Different Responses of Growing Season Ecosystem CO2 Fluxes to Rain Addition in a Desert Ecosystem
文献类型: 外文期刊
第一作者: Xu, Xiaotian
作者: Xu, Xiaotian;Wu, Bo;Bao, Fang;Gao, Ying;Cao, Yanli;Lu, Qi;Xu, Xiaotian;Wu, Bo;Bao, Fang;Gao, Ying;Cao, Yanli;Lu, Qi;Li, Xinle;Gao, Junliang;Xin, Zhiming;Liu, Minghu;Li, Xinle;Gao, Junliang;Xin, Zhiming;Liu, Minghu
作者机构:
关键词: desert ecosystem; rain addition; CO2 fluxes; CO2 sink; nonlinear response
期刊名称:PLANTS-BASEL ( 影响因子:4.5; 五年影响因子:4.8 )
ISSN:
年卷期: 2023 年 12 卷 5 期
页码:
收录情况: SCI
摘要: Desert ecosystem CO2 exchange may play an important role in global carbon cycling. However, it is still not clear how the CO2 fluxes of shrub-dominated desert ecosystems respond to precipitation changes. We performed a 10-year long-term rain addition experiment in a Nitraria tangutorum desert ecosystem in northwestern China. In the growing seasons of 2016 and 2017, with three rain addition treatments (natural precipitation +0%, +50%, and +100% of annual average precipitation), gross ecosystem photosynthesis (GEP), ecosystem respiration (ER), and net ecosystem CO2 exchange (NEE) were measured. The GEP responded nonlinearly and the ER linearly to rain addition. The NEE presented a nonlinear response along the rain addition gradient, with a saturation threshold by rain addition between +50% and +100%. The growing season mean NEE ranged from -2.25 to -5.38 mu mol CO2 m(-2) s(-1), showing net CO2 uptake effect, with significant enhancement (more negative) under the rain addition treatments. Although natural rainfall fluctuated greatly in the growing seasons of 2016 and 2017, reaching 134.8% and 44.0% of the historical average, the NEE values remained stable. Our findings highlight that growing season CO2 sequestration in desert ecosystems will increase against the background of increasing precipitation levels. The different responses of GEP and ER of desert ecosystems under changing precipitation regimes should be considered in global change models.
分类号:
- 相关文献
作者其他论文 更多>>
-
Uptake and distribution of the inorganic components NH4+ and NO3- in PM2.5 by two Chinese conifers
作者:Fang, Jiaxing;Li, Shaoning;Lu, Shaowei;Fang, Jiaxing;Li, Shaoning;Zhao, Na;Xu, Xiaotian;Lu, Shaowei;Fang, Jiaxing;Li, Shaoning;Zhao, Na;Xu, Xiaotian;Lu, Shaowei;Zhou, Yongbin;Zhou, Yongbin
关键词:Atmospheric purification by plants; Particulate matter; One-time aerosol treatment method; 15N tracing; NH4+ and NO3-; Uptake and distribution
-
TLR4 Overexpression Aggravates Bacterial Lipopolysaccharide-Induced Apoptosis via Excessive Autophagy and NF-& kappa;B/MAPK Signaling in Transgenic Mammal Models
作者:Wang, Sutian;Huang, Qiuyan;Yang, Yecheng;Meng, Fanming;Li, Jianhao;Luo, Chenglong;Zhang, Kunli;Song, Xuting;Lu, Qi;Zhao, Duowei;Yao, Yuchang;Lin, Sen;Deng, Shoulong;Deng, Shoulong;Qi, Meiyu;Lian, Zhengxing
关键词:Toll-like receptor 4; transgenic animal model; autophagy; apoptosis; inflammation; oxidative stress
-
Long noncoding RNA ARTA controls ABA response through MYB7 nuclear trafficking in Arabidopsis
作者:Yang, Jun;He, Reqing;Jiang, Liyun;Zhu, Youlin;Wang, Dong;Qu, Zhipeng;Adelson, David L.;Gu, Jinbao;Wang, Zhen-Yu;Zhan, Xiangqiang;Gao, Ying;Li, Sisi
关键词:
-
Multi-valent mRNA vaccines against monkeypox enveloped or mature viron surface antigens demonstrate robust immune response and neutralizing activity
作者:Zhang, Niubing;Cheng, Xiang;Li, Xuan;Zhu, Yilong;Li, Xiao;Mo, Ouyang;Yu, Huiqing;Zhu, Liqi;Zhang, Juan;Kuang, Linlin;Gao, Ying;Liang, Xiaozhen;Wang, Haikun;Hao, Pei;Cao, Ruiyuan;Li, Song;Zhong, Wu;Zhu, Yilong;Zhang, Niubing;Li, Honglin;Zhang, Niubing;Li, Honglin;Cheng, Xiang;Mo, Ouyang;Zhu, Liqi;Zhang, Juan;Gao, Ying;Liang, Xiaozhen;Wang, Haikun;Li, Xuan;Hao, Pei
关键词:monkeypox virus; enveloped and mature viron; multi-valent mRNA vaccines; immune response; neutralizing antibody
-
A gap-free and haplotype-resolved lemon genome provides insights into flavor synthesis and huanglongbing (HLB) tolerance
作者:Bao, Yixue;Zeng, Ziyan;Yao, Wei;Sehrish, Akbar;Chen, Baoshan;Zhang, Xingtan;Zhang, Muqing;Bao, Yixue;Xu, Jianlong;Bao, Yixue;Xu, Jianlong;Zeng, Ziyan;Chen, Xiao;Jiang, Mengwei;Zhang, Xingtan;Wu, Bo;Powell, Charles A.;Zhang, Muqing
关键词:
-
Untargeted metabolomics coupled with chemometrics for flavor analysis of Dahongpao oolong tea beverages under different storage conditions
作者:Wang, Jie-Qiong;Gao, Ying;Wang, Fang;Chen, Jian-Xin;Feng, Zhi-Hui;Yin, Jun-Feng;Xu, Yong-Quan;Wang, Jie-Qiong;Zeng, Liang;Dai, Zhuo-Shun;Dai, Zhuo-Shun
关键词:Oolong tea beverages; Chemometric analysis; Untargeted metabolomic analysis; Flavor quality; Storage conditions
-
Genome-wide characterization of LBD transcription factors in switchgrass (Panicum virgatum L.) and the involvement of PvLBD12 in salt tolerance
作者:Guan, Cong;Wu, Bo;Ma, Shu;Zhang, Jinhong;Zhang, Jinglei;Gao, Run;Jia, Chunlin;Guan, Cong;Wu, Bo;Zhang, Jinhong;Zhang, Jinglei;Gao, Run;Jia, Chunlin;Guan, Cong;Wu, Bo;Zhang, Jinhong;Zhang, Jinglei;Gao, Run;Jia, Chunlin;Ma, Shu;Liu, Xuesi;Wang, Hui;Jiang, Huixin
关键词:Switchgrass; Lateral organ boundaries domain; PvLBD12; Salt stress; Proline; ROS-scavenging enzyme