干旱区生态环境知识资源中心(Arid): Responses of Native Plants and Downy Brome to a Water-Conserving Soil Amendment

Arid

DOI	10.1016/j.rama.2019.10.001
	Responses of Native Plants and Downy Brome to a Water-Conserving Soil Amendment
	Johnston, Danielle B.1,2; Garbowski, Magda 1,2,3
通讯作者	Johnston, Danielle B.
来源期刊	RANGELAND ECOLOGY & MANAGEMENT
ISSN	1550-7424
EISSN	1551-5028
出版年	2020
卷号	73 期号:1 页码:19-29
英文摘要	Restoring native plants in rangelands threatened by downy brome (Bromus tectorum L.) presents a serious challenge to land managers. Higher, more consistent soil moisture, as well as slightly compacted soils, may reduce the competitive abilities of downy brome. We manipulated these factors with three treatments: superabsorbent polymer (SAP), a soil-binding agent, and roller compaction at two restoration sites, Wagon Road Ridge (WRR) and Sagebrush (SGE), in northwestern Colorado. SAPs absorb water when soils are wet and then gradually release it, often reducing plant water stress. The binding agent we used is purported to increase water infiltration while reducing soil movement. In Experiment 1, we crossed an SAP, a binding agent, and rolling and found that SAP benefitted perennial grass establishment at the WRR site only. SAP also decreased downy brome cover and biomass at WRR. The binding agent increased soil moisture at both sites, and the highest level of binding agent reduced downy brome cover in the absence of SAP at the SGE site. In Experiment 2, we examined only SAP, with larger plots and a more complex seed mix. Again, SAP benefitted perennial grass establishment at WRR only. SAP reduced initial perennial forb density at both sites but did not affect forb cover in subsequent years. SAP effects on downy brome were site-specific. There was a trend for reduced downy brome cover with SAP at WRR, but SAP caused a large increase in downy brome cover in yr 3 at SGE. Granulated SAP can be applied easily along with drill seeding, making it potentially applicable for dryland restoration. However, site specific factors may influence whether perennial grasses or downy brome most benefit from SAP application. (C) 2019 Colorado Parks and Wildlife. Published by Elsevier Inc. on behalf of The Society for Range Management.
英文关键词	arid lands cheatgrass drought hydrogel restoration superabsorbent polymer
类型	Article
语种	英语
国家	USA
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000504332700003
WOS关键词	SUPER-ABSORBENT POLYMER ; SUPERABSORBENT POLYMER ; CHEATGRASS INVASION ; HYDROGEL AMENDMENT ; YIELD COMPONENTS ; EROSION CONTROL ; CLIMATE-CHANGE ; BASIN ; MOISTURE ; DESERT
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2020-01-01
来源机构	Colorado State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312015
作者单位	1.Colorado Pk & Wildlife, Grand Junction, CO 81505 USA; 2.Bioagr Sci & Pest Management, Ft Collins, CO 80523 USA; 3.Colorado State Univ, Grad Degree Program Ecol, Ft Collins, CO 80523 USA
推荐引用方式 GB/T 7714	Johnston, Danielle B.,Garbowski, Magda. Responses of Native Plants and Downy Brome to a Water-Conserving Soil Amendment[J]. Colorado State University,2020,73(1):19-29.
APA	Johnston, Danielle B.,&Garbowski, Magda.(2020).Responses of Native Plants and Downy Brome to a Water-Conserving Soil Amendment.RANGELAND ECOLOGY & MANAGEMENT,73(1),19-29.
MLA	Johnston, Danielle B.,et al."Responses of Native Plants and Downy Brome to a Water-Conserving Soil Amendment".RANGELAND ECOLOGY & MANAGEMENT 73.1(2020):19-29.