干旱区生态环境知识资源中心(Arid): Effects of mowing and nitrogen addition on the ecosystem C and N pools in a temperate steppe: A case study from northern China

Arid

DOI	10.1016/j.catena.2019.104332
	Effects of mowing and nitrogen addition on the ecosystem C and N pools in a temperate steppe: A case study from northern China
	Wang, Dong 1; Chi, Zhensheng 1; Yue, Benjiang 2; Huang, Xudong 3; Zhao, Jing 4; Song, Hongquan 5; Yang, Zhongling 1; Miao, Renhui 1; Liu, Yanchun 1; Zhang, Yaojun 1; Miao, Yuan 1; Han, Shijie 1; Liu, Yinzhan 1
通讯作者	Liu, Yinzhan
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2020
卷号	185
英文摘要	Grasslands, mostly in arid and semiarid regions, play an important role in regulating the dynamics of global terrestrial carbon (C) exchange. However, findings about how global changes affect ecosystem C sequestration are conflicting. To understand how land use and climate change affect ecosystem C and nitrogen (N) pools, this study investigated the effects of mowing and fertilizer on the C and N pools of plants and soil, and on the aggregate-associated C and N content, by means of a field manipulating experiment established in August 2012 in a typical steppe. The results showed that mowing significantly decreased the mass and the C and N pools of shoots by 14.3%, 17.3% and 12.1%, respectively. Compared to ambient N treatments, N addition stimulated shoot biomass and litter mass by 28.8% and 77.4%, respectively, but had no affect on root biomass. Simultaneously, N addition increased the plant N content and the N pools, and it decreased the ratio of plant C to N in the shoots, litter and roots. However, neither mowing nor N addition affected the proportion of macroaggregate, microaggregate, < 0.053 mm size class, geometric mean diameter or aggregate-associated C and N contents. Nitrogen deposition under conditions of climate change stimulated plant productivity but had no affect on soil C sequestration in this short-term experiment. Our results indicate that mowing may be beneficial for providing food for large mammals, but it did not affect soil C and N pools in the study region. Our findings suggest that the response of plant mass and C pools is more sensitive than that of soil C sequestration and soil texture to mowing and N deposition in the temperate steppes of the Mongolian Plateau.
英文关键词	Carbon sequestration Nitrogen fertilization Plant C and N content Plant functional group Soil aggregation Temperate grassland
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000504504500027
WOS关键词	SOIL AGGREGATE STABILITY ; BELOW-GROUND C ; ORGANIC-CARBON ; BIOMASS ACCUMULATION ; GRASSLAND MANAGEMENT ; MOUNTAIN GRASSLANDS ; LOESS PLATEAU ; PLANT ; RESPONSES ; RESPIRATION
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
EI主题词	2020-02-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312785
作者单位	1.Henan Univ, Sch Life Sci, Int Joint Res Lab Global Change Ecol, Kaifeng 475004, Henan, Peoples R China; 2.Minist Water Resources, Yellow River Conservancy Commiss, Upper & Middle Yellow River Bur, Xian 710021, Shaanxi, Peoples R China; 3.North China Univ Water Resources & Elect Power, Sch Water Conservancy, Zhengzhou 450046, Henan, Peoples R China; 4.Minist Ecol & Environm, Appraisal Ctr Environm & Engn, Beijing 100012, Peoples R China; 5.Henan Univ, Minist Educ, Key Lab Geospatial Technol Middle & Lower Yellow, Kaifeng 475004, Henan, Peoples R China
推荐引用方式 GB/T 7714	Wang, Dong,Chi, Zhensheng,Yue, Benjiang,et al. Effects of mowing and nitrogen addition on the ecosystem C and N pools in a temperate steppe: A case study from northern China[J],2020,185.
APA	Wang, Dong.,Chi, Zhensheng.,Yue, Benjiang.,Huang, Xudong.,Zhao, Jing.,...&Liu, Yinzhan.(2020).Effects of mowing and nitrogen addition on the ecosystem C and N pools in a temperate steppe: A case study from northern China.CATENA,185.
MLA	Wang, Dong,et al."Effects of mowing and nitrogen addition on the ecosystem C and N pools in a temperate steppe: A case study from northern China".CATENA 185(2020).