Contribution of Fine Roots to Soil Organic Carbon Accumulation in Different Desert Communities in the Sangong River Basin

doi:10.3390/ijerph191710936

	Contribution of Fine Roots to Soil Organic Carbon Accumulation in Different Desert Communities in the Sangong River Basin
	Tian, Sihui 1; Liu, Xin 1; Jin, Baocheng ; Zhao, Xuechun
	2022
发表期刊	INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
卷号	19 期号:17
摘要	This study explored the relationship between soil organic carbon (SOC) and root distribution, with the aim of evaluating the carbon stocks and sequestration potential under five plant communities (Alhagi sparsifolia, Tamarix ramosissima, Reaumuria soongorica, Haloxylon ammodendron, and Phragmites communis) in an arid region, the Sangong River watershed desert ecosystem. Root biomass, ecological factors, and SOC in different layers of a 0-100 cm soil profile were investigated. The results demonstrated that almost all living fine root biomass (11.78-34.41 g/m(2)) and dead fine root biomass (5.64-15.45 g/m(2)) levels were highest in the 10-20 cm layer, except for the P. communis community, which showed the highest living and dead fine root biomass at a depth of 60-70 cm. Fine root biomass showed strong seasonal dynamics in the five communities from June to October. The biomass levels of the A. sparsifolia (138.31 g/m(2)) and H. ammodendron (229.73 g/m(2)) communities were highest in August, whereas those of the T. ramosissima (87.76 g/m(2)), R. soongorica (66.29 g/m(2)), and P. communis (148.31 g/m(2)) communities were highest in September. The SOC of the five communities displayed strong changes with increasing soil depth. The mean SOC value across all five communities was 77.36% at 0-30 cm. The highest SOC values of the A. sparsifolia (3.08 g/kg), T. ramosissima (2.35 g/kg), and R. soongorica (2.34 g/kg) communities were found in June, and the highest value of the H. ammodendron (2.25 and 2.31 g/kg, p > 0.05) community was found in June and September. The highest SOC values of the P. communis (1.88 g/kg) community were found in July. Fine root production and turnover rate were 50.67-486.92 g/m(2)/year and 1.25-1.98 times per year. The relationships among SOC, fine root biomass, and ecological factors (soil water content and soil bulk density) were significant for all five communities. Based on the results, higher soil water content and soil conductivity favored the decomposition of root litter and increased fine root turnover, thereby facilitating SOC formation. Higher pH and bulk density levels are not conducive to soil biological activity and SOC mineralization, leading to increased SOC levels in desert regions.
关键词	desert communities fine root soil organic carbon soil factors
学科领域	Environmental Sciences ; Public, Environmental & Occupational Health
DOI	10.3390/ijerph191710936
收录类别	SCI
语种	英语
WOS关键词	VERTICAL-DISTRIBUTION ; LITTER DECOMPOSITION ; SEMIARID REGION ; LEAF-LITTER ; TURNOVER ; FOREST ; BIOMASS ; ECOSYSTEMS ; DYNAMICS ; CLIMATE
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED) ; Social Science Citation Index (SSCI)
WOS记录号	WOS:000851912800001
出版者	MDPI
文献子类	Article
出版地	BASEL
EISSN	1660-4601
资助机构	Science and Technology Department of Guizhou Province [1Y076, (2021) Yiban503]
作者邮箱	xczhao@gzu.edu.cn
作品OA属性	Green Published, gold
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/28755
专题	植被与环境变化国家重点实验室
作者单位	1.Guizhou Univ, Coll Anim Sci, Guiyang 550025, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Tian, Sihui,Liu, Xin,Jin, Baocheng,et al. Contribution of Fine Roots to Soil Organic Carbon Accumulation in Different Desert Communities in the Sangong River Basin[J]. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH,2022,19(17).
APA	Tian, Sihui,Liu, Xin,Jin, Baocheng,&Zhao, Xuechun.(2022).Contribution of Fine Roots to Soil Organic Carbon Accumulation in Different Desert Communities in the Sangong River Basin.INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH,19(17).
MLA	Tian, Sihui,et al."Contribution of Fine Roots to Soil Organic Carbon Accumulation in Different Desert Communities in the Sangong River Basin".INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 19.17(2022).

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