Distribution Pattern of Soil Salinity in Tamarix Nebkhas in Tarim Basin

YIN Chuan-hua; SHI Qiu-mei; LIANG Fei; TIAN Chang-yan

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Distribution Pattern of Soil Salinity in Tamarix Nebkhas in Tarim Basin

- Distribution Pattern of Soil Salinity in Tamarix Nebkhas in Tarim Basin
- Bulletin of Soiland Water Conservation Vol. 32, Issue 3, Pages: 287-293(2013)
- 作者机构：
  
  1. 中国科学院新疆生态与地理研究所荒漠与绿洲生态国家重点实验室,新疆,乌鲁木齐
  2. 新疆大学生命科学与技术学院,新疆,乌鲁木齐,830046
  3. 新疆农垦科学院农田水利与土壤肥料研究所,新疆,石河子,832000
- 作者简介：
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- Published：2013
- 稿件说明：
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YIN Chuan-hua, SHI Qiu-mei, LIANG Fei, et al. Distribution Pattern of Soil Salinity in Tamarix Nebkhas in Tarim Basin[J]. Bulletin of Soiland Water Conservation, 2013, 32(3): 287-293.
DOI：

YIN Chuan-hua, SHI Qiu-mei, LIANG Fei, et al. Distribution Pattern of Soil Salinity in Tamarix Nebkhas in Tarim Basin[J]. Bulletin of Soiland Water Conservation, 2013, 32(3): 287-293. DOI：

摘要

为明确处于稳定阶段柽柳灌丛沙堆内土壤盐分的分布规律及其对环境可能产生的影响

以塔里木盆地北缘洪积冲积扇末端为研究区

分析了灌丛沙堆内与堆间地盐分的分布特征及其与柽柳灌丛凋落物年产量的关系。研究结果表明

柽柳灌丛沙堆表层土壤(0—30cm)盐分明显低于堆间地表层土壤盐分

Abstract

The relationship between soil salinity in the top soil of nebkhas and annual litter-fall production of tamarisk shrub was analyzed to clarify the distribution of soil salinity patterns in and outside Tamarix nebkhas and their effects on oasis ecosystem.Results indicated that soil salinity in nebkhas surface soil(0-30cm)was lower than in internebkhas.Annual litter production was found to be an important factor reducing soil salinity in surface soil beneath the canopy according to correlation analysis.In contrast

soil salinity enrichment was observed in deeper soil layer(30-120cm)in the Tamarixnebkhas compared to internebkhas

which indicated the formation of salinity islands in nebkhas.K+

Na+

Cl-and HCO3 were the four important ions enriched in resource islands.The other three ions(SO42-

Ca2+and Mg2+)were distributed evenly or randomly in deeper soil.These results suggested that the Tamarix nebkhas gathered soil salinity from internebkha spaces.The fate of Tamarixnebkhas will affect the stability of oasis ecosystem in the arid zone.

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