As a result, various aspects of CWD in forest ecosystems remain somewhat poorly understood. In this review, we have compiled all available estimates of CWD mass and nutrients from both coniferous and deciduous forests in Korea. The CWD mass data varied substantially by forest type, age, location, and sampling time, ranging from 1.5 to 24.5 Mg ha~(-1), and for the amount (kg ha~(-1)) of nutrients in the CWD, ranging from 3.5 to 23.6 for nitrogen (N), 0.8 to 4.7 for phosphorus (P), 3.9 to 13.3 for potassium (K), 25.9 to 30.9 for calcium (Ca), 1.4 to 4.2 for magnesium (Mg), and 0.1 to 0.6 for sodium (Na). The mass of CWD transferred from live trees to the forest floor ranged between 0.1 and 4.9 Mg ha~(-1) year~(-1), and these values were roughly equivalent to 26-42% of the annual litterfall inputs (2.5-10.8 Mg ha~(-1) year~(-1)) for mixed Quercus spp. forests within the relevant region. Annual nutrients inputs (kg ha~(-1) year~(-1)) through CWD decomposition were 0.7-1.6 for N, 0.04-0.3 for P, 0.3-1.0 for K, 1.7-3.1 for Ca, and 0.1-0.3 for Mg. Consequently, these results revealed that the ecological value of CWD for C and nutrient cycling was relatively insignificant. However, only a limited number of studies have been conducted on CWD in different coniferous or mixed deciduous forests in the region. As a direct result of this paucity of data, further long-term studies on CWD mass and nutrients in a variety of forest types are required in order to be able to evaluate accurately the ecological value of CWD on biodiversity and physical properties in Korean forest ecosystems.
机译：粗大的木屑（CWD）是森林的重要组成部分。但是，在给定环境中对CWD的质量和营养成分含量进行量化往往是一项相当费力的工作，需要进行长期研究才能获得可行的数据。结果，人们对森林生态系统中CWD的各个方面仍然知之甚少。在这篇综述中，我们汇总了韩国针叶和落叶林的CWD质量和养分的所有可用估计值。 CWD的质量数据因森林类型，年龄，位置和采样时间的不同而有很大差异，范围从1.5到24.5 Mg ha〜（-1），以及CWD中养分的量（kg ha〜（-1）），氮（N）为3.5至23.6，磷（P）为0.8至4.7，钾（K）为3.9至13.3，钙（Ca）为25.9至30.9，镁（Mg）为1.4至4.2，以及0.1至钠（Na）为0.6。从活树转移到林地的CWD质量范围为0.1到4.9 Mg ha〜（-1）年〜（-1），这些值大约相当于每年凋落物投入的26-42％（2.5-混合栎属为10.8 Mg ha〜（-1）年〜（-1））。有关区域内的森林。通过CWD分解产生的年度养分投入（kg ha〜（-1）年〜（-1））N为0.7-1.6，P为0.04-0.3，K为0.3-1.0，Ca为1.7-3.1,0.1-0.3镁因此，这些结果表明，CWD对碳和养分循环的生态价值相对较小。但是，在该地区不同的针叶林或落叶林中，对CWD进行的研究非常有限。由于缺乏这些数据，直接需要对各种森林类型的CWD量和养分进行长期研究，以便能够准确评估CWD对韩国森林生态系统生物多样性和物理特性的生态价值。 。

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