Arid
DOI10.1016/j.agee.2013.11.026
Arid old-field restoration: Native perennial grasses suppress weeds and erosion, but also suppress native shrubs
Porensky, Lauren M.1; Leger, Elizabeth A.1; Davison, Jay2; Miller, W. Wally1; Goergen, Erin M.1; Espeland, Erin K.1; Carroll-Moore, Erin M.1
通讯作者Porensky, Lauren M.
来源期刊AGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN0167-8809
EISSN1873-2305
出版年2014
卷号184页码:135-144
英文摘要

Rates of cropland abandonment in arid regions are increasing, and abandoned fields in such regions can have low levels of ecosystem function and biodiversity. Long-lived, drought-tolerant shrubs are dominant components of many arid ecosystems, providing multiple ecosystem services such as soil stabilization, herbaceous plant facilitation, carbon storage and wildlife habitat. On abandoned agricultural fields, shrub restoration is hindered by multiple challenges, including erosion, water stress and invasive species. We hypothesized that applying short-term irrigation and seeding native perennial grasses would facilitate native shrub establishment by reducing erosion and weed abundance. Using a blocked split-plot design, we evaluated the separate and combined impacts of short-term irrigation and perennial grass seeding on five-year restoration outcomes (including direct measurements of wind erosion) at two former agricultural fields in North America’s arid Great Basin. After two years, irrigation had increased the density and biomass of seeded grasses by more than ten-fold. The combination of irrigation and seeded grasses was associated with significantly lower wind erosion, weed density and weed biomass. Three years after irrigation ended, seeded grasses remained significantly more abundant in formerly irrigated than non-irrigated plots. Formerly irrigated plots also had significantly less bare ground, annual plant cover and weed biomass than non-irrigated plots. Large plant-canopy gaps were fewer in irrigated and seeded plots. Although seeded grasses reduced erosion and invasion, they failed to facilitate native shrub establishment. Shrub cover and density were highest in plots that had been drill-seeded and irrigated, but lacked perennial grasses. Our results indicate that short-term irrigation has persistent restoration benefits, and that a tradeoff exists between the benefits and costs of seeding perennial grasses into degraded arid shrubland sites. Published by Elsevier B.V.


英文关键词Cropland abandonment Irrigation Native shrub facilitation US arid Great Basin Walker Basin Weed control
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000334002700014
WOS关键词POSITIVE INTERACTIONS ; ABIOTIC STRESS ; BIG SAGEBRUSH ; LAND-USE ; SOIL ; ESTABLISHMENT ; FACILITATION ; VEGETATION ; DIVERSITY ; RECOVERY
WOS类目Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
WOS研究方向Agriculture ; Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/180531
作者单位1.Univ Nevada, Dept Nat Resources & Environm Sci, Reno, NV 89557 USA;
2.Univ Nevada Cooperat Extens, Fallon, NV 89406 USA
推荐引用方式
GB/T 7714
Porensky, Lauren M.,Leger, Elizabeth A.,Davison, Jay,et al. Arid old-field restoration: Native perennial grasses suppress weeds and erosion, but also suppress native shrubs[J],2014,184:135-144.
APA Porensky, Lauren M..,Leger, Elizabeth A..,Davison, Jay.,Miller, W. Wally.,Goergen, Erin M..,...&Carroll-Moore, Erin M..(2014).Arid old-field restoration: Native perennial grasses suppress weeds and erosion, but also suppress native shrubs.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,184,135-144.
MLA Porensky, Lauren M.,et al."Arid old-field restoration: Native perennial grasses suppress weeds and erosion, but also suppress native shrubs".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 184(2014):135-144.
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