Analyzing the impact of climate and management factors on the productivity and soil carbon sequestration of poplar plantations

Wang, Dan; Fan, Junjun; Jing, Panpan; Cheng, Yong; Ruan, Honghua

doi:10.1016/j.envres.2015.10.016

Cited by 10 publications

(2 citation statements)

References 52 publications

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“…Over the most recent ten years, most studies on poplar plantations have been focused on renewable bioenergy with short-rotation coppice [21,22], potential utilization of phytochemicals [23], the relationship between genetic diversity and productivity [24][25][26], and site productivity maintenance [27][28][29][30][31]. Although more attention has been paid to the role of poplar plantations in CO 2 sequestration in China [15,16,32], there has been no comprehensive study of how management practices affect the soil-atmosphere fluxes of GHGs in poplar plantations and how these GHG emissions impact the total GHG balance. In order to increase the production of merchantable timber, thinning is commonly used in managing poplar plantations in China.…”

Section: Introductionmentioning

confidence: 99%

Thinning Intensity Affects Soil-Atmosphere Fluxes of Greenhouse Gases and Soil Nitrogen Mineralization in a Lowland Poplar Plantation

Fang

Lin

Tian

et al. 2016

Forests

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Abstract:Thinning is one of the intensive forest management techniques commonly applied to increase the merchantable timber volume. However, how thinning affects soil-atmospheric fluxes of greenhouse gases (GHGs) is poorly understood. A field experiment with four treatments (CK: unthinned; MB: medium intensity thinning from below; HB: high intensity thinning from below; and HI: high intensity thinning by removing every alternative row of trees) was conducted to assess the impact of thinning regimes on soil-atmospheric fluxes of GHGs (CO 2 , CH 4 , and N 2 O) and soil nitrogen mineralization in a poplar plantation established on a lowland. Thinning significantly increased soil water content and water table in the high thinning treatments (HB and HI) and tended to increase soil temperature (p < 0.10). The result of the one-year study showed that estimated annual emissions of CO 2 and CH 4 were higher in HB and HI than in other treatments, while the highest emission of N 2 O was in the CK. The thinning treatments increased the annual emission of CO 2 by 23%-64% and that of CH 4 by 190%-1200%, but decreased that of N 2 O by 41%-62%. Thinning increased annual N mineralization by 50.3% in HI and 30.1%in HB. Changes in soil temperature and water table drove CO 2 , CH 4 , and N 2 O emissions, while soil water content was the most important factor driving CH 4 emission. We conclude that the moderate thinning (MB) regime is the best thinning option to minimize the impact on GHG emissions for lowland poplar plantations with similar conditions to those tested in this study.

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Section: Introductionmentioning

confidence: 99%

Thinning Intensity Affects Soil-Atmosphere Fluxes of Greenhouse Gases and Soil Nitrogen Mineralization in a Lowland Poplar Plantation

Fang

Lin

Tian

et al. 2016

Forests

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“…The interactions among climate, site conditions, and competition can impact the growth of individual trees within a population, and this effect may vary depending on species and size [18]. While climate has a direct influence on tree growth, management practices like nitrogen fertilization, irrigation, logging strategies, and planting density can also interact with climate and further impact tree growth [19]. Therefore, when studying forest growth and related subjects, it is crucial to consider the variations arising from changes in these environmental factors [20].…”

Section: Introductionmentioning

confidence: 99%

Constructing a Model of Poplus spp. Growth Rate Based on the Model Fusion and Analysis of Its Growth Rate Differences and Distribution Characteristics under Different Classes of Environmental Indicators

Zhang,

Liu,

Feng

et al. 2023

Forests

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Poplar (Poplus spp.) is an important forest species widely distributed in China of great significance in identifying factors that clearly influence its growth rate in order to achieve effective control of poplar growth. In this study, we selected 16 factors, including tree size, competition, climate, location, topography, and soil characteristics, to construct linear regression (LR), multilayer perceptron (MLP), k-nearest neighbor regression (KNN), gradient boosting decision tree (GBDT), extreme gradient boosting (XGB), random forest (RF), and deep neural network (DNN) models based on the poplar growth rate. Using model fusion methods, the fitting accuracy and estimation capability were improved. The relative importance of each variable in estimating the poplar growth rate was analyzed using the permutation importance evaluation. The results showed the following: (1) the model fusion approach significantly improved the estimation accuracy of the poplar growth rate model with an R2 of 0.893; (2) the temperature and precipitation exhibited the highest importance in poplar growth; (3) the forest stand density, precipitation, elevation, and temperature had significant variations in growth rates among different-sized poplar trees within different ranges; (4) low-forest stand density, high-precipitation, low-elevation, and high-temperature environments significantly increased the poplar growth rate and had a larger proportion of large-sized individuals with high growth rates. In conclusion, environmental factors significantly influence poplar growth, and corresponding planting and protection measures should be tailored to different growth environments to effectively enhance the growth of poplar plantations.

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Impact of Key Stakeholders’ Participation in Strategic Decision-Making Regarding Poplar Tree Farming Development

Aqgonbad

Zadeh

Hajjarian

et al. 2022

Small-scale Forestry

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Analyzing the impact of climate and management factors on the productivity and soil carbon sequestration of poplar plantations

Cited by 10 publications

References 52 publications

Thinning Intensity Affects Soil-Atmosphere Fluxes of Greenhouse Gases and Soil Nitrogen Mineralization in a Lowland Poplar Plantation

Thinning Intensity Affects Soil-Atmosphere Fluxes of Greenhouse Gases and Soil Nitrogen Mineralization in a Lowland Poplar Plantation

Constructing a Model of Poplus spp. Growth Rate Based on the Model Fusion and Analysis of Its Growth Rate Differences and Distribution Characteristics under Different Classes of Environmental Indicators

Impact of Key Stakeholders’ Participation in Strategic Decision-Making Regarding Poplar Tree Farming Development

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