荒漠-绿洲过渡带多枝柽柳和白梭梭水分溯源研究

祖姆热提·于苏甫江; 董正武; 刘隋赟昊; 叶茂; 马晓东; 苏志豪

doi:10.13870/j.cnki.stbcxb.2022.06.027

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荒漠-绿洲过渡带多枝柽柳和白梭梭水分溯源研究

更新时间：2025-03-12

- 荒漠-绿洲过渡带多枝柽柳和白梭梭水分溯源研究
- Analysis of Water Sources in
- 水土保持学报 2022年36卷第6期页码：213-221
- 作者机构：
  
  1. 新疆特殊环境物种保护与调控生物学实验室,乌鲁木齐,830054
  2. 新疆师范大学生命科学学院,乌鲁木齐,830054
  3. 新疆师范大学地理科学与旅游学院,乌鲁木齐,830054
- 作者简介：
- 基金信息：
  
  新疆维吾尔自治区自然科学基金项目(2021D01B71);新疆师范大学优秀青年教师科研启动基金项目(XJNU202011);新疆特殊环境物种保护与调控生物学实验室招标项目(XJDX414-2021-01)
- DOI：10.13870/j.cnki.stbcxb.2022.06.027
  中图分类号： Q948.1
- 纸质出版：2022
- 稿件说明：
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祖姆热提·于苏甫江, 董正武, 刘隋赟昊, 等. 荒漠-绿洲过渡带多枝柽柳和白梭梭水分溯源研究[J]. 水土保持学报, 2022,36(6):213-221.

ZUMRAT·Yusufjan, DONG Zhengwu, LIU Suiyunhao, et al. Analysis of Water Sources in[J]. 2022, 36(6): 213-221.
祖姆热提·于苏甫江, 董正武, 刘隋赟昊, 等. 荒漠-绿洲过渡带多枝柽柳和白梭梭水分溯源研究[J]. 水土保持学报, 2022,36(6):213-221. DOI： 10.13870/j.cnki.stbcxb.2022.06.027.

ZUMRAT·Yusufjan, DONG Zhengwu, LIU Suiyunhao, et al. Analysis of Water Sources in[J]. 2022, 36(6): 213-221. DOI： 10.13870/j.cnki.stbcxb.2022.06.027.

摘要

以古尔班通古特沙漠西南缘荒漠—绿洲过渡带的多枝柽柳(Tamarix ramosissima)和白梭梭(Haloxylon persicum)为研究对象

通过分析植物木质部水与各潜在水源的δ18O值

结合MixSIAR模型

解析不同群落中多枝柽柳和白梭梭的水分来源及对各水源的利用比例。结果表明:(1)多枝柽柳和白梭梭灌丛下0—60 cm土层土壤δ18O值变化幅度较大

随土层深度的增加δ18O值趋于稳定

说明表层土壤受外界环境影响较大。(2)在多枝柽柳和白梭梭共生群落中

多枝柽柳在整个生长季主要利用300—500 cm土层土壤水

而白梭梭在春、秋季主要利用60 cm土层以下土壤水

且对各层土壤水的利用较为均匀

夏季主要获取0—60 cm土层土壤水

且利用比例高达88.0%。表明多枝柽柳和白梭梭水分利用策略存在水文生态位的分离

有利于其在水分亏缺的条件下合理利用有限的水资源;多枝柽柳在单一群落和共生群落中具有相似的水分利用来源

主要获取稳定的深层土壤水

反映出多枝柽柳根系吸水对外界环境的波动不敏感

无明显的季节性耗水变化。(3)单一白梭梭群落在春季对各层土壤水的利用较为均匀

夏季主要吸收300—500 cm土层土壤水

利用比例高达76.4%

而秋季主要利用60—300 cm土层土壤水。人工白梭梭群落在春、夏季主要利用0—60 cm土层土壤水

贡献率分别为64.2%

80.6%;而秋季主要吸收120—300 cm土层土壤水

利用比例高达93.9%。表明自然生长的白梭梭具有相对较宽的水源范围

反映出其对干旱环境较强的适应能力;而人工种植的白梭梭则对降水敏感

在水分利用方面表现出机会主义特性。

Abstract

Tamarix ramosissima and Haloxylon persicum in the desert-oasis transition zone of the southwest edge of the Gurbantunggut Desert were used as research objects

and the δ18O values of plant xylem water and potential water sources were analyzed in combination with the MixSIAR model

and the water sources and utilization ratio of each water source of T. ramosissima and H. persicum in different communities were analyzed. The results showed that: (1) The δ18O values of soils in the 0—60 cm layer under T. ramosissima and H. persicum thickets varied widely

and the δ18O values tended to be stable with the increasing of soil depth

indicating that the surface soil was greatly affected by the external environment. (2) In the symbiotic communities of T. ramosissima and H. persicum

T. ramosissima mainly used soil water in the 300—500 cm soil layer throughout the growing season

and H. persicum mainly used soil water below the 60 cm soil layer in spring and autumn

and used soil water in each layer more evenly. It mainly obtained soil water in the 0—60 cm soil layer in summer

and the utilization ratio was as high as 88.0%. It showed that there was ecohydrologic niche separation of water use strategies between T. ramosissima and H. persicum

which was conducive to their rational use of limited water resources under water deficit conditions. T. ramosissima had similar water use sources in single and symbiotic communities and mainly obtained stable deep soil water

indicating that the root water absorption of T. ramosissima was insensitive to fluctuation of the external environment and had no obvious seasonal variation in water consumption. (3) The single H. persicum community made more uniform use of soil water in each layer in spring

and mainly absorbed soil water in the 300—500 cm soil layer in summer

and the utilization ratio was as high as 76.4%

while in autumn

it mainly used soil water in the 60—300 cm soil layer. Artificial H. persicum communities mainly utilized soil water in the 0—60 cm soil layer in spring and summer with contribution rates of 64.2% and 80.6%

respectively

while they mainly absorbed soil water in the 120—300 cm soil layer in autumn with a utilization rate of 93.9%. The result showed that the natural growing H. persicum had a relatively wide range of water sources

reflecting its strong adaptability to arid environments

while the artificial cultivated H. persicum was sensitive to precipitation and showed opportunistic characteristics in water use.

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