Effect of selective logging on stand structure and tree species diversity in a subtropical evergreen broad-leaved forest

Wu, Lichao; Liu, Jie; Takashima, Atsushi; Ishigaki, Keiichi; Watanabe, Shin

doi:10.1007/s13595-013-0292-x

Cited by 10 publications

(5 citation statements)

References 15 publications

(17 reference statements)

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“…Changes to the canopy caused by logging activities affect forest regeneration and can impact the genetic diversity and demographic structure of species as well as the diversity and abundance of forest fauna [5]- [7]. Moreover, the higher amount of incident radiation on the understory increases the susceptibility of the forest to fires, due to modification of the micro-climate and an increase in the amount of fuel material [8] [9].…”

Section: Introductionmentioning

confidence: 99%

Gap Fraction Estimates over Selectively Logged Forests in Western Amazon

Pinagé¹,

Matricardi²,

Osako³

et al. 2014

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Gap fraction is a biophysical variable related to energy balance, forest fauna, micro-climate and regeneration, and is an important indicator of forest management quality. The objective of this study was to compare gap fraction estimates from undisturbed forests and different environments or strata of selectively logged areas. Moreover, gap fraction measurements were collected with two distinct instruments (optical canopy analyzer LAI-2000 and hemispherical photographs). Field data were collected from two sustainable forest management sites at Jamari National Forest, Rondônia State, Brazilian Amazon. Our results indicated significant differences between data acquired using these two instruments. For instance, the LAI-2000 data showed greater variation for each environment compared to hemispherical photographics data, and the data were also more sensitive to the increase in gap fraction. Small variations were found in the gap fraction means for the two study areas, and only data for the undisturbed area were significantly different. A gradient of increasing gap fraction that ranged from primary forests to log decks was observed. Furthermore, a multiple linear regression analysis determined the contribution of the selectively logged environments to decreased forest cover, confirming the observed gradient.

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Section: Introductionmentioning

confidence: 99%

Gap Fraction Estimates over Selectively Logged Forests in Western Amazon

Pinagé¹,

Matricardi²,

Osako³

et al. 2014

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“…Sassen (2013) et al found that human impacts, as well as natural gradients, had major impacts on species richness patterns, and several areas in intermediate states of disturbance showed higher tree species richness than either old-growth forest or more severely degraded areas [12]. The results of some perious studies were different because these influences had a close relationship with location, histories, harvesting intensity, and recovery time, and so on [48,49]. In our study, we found the plant species richness, diversity, and evenness in natural secondary forest increased after selective harvesting at low and medium intensities, and these parameters were the highest with selective harvesting at a medium intensity.…”

Section: Discussionmentioning

confidence: 99%

Variability after 15 Years of Vegetation Recovery in Natural Secondary Forest with Timber Harvesting at Different Intensities in Southeastern China: Community Diversity and Stability

Zhou

et al. 2018

Forests

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Abstract:The mixed Cunninghamia lanceolata (Lamb.) Hook., Pinus massoniana Lamb., and hardwood forest in southeastern China is a major assemblage in natural secondary forests, and of national and international importance in terms of both timber and ecosystem services. However, over-harvesting has threatened its long-term sustainability, and there is a knowledge gap relating to the effect of harvesting on the ecosystem. After conifer species were selected for harvesting, the mixed Chinese fir, pine, and hardwood forest was changed into mixed evergreen broadleaf forest. In this context, we observed the restoration dynamics of plant communities over a period of 15 years (1996 to 2011) with different levels of harvesting intensity, including selective harvesting at low (13.0% removal of growing stock volume), medium (29.1%), high (45.8%), and extra-high (67.1%) intensities, as well as clear-cut harvesting (100.0%), with non-harvesting as the control, based on permanent sample plots established in a randomized block design in these forests in southeastern China. The impact on the richness, diversity, and evenness of plant species derived from descriptive statistical analyses was shown to initially increase, and then decrease, with an increase in harvesting intensity. The most critical impacts were on the richness, diversity, and evenness of shrub and herb species. Richness, diversity, and evenness of plant species recovered and increased under selective harvesting at low and medium intensities, while these parameters had not recovered and significantly decreased under selective harvesting at high and extra-high intensities, as well as with clear-cut harvesting. The impact on the plant community stability was derived from the stability test method of the improved Godron M. The plant community stability was closest to the point of stability (20/80) under selective harvesting at medium intensity, followed by selective harvesting at low intensity. The plant community stability was far from the point of stability (20/80) under selective harvesting at high and extra-high intensities, as well as with clear-cut harvesting. Of these treatments, clear-cut harvesting had the greatest effect with regard to reducing stability. Therefore, these results indicate that the selective harvesting at low and medium intensities is conducive to preserve or increase the species diversity and community stability. In order to prioritize promoting plant species diversity, clear-cut harvesting and selective harvesting at high and extra-high intensities should be avoided with regard to this type of forest in this region. This study sheds light on the practice of forest operation in the study region and subtropical forests with the same environment.

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“…данные мероприятия позволяют повысить пожаро-и биологическую устойчивость древостоев, снизить темпы развития корневой губки, увеличить интенсивность появления всходов и накопления подроста, предупредить естественный отпад деревьев, повысить рекреационную ценность ландшафтов и т. д. [2,3,12,14,25,26,27].…”

Section: Introductionunclassified

Evaluation of Thinning Efficiency in Pineries of Dry Forest Sites of the Kazakh Uplands

Данчева¹,

Панкратов²

2021

Lesnoy Zhurnal (Forestry Journal)

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According to the current Forest Code of the Republic of Kazakhstan, in the forest plantations of specially protected natural areas, the main forestry measures aimed at the conservation and enhancement of the protective functions of forests are intermediate felling, that is, thinning. Pinus sylvestris L. is one of the main forest-forming species in Kazakhstan. Increasing the stability of forest plantations and the possibility of forming recreationally attractive landscapes through thinning is an urgent problem for plantations growing in arid conditions. The research purpose is to analyze the effectiveness of thinning of high intensity in dry pine forests of the Kazakh Uplands for a 70-year period, using dendrochronological methods. It was proved that in dense pine forests growing in dry conditions, there is an increase in radial growth in each subsequent 10-year period after thinning. It was found with statistical certainty that the greatest response to changes caused by thinning of high intensity was observed between 1949 and 1960. Analysis of indexed tree-ring chronologies using regional curves (indexed average tree-ring chronologies of pine) using a cubic spline function revealed differences in pine radial growth indices from the site where thinning of high intensity were carried out and from the control site (time periods: 1947–1955, 1961–1970, 1981–1990, and 1995–2015). The data obtained show a positive effect of thinning of high intensity on the radial growth of trees in the considered pine forests. In dense pine forests of dry growing conditions of the Kazakh Uplands it is recommended to make 1 or 2 cuttings with thinning intensity of 25–35 % at the age of 20–25 and 40–50, respectively, with subsequent increment thinning.

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Effect of selective logging on stand structure and tree species diversity in a subtropical evergreen broad-leaved forest

Cited by 10 publications

References 15 publications

Gap Fraction Estimates over Selectively Logged Forests in Western Amazon

Gap Fraction Estimates over Selectively Logged Forests in Western Amazon

Variability after 15 Years of Vegetation Recovery in Natural Secondary Forest with Timber Harvesting at Different Intensities in Southeastern China: Community Diversity and Stability

Evaluation of Thinning Efficiency in Pineries of Dry Forest Sites of the Kazakh Uplands

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