Effects of tree size heterogeneity on carbon sink in old forests

Shu, Shumiao; Zhu, Wenyue; Wang, Wenzhi; Jia, Min; Zhang, Yuanyuan; Sheng, Zheng

doi:10.1016/j.foreco.2018.09.023

Cited by 17 publications

(16 citation statements)

References 45 publications

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“…The C sink values found in the in situ detailed assessment were consistent with the results obtained in previous studies that use models based on allometric equations to calculate plant biomass, on annual plant growth rates of the species, or even gas interchange to estimate the annual rates of sequestration and carbon storage [21,27,28,[41][42][43][44][45]. This sink ability of naturally vegetated areas used for grazing has been shown to be mainly supported by woody vegetation, where shrublands have played a relevant role in parallel to forests.…”

Section: Methodological Advances In Estimating the C Sink Capacity Of Pastoral Livestock And Its Incorporation Into The Calculation Of Thsupporting

confidence: 88%

Natural Carbon Sinks Linked to Pastoral Activity in S Spain: A Territorial Evaluation Methodology for Mediterranean Goat Grazing Systems

et al. 2021

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Exploring and developing new tools for the accounting and management of natural C sinks will provide a closer, more accurate option to remark the importance of such sinks in relation to livestock production, helping to support the persistence of some seriously endangered traditional, environmentally sustainable livestock farming. Following both precision and usability criteria, two main C sink databases covering the Andalusian region (S Spain) were developed from the Spanish Land Parcel Identification System (SIGPAC, coarse resolution) and the Spanish Information System on Land Cover (SIOSE, finer resolution) land use classes. Particular C sink factors based on growth rates for individual plant species were associated with detailed vegetation maps and, further, were linked to Land Use and Covers cartography across the region. In addition, eight ruminant farms were exhaustively studied in situ and used as a control. Results were compared with the obtained through the application of the developed C sink databases, and with the commonly used Petersen methodology. The sink capacity of vegetation associated with farms varied from 0.25 to 1.37 t CO2 ha−1 year−1, depending on the plant species composition and abundance. All the approaches showed significant differences from the control. C sink values were significantly higher when applying SIGPAC-based C sink database to farms, while values from the SIOSE and Petersen methodology approaches provided more moderate values, closer to the control. SIGPAC and Petersen approaches showed higher usability but presented lower precision due to a poor definition of plant cover. SIOSE-based C sink database provided suitable values able to be adapted to reality and used by farmers. In this regard, further research efforts to improve the adjustment of results and ease of use are required. The present approach means a methodological advance in the estimation of the C sink capacity associated with pastoral livestock farms, able to be incorporated into the CF calculation in contrasted areas worldwide, in the frame of the ‘eco-schemes’ being recently under development through the EU CAP.

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Section: Methodological Advances In Estimating the C Sink Capacity Of Pastoral Livestock And Its Incorporation Into The Calculation Of Thsupporting

confidence: 88%

Natural Carbon Sinks Linked to Pastoral Activity in S Spain: A Territorial Evaluation Methodology for Mediterranean Goat Grazing Systems

et al. 2021

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“…Forests are vulnerable to various natural disasters and human activities. The deterioration of soil and climatic conditions, aging of trees, and improper logging can cause great damage to forest growth [13][14][15][16][17][18][19][20], which affects carbon sequestration in forests and reduces the output of forestry carbon sinks. As one of the important measures to enhance the risk resistance ability of forestry, forest insurance can ensure the rapid recovery of forestry production and operation after the disaster, reduce the risk of forestry investment and financing, and promote the sustainable operation of forestry.…”

Section: Introductionmentioning

confidence: 99%

Strategies of Forestry Carbon Sink under Forest Insurance and Subsidies

Song

Peng

2019

Sustainability

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We take the forest insurance supply chain, composed of a forestry enterprise and an insurance company, as the research object. The forestry carbon sink, operated by the forestry enterprise, is the subject matter of insurance. The Stackelberg game model is constructed to study the optimal strategies of the forestry enterprise and insurance company under the forest insurance mechanism, as well as the impact of government subsidies, probability of deforestation, and carbon limit level on the decision-making and profit of the forestry enterprise and insurance company. The results show that the larger the carbon limit, the looser carbon restraint policy, which causes the forestry enterprise to reduce the scale of carbon sink forest, and the insurance company lowers the premium level. As the probability of deforestation increases, both the scale of the carbon sink forest and the premium level will decrease. Direct subsidies for the premiums of the forestry enterprise are conducive to expanding the scale of carbon sink forest, but will lead to the insurance company improving the premium level. Providing indirect subsidies to the insurance company’s operating costs will not only expand the scale of the carbon sink forest, but also lower the premium level. In the case of the same number of premium subsidies, indirect subsidies are more effective than direct subsidies in increasing the forestry enterprise’s income and promoting it to expand the forest scale.

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“…However, it has then been inferred here that this reflects a tendency at any one site for GPP to be unaffected by age and for NPP to decline. (Shu et al 2019). There was no evidence of a trend with age of GPP in any of these data sets; the solid line indicates their overall mean GPP.…”

Section: Forest Agementioning

confidence: 84%

Do increasing respiratory costs explain the decline with age of forest growth rate?

West

2019

J. For. Res.

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increase progressively in, any or all of, the construction and maintenance of more complex tissues, the maintenance of increasing amounts of live tissue within the sapwood of stems and coarse roots, the conversion of sapwood to heartwood, the increasing distance of phloem transport, increased turnover rates of fine roots, cost of supporting very tall trees that are unable to compensate fully for increased water stress in their canopies or maintaining alive competitively unsuccessful small trees.

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Effects of tree size heterogeneity on carbon sink in old forests

Cited by 17 publications

References 45 publications

Natural Carbon Sinks Linked to Pastoral Activity in S Spain: A Territorial Evaluation Methodology for Mediterranean Goat Grazing Systems

Natural Carbon Sinks Linked to Pastoral Activity in S Spain: A Territorial Evaluation Methodology for Mediterranean Goat Grazing Systems

Strategies of Forestry Carbon Sink under Forest Insurance and Subsidies

Do increasing respiratory costs explain the decline with age of forest growth rate?

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