Evaluating the response of δ13C in Haloxylon ammodendron, a dominant C4 species in Asian desert ecosystems, to water and nitrogen addition as well as the availability of its δ13C as an indicator of water use efficiency
Zixun Chen,Xuejun Liu,Xiaoqing Cui,Yaowen Han,Guoan Wang,and Jiazhu Li
Zixun Chen
Key Lab of Plant–Soil Interaction, College of Resources and
Environmental Sciences, China Agricultural University, Beijing, 100193,
China
Beijing Key Laboratory of Farmland Soil Pollution Prevention and
Remediation, Department of Environmental Sciences and Engineering, College
of Resources and Environmental Sciences, China Agricultural University,
Beijing, 100193, China
Xuejun Liu
Beijing Key Laboratory of Farmland Soil Pollution Prevention and
Remediation, Department of Environmental Sciences and Engineering, College
of Resources and Environmental Sciences, China Agricultural University,
Beijing, 100193, China
Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences,
Ürümqi, 83011, China
Xiaoqing Cui
Beijing Key Laboratory of Farmland Soil Pollution Prevention and
Remediation, Department of Environmental Sciences and Engineering, College
of Resources and Environmental Sciences, China Agricultural University,
Beijing, 100193, China
Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences,
Ürümqi, 83011, China
Yaowen Han
Beijing Key Laboratory of Farmland Soil Pollution Prevention and
Remediation, Department of Environmental Sciences and Engineering, College
of Resources and Environmental Sciences, China Agricultural University,
Beijing, 100193, China
Key Lab of Plant–Soil Interaction, College of Resources and
Environmental Sciences, China Agricultural University, Beijing, 100193,
China
Beijing Key Laboratory of Farmland Soil Pollution Prevention and
Remediation, Department of Environmental Sciences and Engineering, College
of Resources and Environmental Sciences, China Agricultural University,
Beijing, 100193, China
δ13C in plants is a sensitive long-term indicator of physiological acclimatization. The present study suggests that precipitation change and increasing atmospheric N deposition have little impact on δ13C of H. ammodendron, a dominant plant in central Asian deserts, but affect its gas exchange. In addition, this study shows that δ13C of H. ammodendron could not indicate its water use efficiency (WUE), suggesting that whether δ13C of C4 plants indicates WUE is species-specific.
δ13C in plants is a sensitive long-term indicator of physiological acclimatization. The present...
