干旱区生态环境知识资源中心(Arid): Climate and land-use effects on hydrological and vegetation signals during the last three millennia: Evidence from sedimentary leaf waxes in southwestern Morocco

Arid

DOI	10.1177/0959683620988053
	Climate and land-use effects on hydrological and vegetation signals during the last three millennia: Evidence from sedimentary leaf waxes in southwestern Morocco
	Baqloul, Asmae; Schefuss, Enno; Kolling, Martin; Dupont, Lydie; Groeneveld, Jeroen; Zhao, Xueqin; Reddad, Hanane; Bouchaou, Lhoussaine; Bouimetarhan, Ilham
通讯作者	Baqloul, A (corresponding author), Ibn Zohr Univ Agadir, Fac Sci, Appl Geol & Geoenvironm Lab, BP 8106, Agadir 80000, Morocco.
来源期刊	HOLOCENE
ISSN	0959-6836
EISSN	1477-0911
出版年	2021
卷号	31 期号:5 页码:699-708
英文摘要	The southwest of Morocco is considered to be an area of refuge within the Mediterranean region, hosting the endemic tropical Argan tree. This region is presently subject to severe droughts, desertification and land degradation, and likely facing increased climate variability and socio-economic stress in the future. Here, we use the stable hydrogen and carbon isotope composition (delta D and delta C-13) of plant-waxes in a high-resolution marine sediment core (GeoB8601-3) collected off Cape Ghir in southwestern Morocco, in combination with published data on pollen and XRF element ratios from the same archive. We aim to reconstruct the hydroclimate and vegetation history during the last 3000 years. Stable carbon isotope compositions of leaf waxes (delta C-13(wax)) show that natural vegetation in southwestern Morocco consists of C-3 plants. Minor variations in delta C-13(wax) were positively correlated to changes in stable hydrogen isotope compositions of leaf waxes (delta D-wax) before 700 CE. Changes in rainfall amounts and water use efficiency indicate a clear vegetation response to precipitation changes and thus to climate forcing. After 700 CE, delta D-wax and delta C-13(wax) became de-coupled suggesting that the plant wax discharge and their isotope signals were no longer solely controlled by climate; the waxes likely mainly originate from the lowlands and carry an enriched (dry) delta D signal but a depleted C-13 signature. The depletion of delta C-13(wax) correlates with the increase of Argan pollen concentration in the record. The period between similar to 700 and 900 CE coincides with the Arabization of Morocco which had an impact on the demographic composition of the country leading to new agricultural habits and, as a result, on the land-use triggering a higher erosion of lowland material by the Souss River.
英文关键词	Argan tree carbon isotopes climate change human land-use Hydrogen isotopes southwestern Morocco
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000637913200001
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350474
作者单位	[Baqloul, Asmae; Bouchaou, Lhoussaine; Bouimetarhan, Ilham] Ibn Zohr Univ Agadir, Fac Sci, Appl Geol & Geoenvironm Lab, BP 8106, Agadir 80000, Morocco; [Schefuss, Enno; Kolling, Martin; Dupont, Lydie; Zhao, Xueqin] Univ Bremen, MARUM Ctr Marine Environm Sci, Bremen, Germany; [Groeneveld, Jeroen] Helmholtz Ctr Polar & Marine Res, Alfred Wegener Inst, Bremerhaven, Germany; [Reddad, Hanane] Univ Sultan Moulay Slimane Beni Mellal, Fac Lettres & Sci Humaines, Beni Mellal, Morocco; [Bouchaou, Lhoussaine] Mohammed VI Polytech Univ, Int Water Res Inst, Ben Guerir, Morocco; [Bouimetarhan, Ilham] Ibn Zohr Univ Agadir, CUAM, Fac Sci Appl, Agadir, Morocco
推荐引用方式 GB/T 7714	Baqloul, Asmae,Schefuss, Enno,Kolling, Martin,et al. Climate and land-use effects on hydrological and vegetation signals during the last three millennia: Evidence from sedimentary leaf waxes in southwestern Morocco[J],2021,31(5):699-708.
APA	Baqloul, Asmae.,Schefuss, Enno.,Kolling, Martin.,Dupont, Lydie.,Groeneveld, Jeroen.,...&Bouimetarhan, Ilham.(2021).Climate and land-use effects on hydrological and vegetation signals during the last three millennia: Evidence from sedimentary leaf waxes in southwestern Morocco.HOLOCENE,31(5),699-708.
MLA	Baqloul, Asmae,et al."Climate and land-use effects on hydrological and vegetation signals during the last three millennia: Evidence from sedimentary leaf waxes in southwestern Morocco".HOLOCENE 31.5(2021):699-708.