Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.3390/rs11050576 |
| Trends in Woody and Herbaceous Vegetation in the Savannas of West Africa | |
| Anchang, Julius Y.1; Prihodko, Lara2; Kaptue, Armel T.3; Ross, Christopher W.1; Ji, Wenjie1; Kumar, Sanath S.1; Lind, Brianna1; Sarr, Mamadou A.4; Diouf, Abdoul A.4; Hanan, Niall P.1 | |
| 通讯作者 | Anchang, Julius Y. |
| 来源期刊 | REMOTE SENSING
 |
| EISSN | 2072-4292 |
| 出版年 | 2019 |
| 卷号 | 11期号:5 |
| 英文摘要 | We assess 32 years of vegetation change in the West African Sudano-Sahelian region following the drought events of the 1970s and 1980s. Change in decadal mean rain use efficiency is used to diagnose trends in woody vegetation that is expected to respond more slowly to post-drought rainfall gains, while change in the slope of the productivity-rainfall relationship is used to infer changing herbaceous conditions between early and late periods of the time series. The linearity/non-linearity of the productivity-rainfall relationship and its impact on the interpretation of overall greening trends, and specific woody and herbaceous vegetation trends, is also examined. Our results show a mostly positive association between productivity and rainfall (69% of pixels), which can be best described as linear (32%) or saturating (37%). Choosing the best' model at a specific location using Akaike Information Criterion has no discernible effect on the interpretation of overall greening or herbaceous trends, but does influence the detection of trends in woody vegetation. We conclude that widespread recovery in woody vegetation is responsible for the post-drought greening phenomenon reported elsewhere for the Sahel and Sudanian sub-regions. Meanwhile, trends in herbaceous vegetation are less pronounced, with no consistent indication towards either herbaceous degradation or recovery. |
| 英文关键词 | sudano-sahelian semi-arid drylands land degradation re-greening rain use efficiency |
| 类型 | Article |
| 语种 | 英语 |
| 国家 | USA ; Canada ; Senegal |
| 开放获取类型 | Green Submitted, gold |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000462544500104 |
| WOS关键词 | PROXY GLOBAL ASSESSMENT ; SHRUB ENCROACHMENT ; SAHEL ; DYNAMICS ; MODIS ; NDVI ; RAINFALL ; AVHRR ; INDEX ; DEGRADATION |
| WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 来源机构 | New Mexico State University |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/218345 |
| 作者单位 | 1.New Mexico State Univ, Plant & Environm Sci, POB 30003 MSC 3Q, Las Cruces, NM 88001 USA; 2.New Mexico State Univ, Anim & Range Sci, POB 30003 MSC 3-I, Las Cruces, NM 88001 USA; 3.Fujitsu Consulting Inc, 7101 Ave Parc, Montreal, PQ H3N 1X9, Canada; 4.Ctr Suivi Ecol, POB 15532, Dakar, Senegal |
| 推荐引用方式 GB/T 7714 | Anchang, Julius Y.,Prihodko, Lara,Kaptue, Armel T.,et al. Trends in Woody and Herbaceous Vegetation in the Savannas of West Africa[J]. New Mexico State University,2019,11(5). |
| APA | Anchang, Julius Y..,Prihodko, Lara.,Kaptue, Armel T..,Ross, Christopher W..,Ji, Wenjie.,...&Hanan, Niall P..(2019).Trends in Woody and Herbaceous Vegetation in the Savannas of West Africa.REMOTE SENSING,11(5). |
| MLA | Anchang, Julius Y.,et al."Trends in Woody and Herbaceous Vegetation in the Savannas of West Africa".REMOTE SENSING 11.5(2019). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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