Arid
DOI10.1111/1365-2435.12854
High night-time humidity and dissolved organic carbon content support rapid decomposition of standing litter in a semi-arid landscape
Wang, Jing1,2; Liu, Lingli1,2; Wang, Xin1; Yang, Sen1,2; Zhang, Beibei1,2; Li, Ping1,2; Qiao, Chunlian1,2; Deng, Meifeng1,2; Liu, Weixing1
通讯作者Liu, Lingli
来源期刊FUNCTIONAL ECOLOGY
ISSN0269-8463
EISSN1365-2435
出版年2017
卷号31期号:8页码:1659-1668
英文摘要

1. Litter in arid and semi-arid ecosystems usually exhibits a prolonged standing dead phase after senescence; however, we know little about the ways in which abiotic and microbial processes affect standing litter decomposition.


2. We conducted a 26-month in situ decomposition experiment in a steppe to investigate the potential mechanisms governing the decomposition of standing litter, and a 192-day laboratory incubation experiment to further explore the impacts of the standing dead stage on the subsequent litter decomposition and soil organic carbon (SOC) formation after the litter falls to the soil surface.


3. Compared with soil surface litter, standing litter has higher dissolved organic carbon (DOC) content. Standing litter also experienced higher night-time relative humidity on its surface, which enhanced litter moisture content. The higher DOC concentration, combined with the greater night-time moisture content, stimulated more microbial activity in standing litter. The decomposition rate (k) of standing litter was 92% higher than that of soil surface litter. Moreover, the standing phase conditioned the litter, leading to more rapid decomposition after the litter fell to the soil surface, and increasing the efficiency with which the litter formed SOC.


4. We conclude that the long-neglected standing phase greatly determines litter decomposition and soil carbon storage in semi-arid regions. Accounting for standing litter decomposition is critical for accurately simulating carbon turnover in arid and semi-arid ecosystems.


英文关键词decomposition dissolved organic carbon microbial activity night-time humidity phospholipid fatty acid soil organic carbon standing litter
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000406977200015
WOS关键词PLANT LITTER ; CO2 EVOLUTION ; WATER-VAPOR ; MATTER ; GRASSLAND ; PATTERNS ; MOISTURE ; LIGHT ; PHOTODEGRADATION ; FLUXES
WOS类目Ecology
WOS研究方向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/2XILL650/199124
作者单位1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China;
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Wang, Jing,Liu, Lingli,Wang, Xin,et al. High night-time humidity and dissolved organic carbon content support rapid decomposition of standing litter in a semi-arid landscape[J]. 中国科学院植物研究所,2017,31(8):1659-1668.
APA Wang, Jing.,Liu, Lingli.,Wang, Xin.,Yang, Sen.,Zhang, Beibei.,...&Liu, Weixing.(2017).High night-time humidity and dissolved organic carbon content support rapid decomposition of standing litter in a semi-arid landscape.FUNCTIONAL ECOLOGY,31(8),1659-1668.
MLA Wang, Jing,et al."High night-time humidity and dissolved organic carbon content support rapid decomposition of standing litter in a semi-arid landscape".FUNCTIONAL ECOLOGY 31.8(2017):1659-1668.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Wang, Jing]的文章
[Liu, Lingli]的文章
[Wang, Xin]的文章
百度学术
百度学术中相似的文章
[Wang, Jing]的文章
[Liu, Lingli]的文章
[Wang, Xin]的文章
必应学术
必应学术中相似的文章
[Wang, Jing]的文章
[Liu, Lingli]的文章
[Wang, Xin]的文章
相关权益政策
暂无数据
收藏/分享

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。