干旱区生态环境知识资源中心(Arid): Storage of soil phytoliths and phytolith-occluded carbon along a precipitation gradient in grasslands of northern China

Arid

DOI	10.1016/j.geoderma.2020.114200
	Storage of soil phytoliths and phytolith-occluded carbon along a precipitation gradient in grasslands of northern China
	Zhang, Xiaodong 1; Song, Zhaoliang 1; Hao, Qian 1; Yu, Changxun 2; Liu, Hongyan 3; Chen, Chunmei 1; Muller, Karin 4; Wang, Hailong 5,6
通讯作者	Song, Zhaoliang
来源期刊	GEODERMA
ISSN	0016-7061
EISSN	1872-6259
出版年	2020
卷号	364
英文摘要	Climatic factors including mean annual precipitation (MAP) significantly influence the carbon (C) cycle in terrestrial ecosystems and Earth overall. Phytolith-occluded carbon (PhytOC) is an important C sequestration mechanism and as such plays a vital role in global long-term C sequestration. Understanding the spatial variability in the storage of soil phytoliths and PhytOC and its relationship with climate is critical for evaluating the impact of global climate change on terrestrial ecosystem functions. However, little is known about the responses of soil phytoliths and PhytOC to MAP in grassland ecosystems. This study sampled soil from 24 natural, semi-arid steppe sites along a 2,500 km transect with a precipitation gradient of 243-481 mm yr(-1) in northern China. We investigated the influence of precipitation on the spatial distributions of soil phytoliths and PhytOC storage. Storage of soil phytoliths in bulk soil (0-100 cm depth) ranged from 21.3 +/- 0.4 to 88.4 +/- 20.3 t ha(-1) along the precipitation gradient. Amounts of soil phytoliths and PhytOC storage were significantly and positively correlated with MAP. Multiple regression analysis revealed that phytolith storage in bulk soil was best predicted by MAP (R = 0.5) and soil organic carbon (SOC, R = 0.4), with these two variables accounting for about 58% of the total variation observed. Considering the forecasted increase in MAP in the Inner Mongolian steppe due to climate change, and the strong influence of MAP on the annual net primary productivity (ANPP) and related soil PhytOC input from litter decomposition in this region, we expect that ecosystem primary productivity will increase from deserts to meadow steppe and thereby promote soil PhytOC storage. These findings have important implications for understanding the dynamics of soil phytoliths, and predicting the impacts of global climate change on ecosystem functions and management practices in the East Asian steppe ecosystems.
英文关键词	Soil phytolith Mean annual precipitation Stability Mongolian Plateau
类型	Article
语种	英语
国家	Peoples R China ; Sweden ; New Zealand
收录类别	SCI-E
WOS记录号	WOS:000517855200012
WOS关键词	SURFACE-PROPERTIES ; TERRESTRIAL ECOSYSTEMS ; BIOGEOCHEMICAL CYCLES ; CLIMATE VARIABILITY ; USE EFFICIENCY ; PLANT-IMPACT ; GREAT-PLAINS ; LAND-USE ; SEQUESTRATION ; NITROGEN
WOS类目	Soil Science
WOS研究方向	Agriculture
来源机构	北京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314588
作者单位	1.Tianjin Univ, Inst Surface Earth Syst Sci, 92 Weijin Rd Nankai Dist, Tianjin 300072, Peoples R China; 2.Linnaeus Univ, Dept Biol & Environm Sci, SE-39182 Kalmar, Sweden; 3.Peking Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China; 4.Ruakura Res Ctr, NZ Inst Plant & Food Res Ltd, Private Bag 3123, Hamilton, New Zealand; 5.Foshan Univ, Sch Environm & Chem Engn, Foshan 528000, Guangdong, Peoples R China; 6.Zhejiang A&F Univ, Sch Environm & Resource Sci, Hangzhou 311300, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xiaodong,Song, Zhaoliang,Hao, Qian,et al. Storage of soil phytoliths and phytolith-occluded carbon along a precipitation gradient in grasslands of northern China[J]. 北京大学,2020,364.
APA	Zhang, Xiaodong.,Song, Zhaoliang.,Hao, Qian.,Yu, Changxun.,Liu, Hongyan.,...&Wang, Hailong.(2020).Storage of soil phytoliths and phytolith-occluded carbon along a precipitation gradient in grasslands of northern China.GEODERMA,364.
MLA	Zhang, Xiaodong,et al."Storage of soil phytoliths and phytolith-occluded carbon along a precipitation gradient in grasslands of northern China".GEODERMA 364(2020).