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  1. Article: [Height to diameter ratio model of

    Shao, Weiwei / Dong, Lingbo

    Ying yong sheng tai xue bao = The journal of applied ecology

    2023  Volume 34, Issue 2, Page(s) 342–348

    Abstract: Based on data from 56 plots of ... ...

    Title translation 大兴安岭地区兴安落叶松的高径比模型.
    Abstract Based on data from 56 plots of natural
    MeSH term(s) Larix ; Forests ; Trees ; China
    Language Chinese
    Publishing date 2023-02-21
    Publishing country China
    Document type English Abstract ; Journal Article
    ZDB-ID 2881809-X
    ISSN 1001-9332
    ISSN 1001-9332
    DOI 10.13287/j.1001-9332.202302.005
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Long-term vegetation restoration promotes lignin phenol preservation and microbial anabolism in forest plantations: Implications for soil organic carbon dynamics.

    Li, Jiajia / Dong, Lingbo / Fan, Miaochun / Shangguan, Zhouping

    The Science of the total environment

    2024  Volume 928, Page(s) 172635

    Abstract: Vegetation restoration contributes to soil organic carbon (C; SOC) sequestration through the accumulation of plant and microbial residues, but the mechanisms underlying this microbially mediated process are not well resolved. To depict the dynamics of ... ...

    Abstract Vegetation restoration contributes to soil organic carbon (C; SOC) sequestration through the accumulation of plant and microbial residues, but the mechanisms underlying this microbially mediated process are not well resolved. To depict the dynamics of plant- and microbial-derived C in restored forest ecosystems, soil samples were collected from Robinia pseudoacacia plantations of different stand ages (15, 25, 35, 45 years old) established on degraded wheat fields. The results showed that the degree of lignin phenol oxidation decreased with increasing stand age (P < 0.05), and hemicellulose-degrading genes were detected at higher relative abundances than other functional gene categories, indicating selective preservation of recalcitrant lignin phenols. Despite both glucosamine (R
    MeSH term(s) Lignin ; Forests ; Soil/chemistry ; Soil Microbiology ; Carbon ; Environmental Restoration and Remediation/methods ; Phenols/analysis ; Robinia
    Chemical Substances Lignin (9005-53-2) ; Soil ; Carbon (7440-44-0) ; Phenols
    Language English
    Publishing date 2024-04-21
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2024.172635
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Appropriate N addition improves soil aggregate stability through AMF and glomalin‐related soil proteins in a semiarid agroecosystem

    Zhang, Yu / Dong, Lingbo / Shangguan, Zhouping

    Land Degradation & Development. 2023 Feb. 15, v. 34, no. 3 p.710-722

    2023  

    Abstract: Soil aggregation and structural stability play a crucial role in soil organic carbon (SOC) sequestration. However, the underlying mechanisms of arbuscular mycorrhizal fungi (AMF) and glomalin‐related soil protein (GRSP) responses to N addition and their ... ...

    Abstract Soil aggregation and structural stability play a crucial role in soil organic carbon (SOC) sequestration. However, the underlying mechanisms of arbuscular mycorrhizal fungi (AMF) and glomalin‐related soil protein (GRSP) responses to N addition and their impacts on soil aggregation and organic carbon stability remain unclear. Hence, a 16‐year field N addition experiment on winter wheat (Triticum aestivum L.) was conducted to investigate the effects on the stability of soil structure and SOC fractions via AMF and GRSP. Overall, N addition increased the soil aggregate mean weight diameter (MWD), which exhibited an increase in the proportion of large macroaggregates and a decrease in the proportion of silt‐clay fractions. Appropriate N (180 kg N ha⁻¹) input increased SOC stability and total SOC stock, while excessive N (360 kg N ha⁻¹) input increased labile organic carbon fractions, and active C index and decreased the C stock. The concentrations of SOC, total GRSP (T‐GRSP), and easily extractable GRSP (EE‐GRSP) showed the largest increases in small macroaggregates, and GRSP was significantly correlated with SOC, recalcitrant organic carbon, and MWD (p < 0.05). These results indicated that appropriate N addition promoted AMF to secrete GRSP, which in turn favoured large macroaggregation and enhanced the physical protection of SOC. Meanwhile, the increased GRSP stimulated the accumulation of recalcitrant C, thus improving soil organic carbon stability and carbon sequestration capacity. The study suggested that appropriate N addition (180 kg N ha⁻¹) should be used to improve the carbon sequestration potential of farmland on the Loess Plateau.
    Keywords Triticum aestivum ; aggregate stability ; agricultural land ; agroecosystems ; carbon sequestration ; labile carbon ; land degradation ; soil aggregates ; soil aggregation ; soil structure ; vesicular arbuscular mycorrhizae ; winter wheat ; China
    Language English
    Dates of publication 2023-0215
    Size p. 710-722.
    Publishing place John Wiley & Sons, Ltd.
    Document type Article ; Online
    Note JOURNAL ARTICLE
    ZDB-ID 1319202-4
    ISSN 1085-3278
    ISSN 1085-3278
    DOI 10.1002/ldr.4488
    Database NAL-Catalogue (AGRICOLA)

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  4. Article: Height-diameter models of regenerated saplings of

    Lyu, Le-le / Wang, Wen-Bin / Dong, Ling-Bo

    Ying yong sheng tai xue bao = The journal of applied ecology

    2023  Volume 34, Issue 9, Page(s) 2355–2362

    Abstract: Based on data collected from 2054 saplings ... ...

    Title translation 基于哑变量和分位数回归的兴安落叶松更新幼树的树高-胸径模型.
    Abstract Based on data collected from 2054 saplings of
    MeSH term(s) Larix ; Forests ; Trees ; Forestry ; China
    Language English
    Publishing date 2023-10-29
    Publishing country China
    Document type Journal Article
    ZDB-ID 2881809-X
    ISSN 1001-9332
    ISSN 1001-9332
    DOI 10.13287/j.1001-9332.202309.005
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: The contributions of stand characteristics on carbon sequestration potential are triple that of climate variables for Larix spp. plantations in northeast China.

    Dong, Lingbo / Lin, Xueying / Bettinger, Pete / Liu, Zhaogang

    The Science of the total environment

    2023  Volume 911, Page(s) 168726

    Abstract: Planted forests play a crucial role in addressing global climate change and are also valued globally for their numerous ecosystem services. Therefore, it is essential to understand how biotic and abiotic factors affect the carbon sequestration potential. ...

    Abstract Planted forests play a crucial role in addressing global climate change and are also valued globally for their numerous ecosystem services. Therefore, it is essential to understand how biotic and abiotic factors affect the carbon sequestration potential. This study focuses on quantifying the effects of 26 different variables on the carbon sequestration potential of Larix spp. plantations in northeast China, utilizing the random forest algorithm (RF). To eliminate the age-related tendency of stand carbon stock, a novel carbon sequestration index (CSI) was defined, which measures the ratio of actual to predicted stand carbon stocks for a stand at a specific age. The results indicated that the developed RF model explained approximately 64.75 % of the variations of CSI. Among the four categories of variables analyzed, stand variables (35.73 %) contributed significantly more than terrain variables (3.31 %), soil variables (3.68 %), and climate variables (9.06 %). The partial dependence analysis revealed that the Larix spp. plantations had a potential maximum carbon stock of approximately 73.34 t·ha
    MeSH term(s) Ecosystem ; Larix ; Carbon Sequestration ; Soil ; China ; Carbon/analysis ; Biomass
    Chemical Substances Soil ; Carbon (7440-44-0)
    Language English
    Publishing date 2023-11-23
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2023.168726
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Optimizing neighborhood-based stand spatial structure: Four cases of boreal forests

    Dong, Lingbo / Bettinger, Pete / Liu, Zhaogang

    Elsevier B.V. Forest ecology and management. 2022 Feb. 15, v. 506

    2022  

    Abstract: Over the past fifty years, societies have placed increasing demands on forests, and their use has shifted gradually from wood production to the diversified benefits and functions of ecosystem services. The effects of neighborhood-based structural ... ...

    Abstract Over the past fifty years, societies have placed increasing demands on forests, and their use has shifted gradually from wood production to the diversified benefits and functions of ecosystem services. The effects of neighborhood-based structural characteristics on regulating growth and promoting sustainability have therefore drawn much attention. However, direction for managing natural mixed forests using neighborhood-based indexes are still not clear. Thus, a tree-level harvest planning tool that considers four neighborhood-based structural indexes (species mingling, diametric differentiation, horizontal spatial pattern and crowdedness of trees) while concurrently recognizing other operational constraints, was developed using simulated annealing algorithm. The approach was applied to four 1-ha mapped stands in northeast China, namely a natural larch forest (NLF), a natural birch forest (NBF), a natural secondary forest (SEF), and a Korean pine broad-leaved forest (KBF). The results indicated that the tree-level harvest optimization tool improved the objective function values by approximately 78.33% of NLF, and 134.96% of NBF, and 156.70% of SEF and 252.95%, respectively. The optimal harvest intensities for partial cutting activities varied from 22.16% (SEF) to 26.07% (NBF) of the standing volume. In evaluating the four neighborhood-based structural indexes, both species mingling and crowdedness have the highest priority to be adjusted in structure-based forest management. Our results demonstrated that that the commonly used neighborhood-based structural indexes could be employed to control the spatial layout of potential harvest trees, in turn may be conducive to regulate the growth and stability of forests.
    Keywords Betula ; Larix ; Pinus koraiensis ; algorithms ; deciduous forests ; ecosystems ; forest ecology ; forest management ; secondary forests ; wood ; China
    Language English
    Dates of publication 2022-0215
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 751138-3
    ISSN 0378-1127
    ISSN 0378-1127
    DOI 10.1016/j.foreco.2021.119965
    Database NAL-Catalogue (AGRICOLA)

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  7. Article: Factors driving native tree species restoration in plantations and tree structure conversion in Chinese temperate forests

    Wang, Tao / Dong, Lingbo / Liu, Zhaogang

    Forest ecology and management. 2022 Mar. 01, v. 507

    2022  

    Abstract: Forests have been planted over large areas during forest restoration programs in Northeast China. An important challenge is transforming forest species structure by allowing colonization of native species in plantations, especially under the present ... ...

    Abstract Forests have been planted over large areas during forest restoration programs in Northeast China. An important challenge is transforming forest species structure by allowing colonization of native species in plantations, especially under the present policy of limited logging intensity and near-natural management practices. However, research on the entire process of native tree species restoration and conversion of tree species structure over time remains limited. Therefore, a multi-year field study was conducted to document native tree species restoration in plantations and different open land-cover types in Chinese temperate forests. We evaluated native tree species restoration in plantations (n = 30) and different types of natural recovery in open areas (n = 50) as controls. The first survey was conducted in 1990, with plots sampled in plantations of age 4–30 years, and repeat surveys were conducted in 1993, 2004, and 2016. We compared the importance of abiotic and biotic factors in the different survey periods using the Random Forest algorithm for restoration outcome (i.e., presence of ‘large trees’ (DBH ≥ 5 cm) of natural tree species in plantations) and the changes in plantation tree species composition during the survey periods. The aim was to test our hypothesis that abiotic and biotic factors, such as topography, habitat, and distance from nearest forest (i.e., seed source), differ in importance under different restoration periods. The results revealed that the basal area of large trees was the most important variable for native tree species restoration in plantations over the entire survey period. Abiotic factors, such as elevation and slope, differed in importance and relevance in the different recovery periods to the restoration outcomes in plantations and open areas. Increase in distance from seed source had a negative effect on natural tree species restoration in plantations and different types of open areas. Although the correlation of distance from seed source to restoration outcomes is consistent during the entire survey period, the importance of distance from seed source varied along a chronosequence. Different forest management measures require implementation. As succession progressed, the dominance of planted tree species in plantations gradually decreased. Compared with passive natural recovery, active planting of seedlings in open land not only promotes the restoration of coniferous species that no longer exist in an area owing to excessive logging, but also promotes the restoration of other native tree species.
    Keywords administrative management ; algorithms ; chronosequences ; forest ecology ; forest management ; forest restoration ; habitats ; indigenous species ; issues and policy ; land cover ; species diversity ; surveys ; topography ; trees ; China
    Language English
    Dates of publication 2022-0301
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 751138-3
    ISSN 0378-1127
    ISSN 0378-1127
    DOI 10.1016/j.foreco.2021.119989
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  8. Article: Optimizing rotation lengths for maximizing carbon balance of larch plantations in northeast China

    Dong, Lingbo / Bettinger, Pete / Qin, Huiyan / Liu, Zhaogang

    Elsevier Ltd Journal of cleaner production. 2022 Apr. 01, v. 343

    2022  

    Abstract: Achieving the carbon neutral targets before year 2060 is one of the important commitments for mitigating global climate change by Chinese government. However, the manner in which one would maximize the carbon sequestration of the planted forests is still ...

    Abstract Achieving the carbon neutral targets before year 2060 is one of the important commitments for mitigating global climate change by Chinese government. However, the manner in which one would maximize the carbon sequestration of the planted forests is still unclear. Estimating accurately the carbon balance in forestry depends highly on the dynamics of numerous delay-released carbon pools (e.g., harvest residues, wood products), thus the strategies used to account for the carbon emissions of these components may have great influences on the decision-making and profitability associated with planted forests. This study developed a tool that allows forest managers and policy makers to analyze the effects of alternative accounting strategies for recognizing carbon emissions on the optimal rotation lengths and profitability of planted forests. The considered carbon balance not only refers to the within-forest pools, e.g., living biomass, harvest residues, annually generated litters and dead trees, but also refers to the outside-forest pools that include wood products, biofuel, operating process and substitution effect. The obtained results indicated that the lengths of optimal forest rotation decreased significantly with increases in site index, planting density and discount rate, while they increased dramatically with increases of carbon price. The gaps in rotation lengths were as large as 13.5 years, 6.9 years, 27.6 years and 11.0 years, respectively for the ranges of site index (10–18 m), planting density (2500–4444 trees per hectare), discount rate (1%–5%), and carbon prices (0–880 CNY/ton CO₂) assumed. The effects of delay-released carbon pools on the optimal rotation lengths were not significant, when the substitution effects of wood products and biofuels were considered under the current carbon trading markets; however, some exceptions were observed when a very high carbon price (880 CNY/ton CO₂) was assumed.
    Keywords Larix ; biofuels ; biomass ; carbon ; carbon dioxide ; carbon markets ; carbon sequestration ; climate change ; decision making ; discount rate ; forests ; issues and policy ; profitability ; site index ; wood ; China
    Language English
    Dates of publication 2022-0401
    Publishing place Elsevier Ltd
    Document type Article
    ISSN 0959-6526
    DOI 10.1016/j.jclepro.2022.131025
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  9. Article: Compatibility predictive model for regeneration quantities of

    Xiao, Chen / Tian, Dong-Yuan / Ma, Rong / Dong, Ling-Bo

    Ying yong sheng tai xue bao = The journal of applied ecology

    2023  Volume 34, Issue 9, Page(s) 2345–2354

    Abstract: The natural regeneration grade is an important foundation for formulating forest management measures. Traditional studies have only considered the regeneration quantities predictive model of the total stand or dominant tree species, but the consistency ... ...

    Title translation 兴安落叶松天然林更新数量相容性预测模型.
    Abstract The natural regeneration grade is an important foundation for formulating forest management measures. Traditional studies have only considered the regeneration quantities predictive model of the total stand or dominant tree species, but the consistency among the prediction results of different tree species and the total regeneration quantities of stand is not solved. That is, the regeneration prediction results at the stand level are not equal to the sum of the predicted results of all tree species. To address this, on the basis of the traditional counting model, we attempted to construct a compatibility predictive model for regeneration quantities of different tree species within the stand, which would provide a theoretical basis for the rational management and decision-making of natural forest. Based on the survey data from 96 standard plots of Cuigang Forest Farm, Xinlin Forest Farm, and Zhuangzhi Forest Farm in Daxing'an Mountains, we selected 30 basic indices from five aspects of site factor, soil factor, stand factor, tree diversity and stand spatial structure, and used Poisson model and negative binomial model as the basic models to construct the regeneration prediction models of
    MeSH term(s) Larix ; Forests ; Betula ; Trees ; China
    Language English
    Publishing date 2023-10-29
    Publishing country China
    Document type Journal Article
    ZDB-ID 2881809-X
    ISSN 1001-9332
    ISSN 1001-9332
    DOI 10.13287/j.1001-9332.202309.001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Estimating the optimal internal carbon prices for balancing forest wood production and carbon sequestration: The case of northeast China

    Dong, Lingbo / Bettinger, Pete / Liu, Zhaogang

    Journal of cleaner production. 2021 Jan. 25, v. 281

    2021  

    Abstract: The mechanisms of carbon trading and taxes are two of the most important routes the forest sector might follow to mitigate global climate change. However, the carbon price that best suits a carbon forestry management perspective is still a critical issue ...

    Abstract The mechanisms of carbon trading and taxes are two of the most important routes the forest sector might follow to mitigate global climate change. However, the carbon price that best suits a carbon forestry management perspective is still a critical issue in practice. The present study advances an effective method to estimate the optimal internal carbon price, based on a fitted logistic regression of amount of carbon sequestered on carbon price. The inflection point of the fitted curve was treated as the optimal internal carbon price, and the corresponding slope at the inflection point was further considered to be the maximum potential carbon sequestration rate. The novel method was applied to three increasingly difficult forest planning problems, in which the constraints regarding the harvest flow of timber and maximum opening areas were all included. The effects of different time horizons and discount rates on the estimated optimal internal carbon prices were also evaluated for the three planning formulations. The results indicate that the logistic function was able to describe the relationship between carbon price and carbon sequestration under each planning scenario very well, with coefficient of determination values all as large as 0.97. The estimated optimal internal carbon prices varied from US$ 114.84 to US$ 367.41 per ton, decreased slightly with increasing discount rates and the complexities of planning problems, and increased dramatically with increasing time horizons. The corresponding marginal benefits of price on carbon sequestration ranged from 2.4845 to 10.5783 thousand tons per US dollar, where significant declining trends were observed with increases in the time horizons, discount rates, and complexities of planning problems. The economic benefits of net carbon sequestration accounted for approximately 54.03%–61.34% of total benefits when estimated optimal internal carbon prices were employed.
    Keywords carbon ; carbon markets ; carbon sequestration ; climate change ; discount rate ; flow ; forest industries ; forest management ; forests ; methodology ; planning ; prices ; regression analysis ; taxes ; wood ; China
    Language English
    Dates of publication 2021-0125
    Publishing place Elsevier Ltd
    Document type Article
    Note NAL-light
    ISSN 0959-6526
    DOI 10.1016/j.jclepro.2020.125342
    Database NAL-Catalogue (AGRICOLA)

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