DOI: 10.1016/j.scitotenv.2019.135416
论文题名: The impacts of degradation, deforestation and restoration on mangrove ecosystem carbon stocks across Cambodia
作者: Sharma S. ; MacKenzie R.A. ; Tieng T. ; Soben K. ; Tulyasuwan N. ; Resanond A. ; Blate G. ; Litton C.M.
刊名: Science of the Total Environment
ISSN: 489697
出版年: 2020
卷: 706 语种: 英语
英文关键词: Blue carbon
; Carbon inventory
; Climate change mitigation
; Gridded sampling
; Rhizophora plantation
Scopus关键词: Carbon
; Climate change
; Deforestation
; Ecosystems
; Land use
; Restoration
; Carbon inventories
; Climate change mitigation
; Land use/ land covers
; Mangrove ecosystems
; National assessment
; Rhizophora plantation
; Selective harvesting
; Spatial variability
; Conservation
; carbon
; carbon emission
; climate change
; deforestation
; degradation
; emission inventory
; forest ecosystem
; mangrove
; restoration ecology
; Article
; Cambodia
; carbon dynamics
; climate change
; deforestation
; ecosystem restoration
; forest management
; land use
; mangrove
; priority journal
; Cambodia
; Rhizophora
; Rhizophoraceae
英文摘要: Mangrove forest conservation can help reduce global C emissions. Despite this benefit to climate change mitigation and adaptation, mangrove forests are being deforested or degraded at an alarming rate, though restoration efforts may offset these losses. The impacts of deforestation to C stocks are relatively intuitive and result in significant decreases in C stocks. It remains unclear how degradation from selective harvesting of trees affects C stocks or how effective restoration efforts are at restoring C stocks. Furthermore, total ecosystem C (TEC) stocks of pristine mangroves can significantly vary spatially. To address these issues, we conducted an intensive, national assessment of mangrove forests across Cambodia using a grid approach to: 1) examine how land use land cover (i.e., pristine, deforested, degraded, and restored forests) impacts TEC stocks, and 2) how TEC stocks vary spatially across the country. TEC stocks from deforested mangroves were always lower than pristine forests, resulting in an overall loss of 60% C (480 Mg C ha−1). However, TEC stocks from degraded and 25-year-old restored mangroves forests did not differ from pristine forests. Mean TEC in mangroves was 784.7 ± 30.1 Mg C ha−1, decreasing from 957.2 ± 32.8 Mg C ha−1 in the northern region to 628.9 ± 33.1 Mg C ha−1 in the central region to 386.2 ± 19.1 Mg C ha−1 in the southern region of Cambodia. Intensive sampling in mangroves across Cambodia verified impacts of deforestation reported elsewhere, revealed the lack of degradation impacts on TEC stocks, and demonstrated the effectiveness of restoration on TEC stocks after only 25 years. Our gridded sampling approach was able to capture spatial variability across Cambodia and provide a more realistic TEC stock information that can be used for national reporting or participation in C markets. © 2019 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158976
Appears in Collections: 气候变化与战略
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作者单位: Department of Natural Resources and Environmental Management, University of Hawaii at Manoa, 1910 East-West Rd., Honolulu, HI, United States; USDA Forest Service, Institute of Pacific Islands Forestry, 60 Nowelo St., Hilo, HI, United States; Asian Institute of Technology, Klong Luang, Pathumthani 12120, Bangkok, Thailand; Royal University of Agriculture, Khan Dangkor, Phnom Penh, Cambodia; USAID LEAD RDMA Program, 87 Wireless Road, Bangkok, Thailand; USAID, 1300 Pennsylvania Ave. NW, Washington, DC, United States
Recommended Citation:
Sharma S.,MacKenzie R.A.,Tieng T.,et al. The impacts of degradation, deforestation and restoration on mangrove ecosystem carbon stocks across Cambodia[J]. Science of the Total Environment,2020-01-01,706