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Aboveground carbon stock, allocation and sequestration potential during vegetation recovery in the karst region of southwestern China: A case study at a watershed scale

•Carbon dynamics during vegetation recovery were estimated in the karst region.•Aboveground carbon density of karst forests was low due to harsh habitats.•Carbon density increased during succession due to changes in community structure.•Carbon pool in karst vegetation was determined by a few dominan...

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Published in:Agriculture, ecosystems & environment ecosystems & environment, 2016-11, Vol.235, p.91-100
Main Authors: Liu, Changcheng, Liu, Yuguo, Guo, Ke, Wang, Shijie, Liu, Huiming, Zhao, Haiwei, Qiao, Xianguo, Hou, Dongjie, Li, Shaobin
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container_title Agriculture, ecosystems & environment
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creator Liu, Changcheng
Liu, Yuguo
Guo, Ke
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Liu, Huiming
Zhao, Haiwei
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Hou, Dongjie
Li, Shaobin
description •Carbon dynamics during vegetation recovery were estimated in the karst region.•Aboveground carbon density of karst forests was low due to harsh habitats.•Carbon density increased during succession due to changes in community structure.•Carbon pool in karst vegetation was determined by a few dominant species.•Degraded karst vegetation showed a great carbon sequestration potential. Karst landscape in southwestern China is one of the most typical landscapes developed on carbonate bedrock and has the largest area in the world. Carbon sequestration potentials during secondary karst vegetation recovery remain uncertain. Based on the vegetation map and 87 sampling plots at five stages of natural vegetation succession, this study estimated aboveground (AG) vegetation carbon stocks and dynamics at a watershed scale. AG carbon density of grasslands, shrublands, shrub forests, secondary forests and primary forests was 1.70, 4.15, 22.3, 70.3, 142.2Mgha−1, respectively. The ten most important species stored 71.6–96.1% of total AG carbon stock, indicating that carbon pool in karst vegetation was determined by a few dominant species. Main contributors to AG carbon stock shifted from individuals in small diameter classes in shrublands to individuals in large diameter classes in primary forests, indicating that carbon increases in the early vegetation succession resulted from high recruitment of woody plants, while carbon accumulations in the later forests were mainly due to tree growth. The long time required for secondary forests to recover carbon density to the level of primary forests could be explained by the slow speed of large evergreen trees reaching a high level of dominance during secondary succession on the harsh habitats. The total AG carbon stock of the studied watershed (7.50×103ha) was 85.9×103 Mg, of which paddy fields, dry lands, grasslands, shrublands, shrub forests and secondary forests accounted for 22.6%, 3.49%, 0.34%, 5.97%, 12.3% and 55.3%, respectively. The AG carbon stock in this watershed would increase by 92.5% in 50–100 years and by 4.40 times in 140–200 years if the degraded vegetation types could continue to develop into mature forests. Although carbon density of karst forests was significantly lower than that of the forests on non-karst habitats in the same latitudinal zone, the degraded karst vegetation showed a great carbon sequestration potential due to the large distribution area in southwestern China.
doi_str_mv 10.1016/j.agee.2016.10.003
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Karst landscape in southwestern China is one of the most typical landscapes developed on carbonate bedrock and has the largest area in the world. Carbon sequestration potentials during secondary karst vegetation recovery remain uncertain. Based on the vegetation map and 87 sampling plots at five stages of natural vegetation succession, this study estimated aboveground (AG) vegetation carbon stocks and dynamics at a watershed scale. AG carbon density of grasslands, shrublands, shrub forests, secondary forests and primary forests was 1.70, 4.15, 22.3, 70.3, 142.2Mgha−1, respectively. The ten most important species stored 71.6–96.1% of total AG carbon stock, indicating that carbon pool in karst vegetation was determined by a few dominant species. Main contributors to AG carbon stock shifted from individuals in small diameter classes in shrublands to individuals in large diameter classes in primary forests, indicating that carbon increases in the early vegetation succession resulted from high recruitment of woody plants, while carbon accumulations in the later forests were mainly due to tree growth. The long time required for secondary forests to recover carbon density to the level of primary forests could be explained by the slow speed of large evergreen trees reaching a high level of dominance during secondary succession on the harsh habitats. The total AG carbon stock of the studied watershed (7.50×103ha) was 85.9×103 Mg, of which paddy fields, dry lands, grasslands, shrublands, shrub forests and secondary forests accounted for 22.6%, 3.49%, 0.34%, 5.97%, 12.3% and 55.3%, respectively. The AG carbon stock in this watershed would increase by 92.5% in 50–100 years and by 4.40 times in 140–200 years if the degraded vegetation types could continue to develop into mature forests. Although carbon density of karst forests was significantly lower than that of the forests on non-karst habitats in the same latitudinal zone, the degraded karst vegetation showed a great carbon sequestration potential due to the large distribution area in southwestern China.</description><identifier>ISSN: 0167-8809</identifier><identifier>EISSN: 1873-2305</identifier><identifier>DOI: 10.1016/j.agee.2016.10.003</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Aboveground carbon density ; Bedrock ; Carbon ; Carbon sequestration ; Carbon sequestration potential ; Case studies ; Density ; Dominant species ; Ecological succession ; Evergreen trees ; Forest management ; Forests ; Grasslands ; Karst ; Karst ecosystem ; Landscape ; Natural vegetation ; Plants (botany) ; Recovering ; Recruitment ; Rocks ; Secondary vegetation succession ; Species composition ; Studies ; Vegetation ; Vegetation mapping ; Watersheds ; Woody plants</subject><ispartof>Agriculture, ecosystems &amp; environment, 2016-11, Vol.235, p.91-100</ispartof><rights>2016 Elsevier B.V.</rights><rights>Copyright Elsevier BV Nov 1, 2016</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c361t-cb8096b5a238cc3309057babadf51e5168083acf16e432d1040cd798e07110003</citedby><cites>FETCH-LOGICAL-c361t-cb8096b5a238cc3309057babadf51e5168083acf16e432d1040cd798e07110003</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Liu, Changcheng</creatorcontrib><creatorcontrib>Liu, Yuguo</creatorcontrib><creatorcontrib>Guo, Ke</creatorcontrib><creatorcontrib>Wang, Shijie</creatorcontrib><creatorcontrib>Liu, Huiming</creatorcontrib><creatorcontrib>Zhao, Haiwei</creatorcontrib><creatorcontrib>Qiao, Xianguo</creatorcontrib><creatorcontrib>Hou, Dongjie</creatorcontrib><creatorcontrib>Li, Shaobin</creatorcontrib><title>Aboveground carbon stock, allocation and sequestration potential during vegetation recovery in the karst region of southwestern China: A case study at a watershed scale</title><title>Agriculture, ecosystems &amp; environment</title><description>•Carbon dynamics during vegetation recovery were estimated in the karst region.•Aboveground carbon density of karst forests was low due to harsh habitats.•Carbon density increased during succession due to changes in community structure.•Carbon pool in karst vegetation was determined by a few dominant species.•Degraded karst vegetation showed a great carbon sequestration potential. Karst landscape in southwestern China is one of the most typical landscapes developed on carbonate bedrock and has the largest area in the world. Carbon sequestration potentials during secondary karst vegetation recovery remain uncertain. Based on the vegetation map and 87 sampling plots at five stages of natural vegetation succession, this study estimated aboveground (AG) vegetation carbon stocks and dynamics at a watershed scale. AG carbon density of grasslands, shrublands, shrub forests, secondary forests and primary forests was 1.70, 4.15, 22.3, 70.3, 142.2Mgha−1, respectively. The ten most important species stored 71.6–96.1% of total AG carbon stock, indicating that carbon pool in karst vegetation was determined by a few dominant species. Main contributors to AG carbon stock shifted from individuals in small diameter classes in shrublands to individuals in large diameter classes in primary forests, indicating that carbon increases in the early vegetation succession resulted from high recruitment of woody plants, while carbon accumulations in the later forests were mainly due to tree growth. The long time required for secondary forests to recover carbon density to the level of primary forests could be explained by the slow speed of large evergreen trees reaching a high level of dominance during secondary succession on the harsh habitats. The total AG carbon stock of the studied watershed (7.50×103ha) was 85.9×103 Mg, of which paddy fields, dry lands, grasslands, shrublands, shrub forests and secondary forests accounted for 22.6%, 3.49%, 0.34%, 5.97%, 12.3% and 55.3%, respectively. The AG carbon stock in this watershed would increase by 92.5% in 50–100 years and by 4.40 times in 140–200 years if the degraded vegetation types could continue to develop into mature forests. 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Liu, Yuguo ; Guo, Ke ; Wang, Shijie ; Liu, Huiming ; Zhao, Haiwei ; Qiao, Xianguo ; Hou, Dongjie ; Li, Shaobin</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c361t-cb8096b5a238cc3309057babadf51e5168083acf16e432d1040cd798e07110003</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Aboveground carbon density</topic><topic>Bedrock</topic><topic>Carbon</topic><topic>Carbon sequestration</topic><topic>Carbon sequestration potential</topic><topic>Case studies</topic><topic>Density</topic><topic>Dominant species</topic><topic>Ecological succession</topic><topic>Evergreen trees</topic><topic>Forest management</topic><topic>Forests</topic><topic>Grasslands</topic><topic>Karst</topic><topic>Karst ecosystem</topic><topic>Landscape</topic><topic>Natural vegetation</topic><topic>Plants (botany)</topic><topic>Recovering</topic><topic>Recruitment</topic><topic>Rocks</topic><topic>Secondary vegetation succession</topic><topic>Species composition</topic><topic>Studies</topic><topic>Vegetation</topic><topic>Vegetation mapping</topic><topic>Watersheds</topic><topic>Woody plants</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liu, Changcheng</creatorcontrib><creatorcontrib>Liu, Yuguo</creatorcontrib><creatorcontrib>Guo, Ke</creatorcontrib><creatorcontrib>Wang, Shijie</creatorcontrib><creatorcontrib>Liu, Huiming</creatorcontrib><creatorcontrib>Zhao, Haiwei</creatorcontrib><creatorcontrib>Qiao, Xianguo</creatorcontrib><creatorcontrib>Hou, Dongjie</creatorcontrib><creatorcontrib>Li, Shaobin</creatorcontrib><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><jtitle>Agriculture, ecosystems &amp; 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Karst landscape in southwestern China is one of the most typical landscapes developed on carbonate bedrock and has the largest area in the world. Carbon sequestration potentials during secondary karst vegetation recovery remain uncertain. Based on the vegetation map and 87 sampling plots at five stages of natural vegetation succession, this study estimated aboveground (AG) vegetation carbon stocks and dynamics at a watershed scale. AG carbon density of grasslands, shrublands, shrub forests, secondary forests and primary forests was 1.70, 4.15, 22.3, 70.3, 142.2Mgha−1, respectively. The ten most important species stored 71.6–96.1% of total AG carbon stock, indicating that carbon pool in karst vegetation was determined by a few dominant species. Main contributors to AG carbon stock shifted from individuals in small diameter classes in shrublands to individuals in large diameter classes in primary forests, indicating that carbon increases in the early vegetation succession resulted from high recruitment of woody plants, while carbon accumulations in the later forests were mainly due to tree growth. The long time required for secondary forests to recover carbon density to the level of primary forests could be explained by the slow speed of large evergreen trees reaching a high level of dominance during secondary succession on the harsh habitats. The total AG carbon stock of the studied watershed (7.50×103ha) was 85.9×103 Mg, of which paddy fields, dry lands, grasslands, shrublands, shrub forests and secondary forests accounted for 22.6%, 3.49%, 0.34%, 5.97%, 12.3% and 55.3%, respectively. The AG carbon stock in this watershed would increase by 92.5% in 50–100 years and by 4.40 times in 140–200 years if the degraded vegetation types could continue to develop into mature forests. Although carbon density of karst forests was significantly lower than that of the forests on non-karst habitats in the same latitudinal zone, the degraded karst vegetation showed a great carbon sequestration potential due to the large distribution area in southwestern China.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.agee.2016.10.003</doi><tpages>10</tpages></addata></record>
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ispartof Agriculture, ecosystems & environment, 2016-11, Vol.235, p.91-100
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source ScienceDirect Freedom Collection
subjects Aboveground carbon density
Bedrock
Carbon
Carbon sequestration
Carbon sequestration potential
Case studies
Density
Dominant species
Ecological succession
Evergreen trees
Forest management
Forests
Grasslands
Karst
Karst ecosystem
Landscape
Natural vegetation
Plants (botany)
Recovering
Recruitment
Rocks
Secondary vegetation succession
Species composition
Studies
Vegetation
Vegetation mapping
Watersheds
Woody plants
title Aboveground carbon stock, allocation and sequestration potential during vegetation recovery in the karst region of southwestern China: A case study at a watershed scale
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