NDLI: Persistence of four dominant psammophyte species in central Inner Mongolia of China under continual drought

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Persistence of four dominant psammophyte species in central Inner Mongolia of China under continual drought

Detecting soil salinity with arid fraction integrated index and salinity index in feature space using Landsat TM imagery

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Optimization of reed-specific degrading bacteria by response surfaces for remediation of crude oil-polluted soil in Xinjiang, China

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Journal of Arid Land : Volume 5, Issue 1, March 2013

Persistence of four dominant psammophyte species in central Inner Mongolia of China under continual drought

Content Provider	Springer Nature Link
Author	Luo, GePing Shimizu, Hideyuki Zheng, YuanRun Chen, Xi An, Ping Yu, Yi Yu, YunJiang Jiang, LianHe Gao, Yong Feng, XianWei
Copyright Year	2013
Abstract	Clarifying the persistence time of seedlings of dominant species under continual drought will help us understand responses of ecosystems to global climate change and improve revegetation efforts. Drought tolerance of four dominant psammophytic shrub species occurring in different environments was studied in the semi-arid areas of Inner Mongolian grasslands. Seedlings of Hedysarum laeve, Caragana korshinskii, Artemisia sphaerocephala and Artemisia ordosica were grown under four air temperature regimes (night/day: 12.5/22.5°C, 15/25°C, 17.5/27.5°C and 20/30°C) within climate (air temperature and humidity) controlled, naturally lit glasshouses with a night/day relative humidity of 70%/50%. Pots were watered to field capacity for each temperature treatment. Soil water condition was monitored by weighting each pot every day using an electronic balance. Date of seedling death for each treatment was recorded and the dead plants were harvested. Plant dry weights were determined after oven drying at 80°C for 3 days. Two Artemisia species had higher growth rates than H. laeve and C. korshinskii, and the growth of all four species increased with increasing temperatures. The two Artemisia species had the highest leaf biomass increment, followed by C. korshinskii, and then H. laeve. Shoot biomass increment was higher for A. ordosica and C. korshinskii, intermediate for A. sphaerocephala and lowest for H. laeve. C. korshinskii had the highest root biomass increment. The final soil water content at death for all four species varied from 1% to 2%. C. korshinskii, A. sphaerocephala, H. laeve and A. ordosica survived for 25–43, 24–41, 26–41, and 24–37 days without watering, respectively. C. korshinskii, A. sphaerocephala, H. Laeve, and A. ordosica seedlings survived longer at the lowest temperatures (12.5/22.5°C) than at the highest temperatures (20/30°C) by 18, 17, 15 and 13 days, respectively. Increased climatic temperatures induce the death of seedlings in years with long intervals between rainfall events. The adaptation of seedlings to droughts should be emphasized in revegetation efforts in the Ordos Plateau, Inner Mongolia.
Starting Page	331
Ending Page	339
Page Count	9
File Format	PDF
ISSN	16746767
Journal	Journal of Arid Land
Volume Number	5
Issue Number	3
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-04-27
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	persistence time drought semi-arid area Sustainable Development Physical Geography temperature biomass allocation Plant Ecology
Content Type	Text
Resource Type	Article
Subject	Earth-Surface Processes Water Science and Technology Management, Monitoring, Policy and Law

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Persistence of four dominant psammophyte species in central Inner Mongolia of China under continual drought

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