干旱区生态环境知识资源中心(Arid): Hydrological function of rapidly induced biocrusts

Arid

DOI	10.1002/eco.2089
	Hydrological function of rapidly induced biocrusts
	Fick, Stephen E.1,2; Barger, Nichole N.1; Duniway, Michael C.2
通讯作者	Fick, Stephen E.
来源期刊	ECOHYDROLOGY
ISSN	1936-0584
EISSN	1936-0592
出版年	2019
卷号	12 期号:4
英文摘要	In dryland ecosystems, land degradation and erosion pose severe threats to ecosystem productivity and human well-being. Bio-inoculation of degraded soils with native biological soil crusts (biocrusts) is a promising yet relatively untested means to improve soil stability and hydrological function (i.e., increase infiltration and reduce run-off). In a degraded semiarid grassland on the Colorado Plateau, we studied the establishment and hydrological function (via simulated rainfall) of induced biocrusts grown with and without an organic soil stabilizer (psyllium, derived from Plantago sp.), after a period of 4months. We found evidence of biocrust establishment, including significantly higher biocrust cover, chlorophyll a, and exopolysaccharides in inoculated plots compared with controls. Plots inoculated with biocrust had higher run-off and sediment yields than controls during rainfall simulation. However, this effect was mitigated in plots where stabilizer was added, resulting in greater soil aggregate stability and higher levels of infiltration (reduced total run-off). The time to ponding was significantly greater than control for all inoculated plots, suggesting that induced biocrusts may be most effective at improving infiltration under low-intensity, smaller precipitation events. Notably, the biocrusts in this study lacked rough surface microtopography, which is common in well-developed biocrusts regionally and likely instrumental in slowing overland flow and increasing infiltration for larger rain events. These results highlight the temporal lag that may exist between apparent and functional restoration of biocrusts. In addition, the simultaneous additions of stabilizing amendments with biocrust inoculum may work collectively to achieve both short- and long-term restoration targets.
英文关键词	biological soil crust bioremediation Colorado Plateau cyanobacteria EPS erosion lichen microbial inoculation moss psyllium
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000477748700010
WOS关键词	BIOLOGICAL SOIL CRUSTS ; LOESS PLATEAU REGION ; COLORADO PLATEAU ; AGGREGATE STABILITY ; MICROBIOTIC CRUST ; TENGGER DESERT ; NEGEV DESERT ; WIND EROSION ; RUNOFF ; EXOPOLYSACCHARIDES
WOS类目	Ecology ; Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
来源机构	United States Geological Survey ; New Mexico State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215135
作者单位	1.Univ Colorado, Dept Ecol & Evolutionary Biol, Boulder, CO 80309 USA; 2.US Geol Survey, Southwest Biol Sci Ctr, Moab, UT USA
推荐引用方式 GB/T 7714	Fick, Stephen E.,Barger, Nichole N.,Duniway, Michael C.. Hydrological function of rapidly induced biocrusts[J]. United States Geological Survey, New Mexico State University,2019,12(4).
APA	Fick, Stephen E.,Barger, Nichole N.,&Duniway, Michael C..(2019).Hydrological function of rapidly induced biocrusts.ECOHYDROLOGY,12(4).
MLA	Fick, Stephen E.,et al."Hydrological function of rapidly induced biocrusts".ECOHYDROLOGY 12.4(2019).