干旱区生态环境知识资源中心(Arid): The effect of shrublands degradation intensity on soil organic matter-associated properties in a semi-arid ecosystem

Arid

DOI	10.1016/j.scitotenv.2022.158664
	The effect of shrublands degradation intensity on soil organic matter-associated properties in a semi-arid ecosystem
	Kooch, Yahya; Amani, Masoumeh; Abedi, Mehdi
通讯作者	Kooch, Y
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2022
卷号	853
英文摘要	Vegetation degradation can have significant effects on organic matter fractions as well as various soil characteristics. All these can lead to the changes in soil microbial communities, which are main drivers of nutrient cycles. This is es-pecially important for mountainous ecosystems that are very sensitive and fragile habitats due to their climatic condi-tions, but less attention has been paid to them. Thus, Mirkola mountainous region (northern Iran) with semi-arid climate and vegetation being dominated by Crataegus and Berberis shrubs were investigated in this study. Sites with different intensities of vegetation degradation [light (60-70 % coverage), moderate (30-40 % coverage) and heavy (0-10 % coverage)] and also non-degraded control sites (90-100 % coverage) were selected. In order to avoid pseudoreplication, three plots, each with an area of 1 ha (100 m x 100 m), were used for each of the four studied hab-itats. Soil (in three soil depths at 0-10 cm, 10-20 cm and 20-30 cm) samples were collected from the corners and also the center (n = 5) of the plots using iron frames (30 x 30 cm). A total of 180 soil samples (4 habitats x 15 sample x 3 depths) were transferred to the laboratory. Labile and non-labile contents of soil organic matter (SOM) (C and N in soil particles and aggregates, C and N stocks, particulate and dissolved organic matter, hot-water extractable carbohydrate, C and N mineralization) were measured in each of these sites. Results showed that vegetation degradation might result in both labile and non-labile SOM losses. SOM and its associated properties were highest in the non-degraded sites, whereas, lower values were common under degraded areas. Based on the obtained data, vegetation cover can enhance the amount of organic matter entering the soil (especially in the surface layers) and formation of fertile islands in eco-systems. Accordingly, vegetation protection is emphasized to maintain stability and provide ecosystem services in mountainous semi-arid regions.
英文关键词	Soil aggregates Labile and non -labile soil organic matter Carbon and nitrogen mineralization
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000861181400006
WOS关键词	AGGREGATE STABILITY ; LITTER DECOMPOSITION ; CARBON SEQUESTRATION ; NITROGEN ; FRACTIONS ; DYNAMICS ; PLANT ; MINERALIZATION ; DEFORESTATION ; GRASSLANDS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394410
推荐引用方式 GB/T 7714	Kooch, Yahya,Amani, Masoumeh,Abedi, Mehdi. The effect of shrublands degradation intensity on soil organic matter-associated properties in a semi-arid ecosystem[J],2022,853.
APA	Kooch, Yahya,Amani, Masoumeh,&Abedi, Mehdi.(2022).The effect of shrublands degradation intensity on soil organic matter-associated properties in a semi-arid ecosystem.SCIENCE OF THE TOTAL ENVIRONMENT,853.
MLA	Kooch, Yahya,et al."The effect of shrublands degradation intensity on soil organic matter-associated properties in a semi-arid ecosystem".SCIENCE OF THE TOTAL ENVIRONMENT 853(2022).