干旱区生态环境知识资源中心(Arid): Humped relationship between herbaceous species richness and biomass reveals a potential for increasing productivity in a temperate desert in Central Asia

Arid

DOI	10.3161/15052249PJE2020.68.1.006
	Humped relationship between herbaceous species richness and biomass reveals a potential for increasing productivity in a temperate desert in Central Asia
	Tao, Ye; Zhou, Xiao-Bing; Zhang, Jing; Yin, Benfeng; Wu, Nan; Zhang, Yuan-Ming
通讯作者	Zhang, Yuan-Ming
来源期刊	POLISH JOURNAL OF ECOLOGY
ISSN	1505-2249
出版年	2020
卷号	68 期号:1 页码:67-83
英文摘要	Species richness-biomass relationship has become a primary focus in plant community ecology. The most commonly reported pattern of species richness and biomass is the humped relationship with a peak in richness at moderate biomass, although negative, positive, or no relationships exited in some cases. However, the richness-biomass relationship in the temperate deserts of Central Asia, where herbaceous species with different life forms are abundant, remains unclear. In this study, 21-214 plots with herbaceous richness and aboveground biomass for each of four plot sizes (0.25, 25, 100, and 400 m(2)) were surveyed in early summer and early autumn in the Gurbantunggut Desert, China. Linear and quadratic regressions were employed to examine the richness-biomass relationship and the location of the richness peak. Significantly unimodal species richness-biomass relationships were observed in all plot sizes and seasons (except for 0.25 m(2) plot in summer). In most cases (9/11), the biomass at the richness peak was higher than half of the biomass range. Meanwhile, the percent of sampling plots where the biomass was less than the peak was considerably greater than 50% (72.7 to 100%) in all cases, and nine of them were more than 95%, indicating strong interspecific coexistence and weak interspecific competition. In conclusion, under the background of increasing precipitation and nitrogen deposition, the humped richness-biomass relationship and the high percent of sampling plots with low biomass jointly revealed a huge potential for increasing productivity, which is crucial for the carbon fixation and ecosystem stability in deserts of Central Asia.
英文关键词	life form interspecific relationship quadratic curve ephemerals ephemeroids ecosystem stability
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000537242100006
WOS关键词	ABOVEGROUND BIOMASS ; DIVERSITY ; COMMUNITIES ; PATTERNS ; SIZE ; PRECIPITATION ; BIODIVERSITY ; GRASSLANDS ; NUTRIENTS ; GRADIENT
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/318911
作者单位	Chinese Acad Sci, Xinjiang Inst Ecol & Geog, CAS Key Lab Biogeog & Bioresource Arid Land, South Beijing Rd 818, Urumqi 830011, Xinjiang, Peoples R China
推荐引用方式 GB/T 7714	Tao, Ye,Zhou, Xiao-Bing,Zhang, Jing,et al. Humped relationship between herbaceous species richness and biomass reveals a potential for increasing productivity in a temperate desert in Central Asia[J]. 中国科学院新疆生态与地理研究所,2020,68(1):67-83.
APA	Tao, Ye,Zhou, Xiao-Bing,Zhang, Jing,Yin, Benfeng,Wu, Nan,&Zhang, Yuan-Ming.(2020).Humped relationship between herbaceous species richness and biomass reveals a potential for increasing productivity in a temperate desert in Central Asia.POLISH JOURNAL OF ECOLOGY,68(1),67-83.
MLA	Tao, Ye,et al."Humped relationship between herbaceous species richness and biomass reveals a potential for increasing productivity in a temperate desert in Central Asia".POLISH JOURNAL OF ECOLOGY 68.1(2020):67-83.