中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 植物研究所
  3. 中国科学院植物研究所
  4. 植被与环境变化国家重点实验室
Regional-scale patterns of soil microbes and nematodes across grasslands on the Mongolian plateau: relationships with climate, soil, and plants

文献类型：期刊论文

作者Chen, Dima; Cheng, Junhui; Chu, Pengfei; Hu, Shuijin1; Xie, Yichun4; Tuvshintogtokh, Indree3; Bai, Yongfei
刊名ECOGRAPHY
出版日期2015
卷号38期号:6页码:622-631
ISSN号0906-7590
DOI10.1111/ecog.01226
文献子类Article
英文摘要Belowground communities exert major controls over the carbon and nitrogen balances of terrestrial ecosystems by regulating decomposition and nutrient availability for plants. Yet little is known about the patterns of belowground communities and their relationships with environmental factors, particularly at the regional scale where multiple environmental gradients co-vary. Here, we describe the patterns of belowground communities (microbes and nematodes) and their relationships with environmental factors based on two parallel studies: a field survey with two regional-scale transects across the Mongolia plateau and a water-addition experiment in a typical steppe. In the field survey, soils and plants were collected across two large-scale transects (a 2000-km east-west transect and a 900-km south-north transect). At the regional-scale, the variations in soil microbes (e.g. bacterial PLFA, fungal PLFA, and F/B ratio) were mainly explained by precipitation and soil factors. In contrast, the variation in soil nematodes (e.g. density of trophic groups and the bacterial-feeding/fungal-feeding nematode ratio) were primarily explained by precipitation. These variations of microbe or nematode variables explained by environmental factors at regional scale were derived from different vegetation types. Along the gradient from nutrient-poor to nutrient-rich vegetation types, the total variation in soil microbes explained by precipitation increased and that explained by plant and soil decreased, while the opposite was true for soil nematodes. Experimental water addition, which increased rainfall by 30% during the growing season, increased biomass or density of belowground communities, with the nematodes being more responsive than the microbes. The different responses of soil microbial and nematode communities to environmental gradients at the regional scale likely reflect their different adaptations to climate, soil nutrients, and plants. Our findings suggest that the soil nematode and microbial communities are strongly controlled by bottom-up effects of precipitation alone or in combination with soil conditions.
学科主题Biodiversity Conservation ; Ecology
出版地HOBOKEN
电子版国际标准刊号1600-0587
WOS关键词COMMUNITY STRUCTURE ; LAND-USE ; FUNGAL COMMUNITIES ; WATER AVAILABILITY ; PH GRADIENT ; BOTTOM-UP ; FOOD-WEB ; DIVERSITY ; BACTERIAL ; PRODUCTIVITY
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
语种英语
WOS记录号WOS:000355684500008
出版者WILEY
资助机构Natural Science Foundation of China [31030013, 31320103916, 31100335] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA05050400] ; Knowledge Innovation Project of the Chinese Academy of Sciences [KSCX2-EW-Z-5]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/25859]  
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.Mongolian Acad Sci, Inst Bot, Dept Vegetat Ecol, Ulaanbaatar, Mongolia
3.Eastern Michigan Univ, Dept Geog & Geol, Ypsilanti, MI 48197 USA
4.N Carolina State Univ, Dept Plant Pathol, Raleigh, NC 27695 USA
推荐引用方式
GB/T 7714		 Chen, Dima,Cheng, Junhui,Chu, Pengfei,et al. Regional-scale patterns of soil microbes and nematodes across grasslands on the Mongolian plateau: relationships with climate, soil, and plants[J]. ECOGRAPHY,2015,38(6):622-631.
APA Chen, Dima.,Cheng, Junhui.,Chu, Pengfei.,Hu, Shuijin.,Xie, Yichun.,...&Bai, Yongfei.(2015).Regional-scale patterns of soil microbes and nematodes across grasslands on the Mongolian plateau: relationships with climate, soil, and plants.ECOGRAPHY,38(6),622-631.
MLA Chen, Dima,et al."Regional-scale patterns of soil microbes and nematodes across grasslands on the Mongolian plateau: relationships with climate, soil, and plants".ECOGRAPHY 38.6(2015):622-631.

入库方式： OAI收割

来源：植物研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。