干旱区生态环境知识资源中心(Arid): Soil health reduction following the conversion of primary vegetation covers in a semi-arid environment

Arid

DOI	10.1016/j.scitotenv.2024.171113
	Soil health reduction following the conversion of primary vegetation covers in a semi-arid environment
	Kooch, Yahya; Kartalaei, Zahra Mohmedi; Amiri, Mojtaba; Zarafshar, Mehrdad; Shabani, Saeid; Mohammady, Majid
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	921
英文摘要	A degraded forest is the outcome of a degradation process that has adverse effects on ecosystem functions and services. This phenomenon results in alterations of soil physicochemical and biological properties, which serve as valuable indicators for assessing soil health that has been recognized as a crucial component of soil quality. For several decades, the conversion of forested areas into rangeland has been documented in specific regions of the world. There is a widespread lack of global understanding regarding the lasting consequences of land degradation on soil health indicators. The present study aims to investigate the impact of forest degradation on soil health indicators in a mountainous semi -arid region located in northern Iran. The study area was predominantly forested, but due to human activities over the past 30 years, it has been transformed into three distinct land uses: forest, forest -rangeland ecotones and rangeland. In each of these land covers, a total of 20 litter (O -horizon) and 20 soil (from two depths of 0-15 and 15-30 cm) samples were collected in the summer (August 2022) season. According to our results, the highest litter thickness, P and Mg were in forest ecosystem, the lowest in rangeland ecosystem. The findings indicated that following the conversion of forest to rangeland, there was a decrease in soil aggregate stability, porosity, soil organic matter, POC, PON, NH4+, NO3- and nutrient levels, while soil bulk density increased. The forest ecosystem showed notably higher C and N stocks (45 and 5.21 Mg ha - 1) in comparison to the rangeland (38 and 3.32 Mg ha - 1) ecosystem. In addition, P, K, Ca, and Mg exhibited elevated levels within the total root of the forest ecosystem (2.12, 1.23, 0.71, and 0.38 %, respectively), whereas the lower values (1.29, 1.01, 0.43, and 0.23 %, respectively) were found in the rangeland ecosystem. Following the shift of land cover from forest to rangeland, soil fauna, microflora populations, soil enzymes and microbial activities decreased (about 1-2 times higher in the forestland). This research emphasizes the urgent need to advance sustainable management practices to prevent further degradation and promote the implementation of restoration or rehabilitation techniques in degraded forests. Despite being conducted in a semi -arid region situated in northern Iran, the findings of this study have considerable value for the sustainable management of soil and land conservation in various other semi -arid regions around the world.
英文关键词	Primary vegetation Secondary vegetation Litter properties Root characters Soil function
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001205877100001
WOS关键词	LAND-USE SYSTEMS ; MICROBIAL BIOMASS CARBON ; FINE-ROOT BIOMASS ; ORGANIC-CARBON ; FUNCTIONAL DIVERSITY ; QUALITY INDICATORS ; FOREST SOILS ; NITROGEN ; MANAGEMENT ; DYNAMICS
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/2XILL650/405474
推荐引用方式 GB/T 7714	Kooch, Yahya,Kartalaei, Zahra Mohmedi,Amiri, Mojtaba,et al. Soil health reduction following the conversion of primary vegetation covers in a semi-arid environment[J],2024,921.
APA	Kooch, Yahya,Kartalaei, Zahra Mohmedi,Amiri, Mojtaba,Zarafshar, Mehrdad,Shabani, Saeid,&Mohammady, Majid.(2024).Soil health reduction following the conversion of primary vegetation covers in a semi-arid environment.SCIENCE OF THE TOTAL ENVIRONMENT,921.
MLA	Kooch, Yahya,et al."Soil health reduction following the conversion of primary vegetation covers in a semi-arid environment".SCIENCE OF THE TOTAL ENVIRONMENT 921(2024).