Effect of Thinning Intensity on Litterfall Biomass and Nutrient Deposition in a Naturally Regenerated Pinus Pseudostrobus Lind. Forest in Oaxaca, Mexico

IF 1.2 4区农林科学 Q3 FORESTRY

Journal of Sustainable Forestry Pub Date : 2021-07-26 DOI:10.1080/10549811.2021.1946410

Yazmin Pérez-Alavez, G. Rodríguez-Ortiz, Wenceslao Santiago-García, Gisela Virginia Campos-Ángeles, J. R. Enríquez-del Valle, Meredith P. Martin

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引用次数: 2

Abstract

ABSTRACT Litterfall is an important component of forest biomass and nutrient cycling, and can have key impacts on soil fertility through its decomposition. However, the effect of forest management on litterfall remains unclear. We evaluate the impact of thinning intensity on the biomass and nutrient content (C and N) of litterfall in Pinus pseudostrobus forest in Oaxaca, México, across two thinning intensities in areas with either high or low residual basal area and across seasons. There was significantly higher litter carbon content in the least intensive thinning treatment, but no significant differences in biomass or nitrogen content between treatments. However, there was a significant correlation between residual basal area and litter biomass at the p < .1 level. We found a clear seasonal pattern in litterfall fluxes, with 1.5 times more litter deposition in autumn’s dry season compared to spring. We find that the thinned stand of P. pseudostrobus generated an annual mean litter biomass of 1059.27 ± 346.04 kg ha−1 with mean carbon content of 125.31 ± 46.43 kg ha−1 and mean nitrogen content of 4.76 ± 1.43 kg ha−1. These values present an important contribution for modeling of biomass and nutrient cycling in this ecologically and economically important forest type.

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间伐强度对天然再生松落叶层生物量和养分沉积的影响。墨西哥瓦哈卡州的森林

落叶层是森林生物量和养分循环的重要组成部分，其分解对土壤肥力有重要影响。然而，森林管理对乱扔垃圾的影响尚不清楚。我们评估了间伐强度对墨西哥瓦哈卡州假频闪松森林生物量和凋落物养分含量（C和N）的影响，在剩余基底面积高或低的地区，通过两种间伐强度，以及跨季节。间伐强度最小的处理的枯枝落叶碳含量显著较高，但不同处理的生物量或氮含量没有显著差异。然而，残基面积与枯枝落叶生物量之间存在显著的相关性，在p＜.1的水平上。我们发现落叶通量具有明显的季节性模式，秋季旱季的落叶沉积量是春季的1.5倍。结果表明，该林分的年平均枯枝落叶生物量为1059.27±346.04 kg ha−1，平均碳含量为125.31±46.43 kg ha−2，平均氮含量为4.76±1.43 kg ha−3。这些值对这种生态和经济上重要的森林类型的生物量和养分循环建模做出了重要贡献。

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来源期刊

Journal of Sustainable Forestry Social Sciences-Geography, Planning and Development

CiteScore

3.90

自引率

12.50%

发文量

期刊介绍： Journal of Sustainable Forestry publishes peer-reviewed, original research on forest science. While the emphasis is on sustainable use of forest products and services, the journal covers a wide range of topics from the underlying biology and ecology of forests to the social, economic and policy aspects of forestry. Short communications and review papers that provide a clear theoretical, conceptual or methodological contribution to the existing literature are also included in the journal. Common topics covered in the Journal of Sustainable Forestry include: • Ecology, management, recreation, restoration and silvicultural systems of all forest types, including urban forests • All aspects of forest biology, including ecophysiology, entomology, pathology, genetics, tree breeding, and biotechnology • Wood properties, forest biomass, bioenergy, and carbon sequestration • Simulation modeling, inventory, quantitative methods, and remote sensing • Environmental pollution, fire and climate change impacts, and adaptation and mitigation in forests • Forest engineering, economics, human dimensions, natural resource policy, and planning Journal of Sustainable Forestry provides an international forum for dialogue between research scientists, forest managers, economists and policy and decision makers who share the common vision of the sustainable use of natural resources.