Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14585 |
Elephants limit aboveground carbon gains in African savannas | |
Davies, Andrew B.1,2; Asner, Gregory P.1,2 | |
2019-04-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2019 |
卷号 | 25期号:4页码:1368-1382 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Understanding the drivers of vegetation carbon dynamics is essential for climate change mitigation and effective policy formulation. However, most efforts focus on abiotic drivers of plant biomass change, with little consideration for functional roles performed by animals, particularly at landscape scales. We combined repeat airborne Light Detection and Ranging with measurements of elephant densities, abiotic factors, and exclusion experiments to determine the relative importance of drivers of change in aboveground woody vegetation carbon stocks in Kruger National Park, South Africa. Despite a growing elephant population, aboveground carbon density (ACD) increased across most of the landscape over the 6-year study period, but at fine scales, bull elephant density was the most important factor determining carbon stock change, with ACD losses recorded only where bull densities exceeded 0.5 bulls/km(2). Effects of bull elephants were, however, spatially restricted and landscape dependent, being especially pronounced along rivers, at mid-elevations, and on steeper slopes. In contrast, elephant herds and abiotic drivers had a comparatively small influence on the direction or magnitude of carbon stock change. Our findings demonstrate that animals can have a substantive influence on regional-scale carbon dynamics and warrant consideration in carbon cycling models and policy formulation aimed at carbon management and climate change mitigation. |
英文关键词 | aboveground carbon density carbon cycling Carnegie Airborne Observatory herbivory Kruger National Park LiDAR megaherbivore South Africa woody encroachment |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000461817500014 |
WOS关键词 | KRUGER-NATIONAL-PARK ; WOODY PLANT BIOMASS ; LAND-USE ; ECOSYSTEM RESPONSES ; SEMIARID ECOSYSTEMS ; SEXUAL SEGREGATION ; LOXODONTA-AFRICANA ; FIRE ; ENCROACHMENT ; LANDSCAPE |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
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/17579 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Carnegie Inst Sci, Dept Global Ecol, Stanford, CA USA; 2.Arizona State Univ, Ctr Global Discovery & Conservat Sci, Tempe, AZ 85281 USA |
推荐引用方式 GB/T 7714 | Davies, Andrew B.,Asner, Gregory P.. Elephants limit aboveground carbon gains in African savannas[J]. GLOBAL CHANGE BIOLOGY,2019,25(4):1368-1382. |
APA | Davies, Andrew B.,&Asner, Gregory P..(2019).Elephants limit aboveground carbon gains in African savannas.GLOBAL CHANGE BIOLOGY,25(4),1368-1382. |
MLA | Davies, Andrew B.,et al."Elephants limit aboveground carbon gains in African savannas".GLOBAL CHANGE BIOLOGY 25.4(2019):1368-1382. |
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