气候变化领域集成服务门户(CCPortal): Long-term effects of gravel-sand mulch thickness on soil microbes and enzyme activities in semi-arid Loess Plateau, Northwest China

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DOI	10.3724/SP.J.1226.2021.21012
	Long-term effects of gravel-sand mulch thickness on soil microbes and enzyme activities in semi-arid Loess Plateau, Northwest China
	Zhao, ChengZheng; Wang, YaJun; Qiu, Yang; Xie, ZhongKui; Zhang, YuBao
通讯作者	Wang, YJ (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, 320 West Donggang Rd, Lanzhou 730000, Gansu, Peoples R China.
发表日期	2021
ISSN	1674-3822
起始页码	510
结束页码	521
卷号	13 期号:6
英文摘要	In semi-arid areas of China, gravel and sand mulch is a farming technique with a long history. In this study, a sample survey was conducted on long term gravel sand mulch observational fields in the Northwest Loess Plateau to determine the effects of long term mulch on soil microbial and soil enzyme activities. We found that after long term gravel-sand mulch, compared with bare ground, soil organic matter, alkali nitrogen, conductivity decreased, while pH and soil moisture increased. Urease, saccharase and catalase decreased with increased mulch thickness, while alkaline phosphatase was reversed. The results of Illumina MiSeq sequencing shows that after gravel-sand mulch, the bacterial and fungal community structure was different from bare land, and the diversity was reduced. Compared with bare land, the bacteria Proteobacteria and Acidobacteria abundance increased with increased thickness, and Actinobacteria was opposite. Also, at the fungal genus level, Fusarium abundance was significantly reduced, and Remersonia was significantly increased, compared with bare land. Redundancy analysis (RDA) revealed that soil environmental factors were important drivers of bacterial community changes. Overall, this study revealed some of the reasons for soil degradation after long term gravel-sand mulch. Therefore, it is recommended that the addition of exogenous soil nutrients after long term gravel-sand can help improve soil quality.
关键词	GREENHOUSE-GAS EMISSIONS WATER-USE EFFICIENCY BACTERIAL EVAPORATION DIVERSITY REGION TEMPERATURE SEQUENCES BIOCHAR YIELD
英文关键词	gravel and sand mulch; soil microbes; soil enzyme activities; soil degradation; soil quality
语种	英语
WOS研究方向	Physical Geography
WOS类目	Geography, Physical
WOS记录号	WOS:000741250000005
来源期刊	SCIENCES IN COLD AND ARID REGIONS
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/253813
作者单位	[Zhao, ChengZheng; Wang, YaJun; Qiu, Yang; Xie, ZhongKui; Zhang, YuBao] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, 320 West Donggang Rd, Lanzhou 730000, Gansu, Peoples R China; [Zhao, ChengZheng] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhao, ChengZheng,Wang, YaJun,Qiu, Yang,et al. Long-term effects of gravel-sand mulch thickness on soil microbes and enzyme activities in semi-arid Loess Plateau, Northwest China[J]. 中国科学院西北生态环境资源研究院,2021,13(6).
APA	Zhao, ChengZheng,Wang, YaJun,Qiu, Yang,Xie, ZhongKui,&Zhang, YuBao.(2021).Long-term effects of gravel-sand mulch thickness on soil microbes and enzyme activities in semi-arid Loess Plateau, Northwest China.SCIENCES IN COLD AND ARID REGIONS,13(6).
MLA	Zhao, ChengZheng,et al."Long-term effects of gravel-sand mulch thickness on soil microbes and enzyme activities in semi-arid Loess Plateau, Northwest China".SCIENCES IN COLD AND ARID REGIONS 13.6(2021).