Effects of spring fire and slope on the aboveground biomass, and organic C and N dynamics in a semi-arid grassland of northern China

doi:10.1007/s40333-019-0052-3

CORC > 植物研究所 > 中国科学院植物研究所 > 植被与环境变化国家重点实验室

	Effects of spring fire and slope on the aboveground biomass, and organic C and N dynamics in a semi-arid grassland of northern China
	Zhao, Xiang ; Hu, Shuya 3; Dong, Jie 1; Ren, Min ; Zhang, Xiaolin ; Dong, Kuanhu ; Wang, Changhui 3
刊名	JOURNAL OF ARID LAND
	2019
卷号	11 期号:2 页码:267-279
关键词	aboveground biomass plant functional group spring fire slope position N content organic C content semi-arid grassland
ISSN号	1674-6767
DOI	10.1007/s40333-019-0052-3
文献子类	Article
英文摘要	The aboveground primary production is a major source of carbon (C) and nitrogen (N) pool and plays an important role in regulating the response of ecosystem and nutrient cycling to natural and anthropogenic disturbances. To explore the mechanisms underlying the effect of spring fire and topography on the aboveground biomass (AGB) and the soil C and N pool, we conducted a field experiment between April 2014 and August 2016 in a semi-arid grassland of northern China to examine the effects of slope and spring fire, and their potential interactions on the AGB and organic C and total N contents in different plant functional groups (C-3 grasses, C-4 grasses, forbs, Artemisia frigida plants, total grasses and total plants). The dynamics of AGB and the contents of organic C and N in the plants were examined in the burned and unburned plots on different slope positions (upper and lower). There were differences in the total AGB of all plants between the two slope positions. The AGB of grasses was higher on the lower slope than on the upper slope in July. On the lower slope, spring fire marginally or significantly increased the AGB of C-3 grasses, forbs, total grasses and total plants in June and August, but decreased the AGB of C-4 grasses and A. frigida plants from June to August. On the upper slope, however, spring fire significantly increased the AGB of forbs in June, the AGB of C-3 grasses and total grasses in July, and the AGB of forbs and C-4 grasses in August. Spring fire exhibited no significant effect on the total AGB of all plants on the lower and upper slopes in 2014 and 2015. In 2016, the total AGB in the burned plots showed a decreasing trend after fire burning compared with the unburned plots. The different plant functional groups had different responses to slope positions in terms of organic C and N contents in the plants. The lower and upper slopes differed with respect to the organic C and N contents of C-3 grasses, C-4 grasses, total grasses, forbs, A. frigida plants and total plants in different growing months. Slope position and spring fire significantly interacted to affect the AGB and organic C and N contents of C-4 grasses and A. frigida plants. We observed the AGB and organic C and N contents in the plants in a temporal synchronized pattern. Spring fire affected the functional AGB on different slope positions, likely by altering the organic C and N contents and, therefore, it is an important process for C and N cycling in the semi-arid natural grasslands. The findings of this study would facilitate the simulation of ecosystem C and N cycling in the semi-arid grasslands in northern China.
学科主题	Environmental Sciences
电子版国际标准刊号	2194-7783
出版地	HEIDELBERG
WOS关键词	SPECIES COMPOSITION ; POPULATION VIABILITY ; MICROBIAL BIOMASS ; PLANT DIVERSITY ; NITROGEN-FERTILIZATION ; SPATIAL HETEROGENEITY ; TOPOGRAPHIC POSITION ; TALLGRASS PRAIRIE ; CARBON STORAGE ; NATIONAL-PARK
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000465023800009
资助机构	National Key Basic Research and Development Program of ChinaNational Basic Research Program of China [2016YFC0500703] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31572452, 41573063, 31870438]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/19878]
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Beijing Inst Sci & Technol Informat, Beijing 100044, Peoples R China 3.Shanxi Agr Univ, Coll Anim Sci & Vet Med, Taigu 030801, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Xiang,Hu, Shuya,Dong, Jie,et al. Effects of spring fire and slope on the aboveground biomass, and organic C and N dynamics in a semi-arid grassland of northern China[J]. JOURNAL OF ARID LAND,2019,11(2):267-279.
APA	Zhao, Xiang.,Hu, Shuya.,Dong, Jie.,Ren, Min.,Zhang, Xiaolin.,...&Wang, Changhui.(2019).Effects of spring fire and slope on the aboveground biomass, and organic C and N dynamics in a semi-arid grassland of northern China.JOURNAL OF ARID LAND,11(2),267-279.
MLA	Zhao, Xiang,et al."Effects of spring fire and slope on the aboveground biomass, and organic C and N dynamics in a semi-arid grassland of northern China".JOURNAL OF ARID LAND 11.2(2019):267-279.