干旱区生态环境知识资源中心(Arid): 不同坡位对毛乌素沙地油蒿根区土壤水分及生理指标的影响

Arid

	不同坡位对毛乌素沙地油蒿根区土壤水分及生理指标的影响
其他题名	Effects of Different Slope Positions on Soil Moisture and Physiological Indicators of Artemisia ordosica Root Zone in the Mu Us Sandy Land
	孟文婷; 王甜甜; 赵学琳; 朱林
来源期刊	生物技术通报
ISSN	1002-5464
出版年	2019
卷号	35 期号:12 页码:57-63
中文摘要	探究不同坡位油蒿灌丛根区土壤水分变化及油蒿的生理指标的变化,为揭示沙生植物抗旱生理生化机制以及毛乌素沙生植物的保护和修复提供一定的理论依据,为未来环境变化下荒漠植物群落的响应提供理论参考。在2018年于地处宁夏盐池的毛乌素沙地,以自然条件下生长的油蒿为试验材料,测定不同坡位油蒿(坡底、坡中、坡顶)的0-300 cm土层土壤体积含水量(SWC_(0-300))、细胞膜透性、丙二醛含量和抗氧化系统酶。结果表明,土壤含水量随坡位的升高依次降低,0-300 cm土层土壤含水量总体呈现坡中 >坡底 >坡顶。随着坡位的升高,油蒿的细胞膜透性呈先降低后增加的趋势,超氧化物歧化酶(Superoxide dismutase, SOD)活性呈先升高后降低的趋势。丙二醛(Malondialdehyde, MDA )含量随坡位的升高在7月、8月呈先升高后降低的趋势,但在9月和10月随坡位的升高而降低。过氧化物酶(Peroxidase, POD)活性在7月、8月随坡位的升高而降低,但在9月和10月随坡位的升高呈先降低后增加的趋势。细胞膜透性与坡位的抗旱性关系最密切。油蒿在坡中土壤含水量最大,有较强的抗干旱能力。
英文摘要	This work aims to explore the variations in physiological indexes and soil moisture of Artemisia ordosica shrubs on different slopes for providing a theoretical basis and references in revealing the physiological and biochemical mechanisms of drought resistance of sandy plants,in the protection and restoration of sandy plants and in the response of desert plant communities under future environmental changes. Soil water content (SWC_(0-300)), cell membrane permeability, malondialdehyde (MDA ) and antioxidant enzymes of Artemisia ordosica on different slopes (bottom, middle and top of slopes ) of total 0-300 cm soil layer in the Mu Us Sandy Land in Yanchi, Ningxia in 2018 were measured. The results showed that soil water content decreased with the increase of slope position and soil moisture content in 0-300 cm soil layer presented as middle slope > bottom slope > upper slope. With the increase of slope position,the cell membrane permeability of A. ordosica first decreased and then increased,and the superoxide dismutase (SOD ) first increased and then decreased. MDA first increased and then decreased in July and August, but decreased with the increase of slope position in September and October. Peroxidase (POD ) decreased with the increase of slope position in July and August, but first decreased and then increased in September and October. It is concluded that the correlation between cell membrane permeability and drought resistance of slope is the closest. A. ordosica has the greatest moisture content in the slope soil and thus strong drought resistance.
中文关键词	油蒿 ; 坡位 ; 抗氧化系统酶 ; 土壤水分
英文关键词	Artemisia ordosica slope position antioxidant system enzymes soil moisture
语种	中文
收录类别	CSCD
WOS类目	BIOLOGY
WOS研究方向	Life Sciences & Biomedicine - Other Topics
CSCD记录号	CSCD:6625987
来源机构	宁夏大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/316204
作者单位	宁夏大学;;宁夏大学, 西北退化生态系统恢复与重建教育部重点实验室;;西北土地退化与生态恢复国家重点实验室培育基地, 银川;;银川, ;; 750021;;750021
推荐引用方式 GB/T 7714	孟文婷,王甜甜,赵学琳,等. 不同坡位对毛乌素沙地油蒿根区土壤水分及生理指标的影响[J]. 宁夏大学,2019,35(12):57-63.
APA	孟文婷,王甜甜,赵学琳,&朱林.(2019).不同坡位对毛乌素沙地油蒿根区土壤水分及生理指标的影响.生物技术通报,35(12),57-63.
MLA	孟文婷,et al."不同坡位对毛乌素沙地油蒿根区土壤水分及生理指标的影响".生物技术通报 35.12(2019):57-63.