Arid
DOI10.1002/esp.4377
The effect of landform variation on vegetation patterning and related sediment dynamics
Baartman, Jantiene E. M.1; Temme, Arnaud J. A. M.2; Saco, Patricia M.3
通讯作者Baartman, Jantiene E. M.
来源期刊EARTH SURFACE PROCESSES AND LANDFORMS
ISSN0197-9337
EISSN1096-9837
出版年2018
卷号43期号:10页码:2121-2135
英文摘要

Semi-arid ecosystems are often spatially self-organized in typical patterns of vegetation bands with high plant cover interspersed with bare soil areas, also known as tiger bush’. In modelling studies, most often, straight planar slopes were used to analyse vegetation patterning. The effect of slope steepness has been investigated widely, and some studies investigated the effects of microtopography and hillslope orientation. However, at the larger catchment scale, the overall form of the landscape may affect vegetation patterning and these more complex landscapes are much more prevalent than straight slopes. Hence, our objective was to determine the effect of landform variation on vegetation patterning and sediment dynamics. We linked two well-established models that simulate (a) plant growth, death and dispersal of vegetation, and (b) erosion and sedimentation dynamics. The model was tested on a straight planar hillslope and then applied to (i) a set of simple synthetic topographies with varying curvature and (ii) three more complex, real-world landscapes of distinct morphology. Results show banded vegetation patterning on all synthetic topographies, always perpendicular to the slope gradient. Interestingly, we also found that movement of bands - a debated phenomenon - seems to be dependent on curvature. Vegetation banding was simulated on the slopes of the alluvial fan and along the valley slopes of the dissected and rolling landscapes. In all landscapes, local valleys developed a full vegetation cover induced by water concentration, which is consistent with observations worldwide. Finally, banded vegetation patterns were found to reduce erosion significantly as compared to other vegetation configurations. (c) 2018 The Authors. Earth Surface Processes and Landforms published by John Wiley & Sons Ltd.


英文关键词banded vegetation sediment dynamics landscape evolution model landform curvature
类型Article
语种英语
国家Netherlands ; USA ; Australia
收录类别SCI-E
WOS记录号WOS:000440821400007
WOS关键词LANDSCAPE EVOLUTION MODEL ; BANDED VEGETATION ; SEMIARID ENVIRONMENTS ; KLAUSMEIER MODEL ; ARID ECOSYSTEMS ; ECOHYDROLOGICAL PROCESSES ; RAINFALL INTENSITY ; EASTERN AUSTRALIA ; SOUTHEAST SPAIN ; ALICE SPRINGS
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/208633
作者单位1.Wageningen Univ, Soil Phys & Land Management Grp, POB 47, NL-6700 AA Wageningen, Netherlands;
2.Kansas State Univ, Dept Geog, Manhattan, KS 66506 USA;
3.Univ Newcastle, Sch Engn, Callaghan, NSW, Australia
推荐引用方式
GB/T 7714
Baartman, Jantiene E. M.,Temme, Arnaud J. A. M.,Saco, Patricia M.. The effect of landform variation on vegetation patterning and related sediment dynamics[J],2018,43(10):2121-2135.
APA Baartman, Jantiene E. M.,Temme, Arnaud J. A. M.,&Saco, Patricia M..(2018).The effect of landform variation on vegetation patterning and related sediment dynamics.EARTH SURFACE PROCESSES AND LANDFORMS,43(10),2121-2135.
MLA Baartman, Jantiene E. M.,et al."The effect of landform variation on vegetation patterning and related sediment dynamics".EARTH SURFACE PROCESSES AND LANDFORMS 43.10(2018):2121-2135.
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