Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.2989/10220119.2020.1723696 |
| Locally high, but regionally low: the impact of the 2014-2016 drought on the trees of semi-arid savannas, South Africa | |
| Swemmer, A. M. | |
| 通讯作者 | Swemmer, A. M. |
| 来源期刊 | AFRICAN JOURNAL OF RANGE & FORAGE SCIENCE
 |
| ISSN | 1022-0119 |
| EISSN | 1727-9380 |
| 出版年 | 2020 |
| 卷号 | 37期号:1页码:31-42 |
| 英文摘要 | Drought is thought to be a factor limiting the abundance of shrubs and trees in savannas, but this has rarely been tested empirically. The severe drought of 2014-2016 provided an opportunity to document the impact of drought on the mortality of woody plants in semi-arid savannas of South Africa. Annual data from long-term tree monitoring plots were combined with opportunistic sampling in areas of high mortality to determine the extent and severity of mortality across an area of approximately 10 000 km2. Although mortality was not extensive, certain landscapes suffered mortality similar to the highest values reported for semi-arid ecosystems. Rainfall deficit was identified as a key determinant of spatial variation in mortality at the regional scale, which varied from 3% to 49% over two years. Spatial variation at the landscape scale was also high, and affected primarily by species composition and height of the woody plants, with higher mortality for taller individuals. An effect of topographic position and unknown edaphic factors was also evident. Species that suffered high mortality included a common bush encroachment species, but also many non-encroachers. Additional study is needed to confirm that the observed mortality will cause a long-term reduction in woody plant density. |
| 英文关键词 | bush encroachment Dichrostachys cinerea Kruger National Park long-term research spatial variation |
| 类型 | Article |
| 语种 | 英语 |
| 国家 | South Africa |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000521279400003 |
| WOS关键词 | WOODY-PLANT ENCROACHMENT ; INDUCED MORTALITY ; DIE-OFF ; VEGETATION ; PATTERNS ; RAINFALL ; DIEBACK ; TRENDS ; CARBON ; COVER |
| WOS类目 | Ecology ; Environmental Sciences |
| WOS研究方向 | Environmental Sciences & Ecology |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/313912 |
| 作者单位 | SAEON, Ndlovu Node, Phalaborwa, South Africa |
| 推荐引用方式 GB/T 7714 | Swemmer, A. M.. Locally high, but regionally low: the impact of the 2014-2016 drought on the trees of semi-arid savannas, South Africa[J],2020,37(1):31-42. |
| APA | Swemmer, A. M..(2020).Locally high, but regionally low: the impact of the 2014-2016 drought on the trees of semi-arid savannas, South Africa.AFRICAN JOURNAL OF RANGE & FORAGE SCIENCE,37(1),31-42. |
| MLA | Swemmer, A. M.."Locally high, but regionally low: the impact of the 2014-2016 drought on the trees of semi-arid savannas, South Africa".AFRICAN JOURNAL OF RANGE & FORAGE SCIENCE 37.1(2020):31-42. |
| 条目包含的文件 | 条目无相关文件。 | |||||
| 个性服务 |
| 推荐该条目 |
| 保存到收藏夹 |
| 导出为Endnote文件 |
| 谷歌学术 |
| 谷歌学术中相似的文章 |
| [Swemmer, A. M.]的文章 |
| 百度学术 |
| 百度学术中相似的文章 |
| [Swemmer, A. M.]的文章 |
| 必应学术 |
| 必应学术中相似的文章 |
| [Swemmer, A. M.]的文章 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
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。
