干旱区生态环境知识资源中心(Arid): Characteristics of soil seed banks at different geomorphic positions within the longitudinal sand dunes of the Gurbantunggut Desert, China

Arid

	Characteristics of soil seed banks at different geomorphic positions within the longitudinal sand dunes of the Gurbantunggut Desert, China
	Jia Fengqin; Tiyip Tashpolat; Wu Nan; Tian Changyan; Zhang Yuanming
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2017
卷号	9 期号:3 页码:355-367
英文摘要	Understanding the characteristics of soil seed banks in sand dunes is crucial to stabilize the dune systems and maintain the plant populations in deserts. In this study, we conducted a survey investigation in the field and a seed germination experiment in the laboratory to explore the characteristics of soil seed banks at various geomorphic positions of longitudinal sand dunes in the Gurbantunggut Desert, China. Totally, 17 plant species belonging to 17 genera and 9 families were identified in soil seed banks, and 35 plant species belonging to 34 genera and 17 families were identified in aboveground vegetation. Plant species richness in soil seed banks decreased with increasing soil depth. The highest species richness was presented in the upper slope of the windward slope and the lowest species richness was presented in the base of the windward slope. There was no significant difference in seed density of soil seed banks among the examined seven geomorphic positions. The highest seed density occurred in the lower slope of the leeward slope while the lowest occurred in the crest. Moreover, seed density decreased with increasing soil depth, being the highest in the upper soil layer (0-2 cm). For both soil seed banks and aboveground vegetation, there was no significant difference in Simpson's diversity index among the seven geomorphic positions; however, Shannon-Wiener diversity index and Pielou's evenness index showed significant differences among the seven geomorphic positions. Those results showed that although there was no significant difference in seed density of soil seed banks among the seven geomorphic positions, the geomorphic positions significantly affected the species richness, diversity and distribution of soil seed banks. Therefore, understanding the characteristics of soil seed banks at different geomorphic positions of sand dunes is essential to vegetation restoration or reestablishment. Furthermore, the Jaccard's similarity coefficients of plant species between soil seed banks and aboveground vegetation at the seven geomorphic positions were low, suggesting that vegetation restoration or reestablishment processes should be promoted through adding seeds to surface layers.
英文关键词	soil seed banks geomorphic position seed density species diversity sand dunes Gurbantunggut Desert
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:5983405
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335798
作者单位	Jia Fengqin, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Key Laboratory of Biogeography and Bioresources in Arid Land, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China.; Wu Nan, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Key Laboratory of Biogeography and Bioresources in Arid Land, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China.; Tian Changyan, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Key Laboratory of Biogeography and Bioresources in Arid Land, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China.; Zhang Yuanming, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Key Laboratory of Biogeography and Bioresources in Arid Land, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China.; Tiyip Tashpolat, Key Laboratory of Oasis Ecology/Resources and Environment Department, Xinjiang University, Urumqi, Xinjiang 830046, China.
推荐引用方式 GB/T 7714	Jia Fengqin,Tiyip Tashpolat,Wu Nan,et al. Characteristics of soil seed banks at different geomorphic positions within the longitudinal sand dunes of the Gurbantunggut Desert, China[J],2017,9(3):355-367.
APA	Jia Fengqin,Tiyip Tashpolat,Wu Nan,Tian Changyan,&Zhang Yuanming.(2017).Characteristics of soil seed banks at different geomorphic positions within the longitudinal sand dunes of the Gurbantunggut Desert, China.Journal of Arid Land,9(3),355-367.
MLA	Jia Fengqin,et al."Characteristics of soil seed banks at different geomorphic positions within the longitudinal sand dunes of the Gurbantunggut Desert, China".Journal of Arid Land 9.3(2017):355-367.