干旱区生态环境知识资源中心(Arid): Can soil health in degraded woodlands of a semi-arid environment improve after thirty years?

Arid

DOI	10.1016/j.scitotenv.2024.172218
	Can soil health in degraded woodlands of a semi-arid environment improve after thirty years?
	Kooch, Yahya; Heidari, Fatemeh; Nouraei, Azam; Wang, Liping; Ji, Qiao-qiao; Francaviglia, Rosa; Wu, Donghui
通讯作者	Kooch, Y
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2024
卷号	928
英文摘要	In natural habitats, especially in arid and semi -arid areas that are fragile ecosystems, vegetation degradation is one of the most important factors affecting the variability of soil health. Studying physicochemical and biological parameters that serve as indicators of soil health offers important information on the potential risk of land degradation and the progression of changes in soil performance and health during recovery periods. This study specifically examines the impact of vegetation degradation on soil health indicators and the duration needed to improve the physical, chemical, and biological parameters in a semi -arid mountainous area site types with the dominance of Quercus macranthera Fisch & C.A. Mey and Carpinus orientalis Miller in northern Iran. In different years (2003, 2013, and 2023), litter and soil samples (at depths of 0 - 10, 10 - 20, and 20 - 30 cm) were collected in different types of degraded sites. Additionally, in 2023, a non -degraded site was chosen as a control and similar samples were collected. A total of 48 litter (12 samples for each of the study site types) and 144 soil (4 study site types x 3 depths x 12 samples) samples were collected. In order to investigate the spatial changes of soil basal respiration (or CO 2 emission), which is involved in global warming, from each site type, 50 soil samples were taken along two 250 -meter transects. The findings showed that litter P and Mg contents in the non -degraded site were 1.6 times higher than in degraded site types (2003). Following vegetation degradation, soil fertility indicators decreased by 2 - 4 times. The biota population was lower by about 80 % under the degraded site types (2003) than in the non -degraded site, and the density of fungi and bacteria in the degraded site types was almost half that of the non -degraded site types. Geostatistics showed the high variance (linear model) of CO 2 emissions in areas without degradation. In addition, vegetation degradation significantly reduced soil carbon and nitrogen mineralization. Although soil health indicators under the degraded vegetation have improved over time (30 years), results showed that even thirty years is not enough for the full recovery of a degraded ecosystem, and more time is needed for the degraded area to reach the same conditions as the non -degraded site. Considering the time required for natural restoration in degraded site types, it is necessary to prioritize the conservation of vegetation and improve the ecosystem restoration process with adequate interventions.
英文关键词	Land management Litter quality Topsoil Fertility Microbial activities
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001231679900001
WOS关键词	ORGANIC-CARBON FRACTIONS ; FINE-ROOT BIOMASS ; LAND-USE CHANGE ; MICROBIAL BIOMASS ; QUALITY INDICATORS ; DYNAMICS ; DIVERSITY ; FOREST ; MATTER ; DEGRADATION
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/2XILL650/405488
推荐引用方式 GB/T 7714	Kooch, Yahya,Heidari, Fatemeh,Nouraei, Azam,et al. Can soil health in degraded woodlands of a semi-arid environment improve after thirty years?[J],2024,928.
APA	Kooch, Yahya.,Heidari, Fatemeh.,Nouraei, Azam.,Wang, Liping.,Ji, Qiao-qiao.,...&Wu, Donghui.(2024).Can soil health in degraded woodlands of a semi-arid environment improve after thirty years?.SCIENCE OF THE TOTAL ENVIRONMENT,928.
MLA	Kooch, Yahya,et al."Can soil health in degraded woodlands of a semi-arid environment improve after thirty years?".SCIENCE OF THE TOTAL ENVIRONMENT 928(2024).