干旱区生态环境知识资源中心(Arid): 民勤绿洲边缘不同演替阶段白刺灌丛水分利用动态

Arid

	民勤绿洲边缘不同演替阶段白刺灌丛水分利用动态
其他题名	Water utilization dynamics of Nitraria tangutorum nebkhas in different succession stages at the edge of Minqin oasis
	赵鹏 1; 徐先英 2; 纪永福 2; 李亚 2; 安富博 2; 张慧文 2
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2019
卷号	33 期号:9 页码:168-175
中文摘要	白刺(Nitraria tangutorum)灌丛是民勤绿洲边缘的建群种,也是绿洲风沙灾害防治的重要天然屏障。水分是干旱区植物生存发展的限制性因子,研究不同演替阶段白刺灌丛水分利用动态对民勤绿洲边缘生态恢复与重建具有重要的理论和实践意义。通过测定白刺灌丛不同季节降水、土壤水、地下水、植物木质部水的稳定氢氧同位素变化特征,结合IsoSource模型,定量分析了不同演替阶段白刺灌丛生长季的水分利用策略。结果表明:不同演替阶段白刺灌丛土壤水分0-200cm垂直分布的季节变化差异明显,土壤水分排序表现为衰退阶段>发育阶段>稳定阶段。5月-9月民勤绿洲大气降水线性方程LMWL为deltaD = 6.59delta~(18)O-4.38,R~2 = 0.90,n = 114。土壤水、地下水、植物水、降水delta~(18)O随季节和演替阶段的变化规律各异。白刺灌丛发育阶段,春季主要利用中层土壤水,夏季和秋季利用地下水。稳定阶段,春季主要利用浅层土壤水分,夏季主要利用降水,秋季主要利用地下水。衰退阶段,春季主要利用深层土壤水,夏季和秋季主要利用地下水。地下水埋深、结皮覆盖度、灌丛与农田之间距离等环境因子以及植株枯枝程度共同影响着不同演替阶段白刺灌丛的水分利用策略。
英文摘要	Nitraria tangutorum nebkhas is the dominant species on the edge of Minqin oasis and an important natural barrier for the prevention and control of wind-sand disaster in oasis. Water is a limiting factor for the survival and development of plants in arid areas. It is of great theoretical and practical significance to study the water use dynamics of N. tangutorum nebkhas in different succession stages for the ecological restoration and reconstruction of Minqin oasis edge. Through measuring the characteristics of stable hydrogen and oxygen isotope changes of precipitation, soil water,ground water and plant xylem water in different seasons,and combining IsoSource model,we quantitatively analyzed the water utilization strategies in the growth seasons of N. tangutorum nebkhas in different succession stages. The results showed that there were significant seasonal differences in the vertical distribution of soil moisture 0-200cm in N. tangutorum nebkhas at different succession stages. The order of soil moisture in 0-200cm soil layer was as followed: deterioration stage > early development stage > stable stage. The meteoric water line equation in Minqin oasis from May to September was deltaD =6.59delta~(18)O-4.38,R~2 = 0.90,n = 114. The delta~(18)O of soil water,groundwater,plant water and precipitation varied with seasons and succession stages. During the development stage,soil water in middle layer was mainly used in spring,and groundwater was used in summer and autumn. In the stable stage,the soil moisture of shallow 0-60cm was mainly used in spring,precipitation was mainly used in summer and groundwater was mainly used in autumn. In the recession stage,deep soil water was mainly used in spring,and groundwater was mainly used in summer and autumn. Environmental factors such as groundwater depth,crust coverage,distance between shrubs and farmland,and the degree of deadwood affected the water use strategy of N. tangutorum shrubs in different succession stages.
中文关键词	白刺灌丛 ; 土壤水 ; 大气降水 ; 地下水 ; 水分来源 ; 稳定氢氧同位素
英文关键词	Nitraria tangutorum nebkhas soil water precipitation groundwater water source stable hydrogen and oxygen isotope
语种	中文
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6558637
来源机构	甘肃省治沙研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315950
作者单位	1.甘肃省治沙研究所;;中国科学院西北生态环境资源研究院;;甘肃民勤荒漠草地生态系统国家野外科学观测研究站;;中国科学院大学, 甘肃省荒漠化与风沙灾害防治国家重点实验室;;中国科学院沙漠与沙漠化重点实验室;;甘肃民勤荒漠草地生态系统国家野外科学观测研究站;;, 兰州;;兰州;;民勤;;, ;;;;;;北京 730070;;733000;;733000;;100049; 2.甘肃省治沙研究所;;甘肃民勤荒漠草地生态系统国家野外科学观测研究站, 甘肃省荒漠化与风沙灾害防治国家重点实验室;;甘肃民勤荒漠草地生态系统国家野外科学观测研究站, 兰州;;民勤, ;; 730070;;733000
推荐引用方式 GB/T 7714	赵鹏,徐先英,纪永福,等. 民勤绿洲边缘不同演替阶段白刺灌丛水分利用动态[J]. 甘肃省治沙研究所,2019,33(9):168-175.
APA	赵鹏,徐先英,纪永福,李亚,安富博,&张慧文.(2019).民勤绿洲边缘不同演替阶段白刺灌丛水分利用动态.干旱区资源与环境,33(9),168-175.
MLA	赵鹏,et al."民勤绿洲边缘不同演替阶段白刺灌丛水分利用动态".干旱区资源与环境 33.9(2019):168-175.