干旱区生态环境知识资源中心(Arid): Distribution Characteristics of Soil Organic Phosphorus Fractions in the Inner Mongolia Steppe

Arid

DOI	10.1007/s42729-020-00305-y
	Distribution Characteristics of Soil Organic Phosphorus Fractions in the Inner Mongolia Steppe
	Zhu, Xiaoya; Zhao, Xiaorong; Lin, Qimei; Alamus; Wang, Hai; Liu, Honglin; Wei, Wenxue; Sun, Xuecheng; Li, Yongtao; Li, Guitong
通讯作者	Zhao, XR
来源期刊	JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION
ISSN	0718-9508
EISSN	0718-9516
出版年	2020
卷号	20 期号:4 页码:2394-2405
英文摘要	Phosphorus (P) is one of the limiting nutrients in Inner Mongolia steppe soil, which seriously affect steppe productivity. Therefore, it is necessary to understand the distribution characteristics of organic P (P-o) fractions and their influencing factors in Inner Mongolia steppe soil and to identify the contribution of P(o)fractions to soil available P (AP) to maintain the sustainable development of the Inner Mongolia steppe by improving the utilization rate of P-o. The contents of soil P(o)fractions such as H2O-extractable P-o(H2O-P-o), NaHCO3-extractable P-o(NaHCO3-P-o), HCl-extractable P-o(HCl-P-o), NaOH-extractable P-o(NaOH-P-o), and phytate P (Phyt-P) were determined in soil samples (0-15 cm) from 15 sampling sites representing three types of grassland (i.e., desert steppe, typical steppe, and meadow steppe) in Inner Mongolia. The influencing factors of the soil P(o)fractions were determined by redundancy analysis (RDA). Soil P(o)content accounted for 61.0% of the total P (TP) on average. NaOH-P(o)was the main fraction of P-o, accounting for 49.1% of P(o)on average; H2O-P(o)content accounted for the least amount of P-o(mean 1.3 mg kg(-1)). H2O-P(o)and HCl-P(o)were not significantly different among the three steppes. The contents of NaHCO3-P(o)increased in the order of desert steppe < typical steppe < meadow steppe, and the trend of NaOH-P(o)and Phyt-P contents were desert steppe < meadow steppe < typical steppe. Pearson correlation analysis showed that NaHCO3-P(o)was positively correlated with AP (r = 0.86,p < 0.01). HCl-P(o)was negatively correlated with AP (r = - 0.56,p < 0.05). NaOH-P(o)and Phyt-P were significantly positively correlated with NaHCO3-extractable inorganic P (NaHCO3-P-i); Phyt-P was also negatively correlated with HCl-extractable P-i(HCl-P-i) (r = - 0.61,p < 0.05). These correlations were mainly caused by differences in steppe types and soil properties caused by climatic conditions, as shown by the result of RDA analysis. Soil P(o)plays an indispensable role in the supply of soil P in the semi-arid steppe of Inner Mongolia, where NaHCO3-P(o)and HCl-P(o)strongly contributed to AP. In addition, NaOH-P(o)and Phyt-P as a part of stable pools are important for providing P to other P pools. P(o)fractions in steppe soils were mainly regulated by climatic conditions and are closely related to the soil organic matter and pH.
英文关键词	Steppe types Climate Vegetation Organic phosphorus fractions
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000553237700001
WOS关键词	NITROGEN-PHOSPHORUS ; GRASSLAND ; POOLS ; TRANSFORMATIONS ; BIOGEOCHEMISTRY ; LIMITATION ; PHOSPHATE ; FORESTS ; CLIMATE ; LAND
WOS类目	Plant Sciences ; Environmental Sciences ; Soil Science
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Agriculture
来源机构	中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325256
作者单位	[Zhu, Xiaoya; Zhao, Xiaorong; Lin, Qimei; Li, Guitong] China Agr Univ, Coll Land Sci & Technol, Beijing 100193, Peoples R China; [Alamus; Wang, Hai; Liu, Honglin] Chinese Acad Agr Sci, Grassland Res Inst, Hohhot 010010, Inner Mongolia, Peoples R China; [Wei, Wenxue] Chinese Acad Sci, Inst Subtrop Agr, Changsha 410125, Hunan, Peoples R China; [Sun, Xuecheng] Huazhong Agr Univ, Coll Resources & Environm, Wuhan 430070, Hubei, Peoples R China; [Li, Yongtao] South China Agr Univ, Coll Resources & Environm, Guangzhou 510642, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Xiaoya,Zhao, Xiaorong,Lin, Qimei,et al. Distribution Characteristics of Soil Organic Phosphorus Fractions in the Inner Mongolia Steppe[J]. 中国农业大学,2020,20(4):2394-2405.
APA	Zhu, Xiaoya.,Zhao, Xiaorong.,Lin, Qimei.,Alamus.,Wang, Hai.,...&Li, Guitong.(2020).Distribution Characteristics of Soil Organic Phosphorus Fractions in the Inner Mongolia Steppe.JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION,20(4),2394-2405.
MLA	Zhu, Xiaoya,et al."Distribution Characteristics of Soil Organic Phosphorus Fractions in the Inner Mongolia Steppe".JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION 20.4(2020):2394-2405.