气候变化领域集成服务门户(CCPortal): Temporal changes of calcareous soil properties and their effects on cadmium uptake by wheat under wastewater irrigation for over 50 years

CCPortal

DOI	10.1016/j.chemosphere.2020.127971
	Temporal changes of calcareous soil properties and their effects on cadmium uptake by wheat under wastewater irrigation for over 50 years
	Ma, Shuangjin; Hu, Yahu; Zeng, Qiaohong; Xu, Zhihao; Cui, Yihan; Ma, Ying; Su, Jieqiong; Nan, Zhongren
通讯作者	Hu, YH ; Nan, ZR (通讯作者)，Lanzhou Univ, Coll Earth & Environm Sci, 222 South Tianshui Rd, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0045-6535
EISSN	1879-1298
卷号	263
英文摘要	Calcareous soil has a strong buffering capacity for neutralizing acid and stabilizing cadmium (Cd) because of the high calcium carbonate (CaCO3) content. However, it is not clear whether the buffering capacity of calcareous soil can be maintained after long-term wastewater irrigation. We selected a typical area in western China that has been irrigated with wastewater for over 50 years to study the temporal changes of soil properties and their effects on Cd uptake by wheat. The results showed that compared with the background level before the 1960s, the soil pH and CaCO3 content in 2018 were lower by 0.80 units and 35%, respectively, while the soil organic matter (SOM) content, Olsen phosphorus (P) content, and soil total Cd content in 2018 increased by 1.54, 13.05, and 164 times, respectively. Due to the significant decrease in the soil pH and CaCO3, the high load of soil total Cd and electrical conductivity, the low soil clay content, and the coupling of SOM with soil nitrogen and P, the input Cd was activated. Furthermore, the activated Cd was effectively taken up by wheat roots and transported to grains with the assistance of dissolved organic carbon. Our results highlight that long-term wastewater irrigation caused irreversible damage to soil buffering capacity, resulting in the Cd activation and the enhancement of Cd uptake by wheat. (C) 2020 Elsevier Ltd. All rights reserved.
关键词	HEAVY-METAL CONCENTRATIONS TRITICUM-AESTIVUM L.BIOAVAILABILITY ACCUMULATION RESPONSES SYSTEM
英文关键词	Wastewater irrigation; Trace metals; Bioavailability; Calcareous soil; Wheat uptake
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000595802200109
来源期刊	CHEMOSPHERE
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254458
作者单位	[Ma, Shuangjin; Hu, Yahu; Zeng, Qiaohong; Xu, Zhihao; Cui, Yihan; Ma, Ying; Nan, Zhongren] Lanzhou Univ, Coll Earth & Environm Sci, MOE Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China; [Ma, Shuangjin; Hu, Yahu; Zeng, Qiaohong; Xu, Zhihao; Cui, Yihan; Ma, Ying; Nan, Zhongren] Lanzhou Univ, Coll Earth & Environm Sci, Gansu Key Lab Environm Pollut Predict & Control, Lanzhou 730000, Peoples R China; [Su, Jieqiong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Shapotou Desert Res & Expt Stn, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Ma, Shuangjin,Hu, Yahu,Zeng, Qiaohong,et al. Temporal changes of calcareous soil properties and their effects on cadmium uptake by wheat under wastewater irrigation for over 50 years[J]. 中国科学院西北生态环境资源研究院,2021,263.
APA	Ma, Shuangjin.,Hu, Yahu.,Zeng, Qiaohong.,Xu, Zhihao.,Cui, Yihan.,...&Nan, Zhongren.(2021).Temporal changes of calcareous soil properties and their effects on cadmium uptake by wheat under wastewater irrigation for over 50 years.CHEMOSPHERE,263.
MLA	Ma, Shuangjin,et al."Temporal changes of calcareous soil properties and their effects on cadmium uptake by wheat under wastewater irrigation for over 50 years".CHEMOSPHERE 263(2021).