干旱区生态环境知识资源中心(Arid): Carbon and ecohydrological priorities in managing woody encroachment: UAV perspective 63 years after a control treatment

Arid

DOI	10.1088/1748-9326/ac3796
	Carbon and ecohydrological priorities in managing woody encroachment: UAV perspective 63 years after a control treatment
	Sankey, Temuulen Ts; Leonard, Jackson; Moore, Margaret M.; Sankey, Joel B.; Belmonte, Adam
通讯作者	Sankey, TT (corresponding author), No Arizona Univ, Sch Informat Comp & Cyber Syst, Flagstaff, AZ 86011 USA.
来源期刊	ENVIRONMENTAL RESEARCH LETTERS
ISSN	1748-9326
出版年	2021
卷号	16 期号:12
英文摘要	Woody encroachment, including both woody species expansion and density increase, is a globally observed phenomenon that deteriorates arid and semi-arid rangeland health, biodiversity, and ecosystem services. Mechanical and chemical control treatments are commonly performed to reduce woody cover and restore ecohydrologic function. While the immediate impacts of woody control treatments are well documented in short-term studies, treatment impacts at decadal scales are not commonly studied. Using a controlled herbicide treatment from 1954 in the Sierra Ancha Experimental Forest in central Arizona, USA, we quantify woody encroachment and associated aboveground carbon accumulation in treated and untreated watersheds. Woody encroachment and aboveground carbon are estimated using high resolution multispectral images and photogrammetric data from a fixed-wing unmanned aerial vehicle (UAV). We then combine the contemporary UAV image-derived estimates with historical records from immediately before and after the treatment to consider long-term trends in woody vegetation cover, aboveground carbon, water yield, and sedimentation. Our results indicate that the treatment has had a lasting impact. More than six decades later, woody cover in two treated watersheds are still significantly lower compared to two control watersheds, even though woody cover increased in all four drainages. Aboveground woody carbon in the treated watersheds is approximately one half that accumulated in the control watersheds. The historical records indicate that herbicide treatment also increased water yield and reduced annual sedimentation. Given the sustained reduction in woody cover and aboveground woody biomass in treated watersheds, we infer that the herbicide treatment has had similarly long lasting impacts on ecohydrological function. Land managers can consider legacy impacts from control treatments to better balance carbon and ecohydrological consequences of woody encroachment and treatment activities.
英文关键词	vegetation change chaparral pinyon-juniper shrub height shrub biomass drone carbon
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000727696500001
WOS关键词	PLANT ENCROACHMENT ; SHRUB ENCROACHMENT ; SATELLITE IMAGERY ; ORGANIC-CARBON ; EROSION ; JUNIPER ; RUNOFF ; SHIFTS ; FIRE ; PHOTOGRAMMETRY
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374023
作者单位	[Sankey, Temuulen Ts; Belmonte, Adam] No Arizona Univ, Sch Informat Comp & Cyber Syst, Flagstaff, AZ 86011 USA; [Leonard, Jackson] US Forest Serv, Rocky Mt Res Stn, Flagstaff, AZ USA; [Moore, Margaret M.] No Arizona Univ, Sch Forestry, Flagstaff, AZ 86011 USA; [Sankey, Joel B.] US Geol Survey, Southwest Biol Sci Ctr, Grand Canyon Monitoring & Res Ctr, Flagstaff, AZ 86001 USA
推荐引用方式 GB/T 7714	Sankey, Temuulen Ts,Leonard, Jackson,Moore, Margaret M.,et al. Carbon and ecohydrological priorities in managing woody encroachment: UAV perspective 63 years after a control treatment[J],2021,16(12).
APA	Sankey, Temuulen Ts,Leonard, Jackson,Moore, Margaret M.,Sankey, Joel B.,&Belmonte, Adam.(2021).Carbon and ecohydrological priorities in managing woody encroachment: UAV perspective 63 years after a control treatment.ENVIRONMENTAL RESEARCH LETTERS,16(12).
MLA	Sankey, Temuulen Ts,et al."Carbon and ecohydrological priorities in managing woody encroachment: UAV perspective 63 years after a control treatment".ENVIRONMENTAL RESEARCH LETTERS 16.12(2021).