干旱区生态环境知识资源中心(Arid): Composted biosolids amendments for enhanced soil organic carbon and water storage in perennial pastures in Colorado

Arid

DOI	10.1016/j.agee.2023.108401
	Composted biosolids amendments for enhanced soil organic carbon and water storage in perennial pastures in Colorado
	Cooper, Alexia; DeMarco, Jennie
通讯作者	Cooper, A
来源期刊	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN	0167-8809
EISSN	1873-2305
出版年	2023
卷号	347
英文摘要	Land management of grasslands can play a significant role in climate change mitigation by influencing soil carbon (C) storage. Soil amendments, such as adding compost, have been shown to increase soil C storage while simultaneously increasing plant productivity and soil water holding capacity (WHC), factors that provide immediate benefits to ranchers. Research to date has mainly focused on temperate annual grasslands. However, little is known if irrigated perennial pasturelands in cold, arid climates respond similarly. This study's objective was to determine the immediate effects of a 5 cm depth application of biosolids compost on plant productivity, soil moisture, and soil C storage. Research sites were established at four ranches in Gunnison, CO, a high-elevation, arid region. During the first year, there was a significant increase in total aboveground biomass (AGB) across three of the four sites (F-3,F-32 = 62.3, p < 0.001), resulting in a difference in total AGB of 199.83 g center dot m(-2) (95% CI 133.6 - 266.1 g center dot m(-2)) between the control and treatment, an average increase of 109% (SE +/- 20%). There was a significant increase in soil moisture in the treatment plots relative to the controls at each site for most of the growing season (July-Oct). On average, soil organic matter (SOM) increased by 32% SE +/- 10.5, with two sites demonstrating a significant increase. Soil C stocks increased across sites with biosolids, but this was only significant at one site (F-1,F-32 = 7.05, p = 0.012), the most degraded of all four pasturelands. This study demonstrated that a single application of biosolids compost could elicit a significant increase in soil moisture throughout the growing season and increase plant biomass production. Biosolid applications can also increase SOC. However, this response's magnitude is site-specific and is associated with the degree of soil degradation, which might be related to land management history. Using biosolids compost on pasturelands seems to be a positive strategy to improve soil health and its associated co-benefits. Still, managers should consider the degree of degradation of their land when determining cost benefits.
英文关键词	Biosolids compost Climate mitigation Drought resiliency Grasslands Soil carbon sequestration soil health
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:001003411400001
WOS关键词	CLIMATE-CHANGE ; NITROGEN ; MATTER ; IMPACTS ; SEQUESTRATION ; FERTILIZERS ; RESILIENCE ; ECOSYSTEM ; PRODUCTIVITY ; RESTORATION
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/2XILL650/395114
推荐引用方式 GB/T 7714	Cooper, Alexia,DeMarco, Jennie. Composted biosolids amendments for enhanced soil organic carbon and water storage in perennial pastures in Colorado[J],2023,347.
APA	Cooper, Alexia,&DeMarco, Jennie.(2023).Composted biosolids amendments for enhanced soil organic carbon and water storage in perennial pastures in Colorado.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,347.
MLA	Cooper, Alexia,et al."Composted biosolids amendments for enhanced soil organic carbon and water storage in perennial pastures in Colorado".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 347(2023).