Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/ldr.3598 |
Interconnected effects of shrubs, invertebrate-derived macropores and soil texture on water infiltration in a semi-arid savanna rangeland | |
Marquart, Arnim1,2; Eldridge, David J.3; Geissler, Katja1; Lobas, Christoph1; Blaum, Niels1 | |
通讯作者 | Marquart, Arnim |
来源期刊 | LAND DEGRADATION & DEVELOPMENT |
ISSN | 1085-3278 |
EISSN | 1099-145X |
出版年 | 2020 |
卷号 | 31期号:16页码:2307-2318 |
英文摘要 | Many semi arid savannas are prone to degradation, caused for example, by overgrazing or extreme climatic events, which often lead to shrub encroachment. Overgrazing by livestock affects vegetation and infiltration processes by directly altering plant composition (selective grazing) or by impacting soil physical properties (trampling). Water infiltration is controlled by several parameters, such as macropores (created by soil-burrowing animals or plant roots) and soil texture, but their effects have mostly been studied in isolation. Here we report on a study, in which we conducted infiltration experiments to analyze the interconnected effects of invertebrate-created macropores, shrubs and soil texture (sandy soil and loamy sand) on infiltration in two Namibian rangelands. Using structural equation modeling, we found a direct positive effect of shrub size on infiltration and indirectly via invertebrate macropores on both soil types. On loamy sands this effect was even stronger, but additionally, invertebrate-created macropores became relevant as a direct driver of infiltration. Our results provide new insights into the effects of vegetation and invertebrates on infiltration under different soil textures. Pastoralists should use management strategies that maintain a heterogeneous plant community that supports soil fauna to sustain healthy soil water dynamics, particularly on soils with higher loam content. Understanding the fundamental functioning of soil water dynamics in drylands is critical because these ecosystems are water-limited and support the livelihoods of many cultures worldwide. |
英文关键词 | hydrology infiltration invertebrate macropores shrub-encroachment soil function soil texture |
类型 | Article |
语种 | 英语 |
国家 | Germany ; South Africa ; Australia |
收录类别 | SCI-E |
WOS记录号 | WOS:000523278800001 |
WOS关键词 | CHIHUAHUAN DESERT ; SPATIAL-PATTERNS ; ENCROACHMENT ; VEGETATION ; DYNAMICS ; GRASSLAND ; RAINFALL ; IMPACT ; DIVERSITY ; HERBIVORY |
WOS类目 | Environmental Sciences ; Soil Science |
WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/315132 |
作者单位 | 1.Univ Potsdam, Inst Biochem & Biol, Dept Plant Ecol & Nat Conservat, Muhlenberg 3, D-14476 Potsdam, Germany; 2.North West Univ, Environm Sci & Management, Potchefstroom, South Africa; 3.Univ New South Wales, Sch Biol Earth & Environm Sci, Ctr Ecosyst Sci, Sydney, NSW, Australia |
推荐引用方式 GB/T 7714 | Marquart, Arnim,Eldridge, David J.,Geissler, Katja,et al. Interconnected effects of shrubs, invertebrate-derived macropores and soil texture on water infiltration in a semi-arid savanna rangeland[J],2020,31(16):2307-2318. |
APA | Marquart, Arnim,Eldridge, David J.,Geissler, Katja,Lobas, Christoph,&Blaum, Niels.(2020).Interconnected effects of shrubs, invertebrate-derived macropores and soil texture on water infiltration in a semi-arid savanna rangeland.LAND DEGRADATION & DEVELOPMENT,31(16),2307-2318. |
MLA | Marquart, Arnim,et al."Interconnected effects of shrubs, invertebrate-derived macropores and soil texture on water infiltration in a semi-arid savanna rangeland".LAND DEGRADATION & DEVELOPMENT 31.16(2020):2307-2318. |
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