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题名: A Framework for Identifying Plant Species to Be Used as 'Ecological Engineers' for Fixing Soil on Unstable Slopes
作者: Ghestem, Murielle1; Cao, Kunfang2; Ma, Wenzhang3; Rowe, Nick4; Leclerc, Raphaelle5; Gadenne, Clement6; Stokes, Alexia7
刊名: PLOS ONE
关键词: ROOT-REINFORCEMENT ; TREE ROOTS ; STABILITY ANALYSIS ; LAND CONVERSION ; GULLY EROSION ; GROWTH HABIT ; CHINA ; STRENGTH ; REHABILITATION ; RESISTANCE
英文摘要: Major reforestation programs have been initiated on hillsides prone to erosion and landslides in China, but no framework exists to guide managers in the choice of plant species. We developed such a framework based on the suitability of given plant traits for fixing soil on steep slopes in western Yunnan, China. We examined the utility of 55 native and exotic species with regard to the services they provided. We then chose nine species differing in life form. Plant root system architecture, root mechanical and physiological traits were then measured at two adjacent field sites. One site was highly unstable, with severe soil slippage and erosion. The second site had been replanted 8 years previously and appeared to be physically stable. How root traits differed between sites, season, depth in soil and distance from the plant stem were determined. Root system morphology was analysed by considering architectural traits (root angle, depth, diameter and volume) both up-and downslope. Significant differences between all factors were found, depending on species. We estimated the most useful architectural and mechanical traits for physically fixing soil in place. We then combined these results with those concerning root physiological traits, which were used as a proxy for root metabolic activity. Scores were assigned to each species based on traits. No one species possessed a suite of highly desirable traits, therefore mixtures of species should be used on vulnerable slopes. We also propose a conceptual model describing how to position plants on an unstable site, based on root system traits.
出版日期: 2014-08-08
卷号: 9, 期号:8, 页码:e95876
语种: 英语
收录类别: SCI
学科分类: Science & Technology - Other Topics
ISSN号: 1932-6203
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/18371
Appears in Collections:中国科学院东亚植物多样性与生物地理学重点实验室_期刊论文

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作者单位: 1.AgroParis Tech, UMR AMAP, Montpellier, France
2.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Mengla, Yunnan, Peoples R China
3.Kunming Inst Bot, Kunming, Yunnan, Peoples R China
4.CNRS, UMR AMAP, Montpellier, France
5.CNRS, UMR CEFE, Montpellier, France
6.AgroParisTech, Ctr Nancy, Nancy, France
7.INRA, UMR AMAP, F-34060 Montpellier, France

Recommended Citation:
Ghestem,Murielle;Cao,Kunfang;Ma,Wenzhang;Rowe,Nick;Leclerc,Raphaelle;Gadenne,Clement;Stokes,Alexia.A Framework for Identifying Plant Species to Be Used as 'Ecological Engineers' for Fixing Soil on Unstable Slopes,PLOS ONE,2014,9(8):e95876
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文件名: Ghestem-2014-A Framework for Iden.pdf
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