干旱区生态环境知识资源中心(Arid): Belowground net primary productivity and biomass allocation in response to different restoration measures in a salt-alkali-degraded Songnen meadow

Arid

DOI	10.1016/j.ecolind.2021.108038
	Belowground net primary productivity and biomass allocation in response to different restoration measures in a salt-alkali-degraded Songnen meadow
	Tao, Dongxue; Chen, Taiping; Luo, Yan; Wu, Honghui; Wang, Xinyu; Wang, Jing; Gao, Yingzhi
通讯作者	Gao, YZ (corresponding author), Northeast Normal Univ, Inst Grassland Sci, Key Lab Vegetat Ecol, Changchun 130024, Jilin, Peoples R China.
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2021
卷号	130
英文摘要	The understanding of belowground productivity restoration and biomass allocation is especially important for the restoration of salt-alkali-degraded meadows. Despite this, it remains unclear how belowground net primary productivity (BNPP) and biomass allocation respond to combined restoration measures. To assess the effects of different combined restoration measures on BNPP and biomass allocation, a field experiment was carried out in a salt-alkali-degraded meadow from 2012 to 2014. The restoration treatments included: free grazing (FG), enclosure with no-ploughing (E), enclosure with ploughing alone (EP), enclosure with ploughing and N addition (EPF), enclosure with ploughing and mulching (EPM), and enclosure with ploughing plus both N addition and mulching (EPFM). Our results across all three years showed that relative to FG, all the other restoration measures, whether single or combined, significantly increased aboveground net primary productivity (ANPP), BNPP and net primary productivity (NPP). The response of BNPP to different restoration measures was stronger than the ANPP response, resulting in a higher root fraction. The trends were clearer in the EPF, EPM and EPFM treatments, suggesting that more C was allocated to belowground roots with N addition and mulching. The strong increases in NPP and BNPP and belowground biomass allocation in the EPF, EPM and EPFM treatments were mainly due to significant increases in the density of important species (e.g. Chloris virgata and Puccinellia tenuiflora) and soil moisture, and strong decreases in soil pH and EC. Our findings demonstrate that vegetation cover, species richness and productivity (ANPP + BNPP) should be considered as important indicators when evaluating the recovery of severely degraded grassland. Our results further suggest that the combined measures, including enclosure and ploughing plus N addition and mulching, are effective ways to accelerate restoration in salt-alkali-degraded meadows.
英文关键词	Enclosure Ploughing Mulching Nitrogen addition Combining restoration measures Net primary productivity
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000692515900006
WOS关键词	RAIN-USE EFFICIENCY ; GRAZING EXCLUSION ; INNER-MONGOLIA ; ROOT-GROWTH ; GRASSLAND ECOSYSTEMS ; NITROGEN ADDITION ; PLANT DIVERSITY ; TYPICAL STEPPE ; DESERT STEPPE ; LOESS PLATEAU
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
来源机构	中国科学院植物研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362994
作者单位	[Tao, Dongxue; Chen, Taiping; Luo, Yan; Wang, Xinyu; Gao, Yingzhi] Northeast Normal Univ, Inst Grassland Sci, Jilin Songnen Grassland Ecosyst Natl Observat & R, Key Lab Vegetat Ecol,Minist Educ, Changchun 130024, Peoples R China; [Wu, Honghui] Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Minist Agr, Key Lab Crop Nutr & Fertilizat, Beijing 100081, Peoples R China; [Wang, Jing] Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China; [Gao, Yingzhi] Northeast Normal Univ, State Environm Protect Key Lab Wetland Ecol & Veg, Changchun 130117, Peoples R China
推荐引用方式 GB/T 7714	Tao, Dongxue,Chen, Taiping,Luo, Yan,et al. Belowground net primary productivity and biomass allocation in response to different restoration measures in a salt-alkali-degraded Songnen meadow[J]. 中国科学院植物研究所,2021,130.
APA	Tao, Dongxue.,Chen, Taiping.,Luo, Yan.,Wu, Honghui.,Wang, Xinyu.,...&Gao, Yingzhi.(2021).Belowground net primary productivity and biomass allocation in response to different restoration measures in a salt-alkali-degraded Songnen meadow.ECOLOGICAL INDICATORS,130.
MLA	Tao, Dongxue,et al."Belowground net primary productivity and biomass allocation in response to different restoration measures in a salt-alkali-degraded Songnen meadow".ECOLOGICAL INDICATORS 130(2021).