Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/ab5f49 |
Multi-decadal patterns of vegetation succession after tundra fire on the Yukon-Kuskokwim Delta, Alaska | |
Frost, Gerald, V1; Loehman, Rachel A.2; Saperstein, Lisa B.3; Macander, Matthew J.1; Nelson, Peter R.4; Paradis, David P.4; Natali, Susan M.5 | |
2020-02-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2020 |
卷号 | 15期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Alaska's Yukon-Kuskokwim Delta (YKD) is one of the warmest parts of the Arctic tundra biome and tundra fires are common in its upland areas. Here, we combine field measurements, Landsat observations, and quantitative cover maps for tundra plant functional types (PFTs) to characterize multi-decadal succession and landscape change after fire in lichen-dominated upland tundra of the YKD, where extensive wildfires occurred in 1971-1972, 1985, 2006-2007, and 2015. Unburned tundra was characterized by abundant lichens, and low lichen cover was consistently associated with historical fire. While we observed some successional patterns that were consistent with earlier work in Alaskan tussock tundra, other patterns were not. In the landscape we studied, a large proportion of pre-fire moss cover and surface peat tended to survive fire, which favors survival of existing vascular plants and limits opportunities for seed recruitment. Although shrub cover was much higher in 1985 and 1971-1972 burns than in unburned tundra, tall shrubs (>0.5 m height) were rare and the PFT maps indicate high landscape-scale variability in the degree and persistence of shrub increase after fire. Fire has induced persistent changes in species composition and structure of upland tundra on the YKD, but the lichen-dominated fuels and thick surface peat appear to have limited the potential for severe fire and accompanying edaphic changes. Soil thaw depths were about 10 cm deeper in 2006-2007 burns than in unburned tundra, but were similar to unburned tundra in 1985 and 1971-1972 burns. Historically, repeat fire has been rare on the YKD, and the functional diversity of vegetation has recovered within several decades post-fire. Our findings provide a basis for predicting and monitoring post-fire tundra succession on the YKD and elsewhere. |
英文关键词 | wildfire Arctic tundra vegetation succession disturbance permafrost plant functional types Yukon-Kuskokwim Delta |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000520980900001 |
WOS关键词 | SEWARD PENINSULA ; TUSSOCK TUNDRA ; ARCTIC TUNDRA ; PLANT-COMMUNITIES ; PERMAFROST THAW ; DISTURBANCE ; RECOVERY ; TEMPERATURE ; DIVERSITY ; DYNAMICS |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/279184 |
专题 | 气候变化 |
作者单位 | 1.ABR Inc, Environm Res & Serv, Fairbanks, AK 99709 USA; 2.US Geol Survey, Alaska Sci Ctr, Anchorage, AK USA; 3.US Fish & Wildlife Serv, Alaska Reg Off, Anchorage, AK USA; 4.Univ Maine, Ft Kent, ME USA; 5.Woods Hole Res Ctr, Falmouth, MA USA |
推荐引用方式 GB/T 7714 | Frost, Gerald, V,Loehman, Rachel A.,Saperstein, Lisa B.,et al. Multi-decadal patterns of vegetation succession after tundra fire on the Yukon-Kuskokwim Delta, Alaska[J]. ENVIRONMENTAL RESEARCH LETTERS,2020,15(2). |
APA | Frost, Gerald, V.,Loehman, Rachel A..,Saperstein, Lisa B..,Macander, Matthew J..,Nelson, Peter R..,...&Natali, Susan M..(2020).Multi-decadal patterns of vegetation succession after tundra fire on the Yukon-Kuskokwim Delta, Alaska.ENVIRONMENTAL RESEARCH LETTERS,15(2). |
MLA | Frost, Gerald, V,et al."Multi-decadal patterns of vegetation succession after tundra fire on the Yukon-Kuskokwim Delta, Alaska".ENVIRONMENTAL RESEARCH LETTERS 15.2(2020). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论