气候变化领域集成服务门户(CCPortal): Soil Mineral-Associated Organic Carbon and Its Relationship to Clay Minerals across Grassland Transects in China

CCPortal

DOI	10.3390/app14052061
	Soil Mineral-Associated Organic Carbon and Its Relationship to Clay Minerals across Grassland Transects in China
	Zhao, Minshuang; Zhang, Zhidan; Li, Meijia; Gao, Chunyang; Zhang, Jinjing; He, Nianpeng
发表日期	2024
EISSN	2076-3417
起始页码	14
结束页码	5
卷号	14 期号:5
英文摘要	The purpose of this study was to determine the mineral-associated organic carbon (MOC) and its relationship to clay minerals under different temperatures and precipitation. We selected three typical grassland transects in China: Titanium Plate (TP), Mongolian Plate (MP), and Loess Plate (LP) with natural temperature gradients. Along the transect, there is a gradient in the precipitation between the various types of grasslands. The surface soil (0-10 cm) was sampled to determine the MOC. Clay minerals were charactered by X-ray diffraction (XRD). According to the findings, the MOC content increased with decreasing temperature (5.41-14.89 g/kg). MOC had a positive correlation (r = 0.67) with the amount of clay mineral content. In the large-scale study of transects, precipitation masks the effect of temperature change on the MOC to a certain extent. It indirectly affected the MOC content by affecting the mixed-layer illite/smectite (I/Sme) content, and this effect was strongest at the lowest temperature TP (r = -0.73). Except for precipitation, CaO in the soil can affect soil organic carbon (SOC) stability by influencing the pH and I/Sme. The amount of bacteria increased as a result of I/Sme, and the influence of bacteria on the MOC was surpassed only by the soil pH. Climate and clay mineral composition characteristics affected the MOC to a certain extent. Among them, the effect of precipitation change on the MOC is higher than temperature, but it has little effect on soil with a higher weathering degree and CaO content.
英文关键词	climate; mineral-associated organic carbon; clay mineralogy; spatial variation; grassland transects
语种	英语
WOS研究方向	Chemistry ; Engineering ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:001182321000001
来源期刊	APPLIED SCIENCES-BASEL
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/301261
作者单位	Jilin Agricultural University; Chinese Academy of Sciences
推荐引用方式 GB/T 7714	Zhao, Minshuang,Zhang, Zhidan,Li, Meijia,et al. Soil Mineral-Associated Organic Carbon and Its Relationship to Clay Minerals across Grassland Transects in China[J],2024,14(5).
APA	Zhao, Minshuang,Zhang, Zhidan,Li, Meijia,Gao, Chunyang,Zhang, Jinjing,&He, Nianpeng.(2024).Soil Mineral-Associated Organic Carbon and Its Relationship to Clay Minerals across Grassland Transects in China.APPLIED SCIENCES-BASEL,14(5).
MLA	Zhao, Minshuang,et al."Soil Mineral-Associated Organic Carbon and Its Relationship to Clay Minerals across Grassland Transects in China".APPLIED SCIENCES-BASEL 14.5(2024).