| 梭梭(Haloxylon ammodendron)主根周围土壤特征 |
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| 引用本文： | 楚新正,马倩,马晓飞,徐莉,马婕.梭梭(Haloxylon ammodendron)主根周围土壤特征[J].中国沙漠,2014,34(1):170-175. |
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| 作者姓名： | 楚新正 马倩 马晓飞 徐莉 马婕 |
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| 作者单位： | 1. 新疆师范大学 地理科学与旅游学院, 新疆 乌鲁木齐 830054;2. 新疆师范大学 新疆干旱区湖泊环境与资源实验室, 新疆 乌鲁木齐 830054 |
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| 基金项目： | 新疆维吾尔自治区自然科学基金项目(2011211A033);国家自然科学基金项目(41261046)资助 |
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| 摘 要： | 通过建立米级的空间尺度进行分层取样,研究了准噶尔盆地南缘建群种——梭梭(Haloxylon ammodendron)主根周围土壤的含水率、容重、pH值、电导率和养分含量的变化状况。结果表明:(1)土壤含水量在表层5cm处最小,土壤容重在0~40cm土层变动幅度不大,但随着与茎基垂线距离的增加,二者出现显著变化(p0.05)。(2)土壤pH值和电导率在主根区周围呈现聚集现象,最大聚集率均在0~1m圈层,但随着距离的增加,土层深度逐渐成为主导因素。(3)土壤养分在表层5cm处聚集,但水平聚集范围中除有机质和全氮可扩增到3~4m外,全磷和速效养分均在0~2m。本研究结论对于荒漠区耐盐性植被的合理密植有一定的理论意义。
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| 关 键 词： | 梭梭(Haloxylon ammodendron) 土壤养分 肥岛 准噶尔 空间分异 |
| 收稿时间： | 2013-06-18; |
Characteristics of the Soil around the Main Root of Haloxylon Ammodendron |
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| Chu Xinzheng,Ma Qian,Ma Xiaofei,Xu Li,Ma Jie.Characteristics of the Soil around the Main Root of Haloxylon Ammodendron[J].Journal of Desert Research,2014,34(1):170-175. |
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| Authors: | Chu Xinzheng Ma Qian Ma Xiaofei Xu Li Ma Jie |
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| Institution: | 1. College of Geography and Tourism, Xinjiang Normal University, Urumqi 830054, China;2. Key Laboratory of Lake Environment and Resources in Arid Area, Xinjiang Normal University, Urumqi 830054, China |
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| Abstract: | Based on establishing meter-level spatial scale to conduct stratified sampling, the changes of moisture content, bulk density, pH, electrical conductivity and nutrient in the soil around the main roots of Haloxylon ammodendron which is the constructive species at the south edge of Junggar Basin have been studied. The results showed that: (1) The soil moisture content reached the lowest value at depth of 5 cm. The soil bulk density did not change remarkably in the 0-40 cm soil layer. However, with the increase of distance to the main root, the above two factors significantly changed (p<0.05). (2) The soil pH and electrical conductivity respectively presented around the aggregation phenomenon in the taproot zone, the maximum aggregation rate was in 0-1 m layer. However, with the increase of distance, the soil depth gradually became the dominant factor. (3) The soil nutrients aggregated at the 5 cm layer, while in the range of horizontal aggregation, except that the organic matter and total nitrogen extended to 3-4 m, both the total P and available nutrients were located in the range of 0-2 m. These may have a theoretical significance on the rational close planting of salt tolerant vegetation in the desert area. |
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| Keywords: | Haloxylon ammodendron" target="_blank">Haloxylon ammodendron')" href="#">Haloxylon ammodendron soil nutrients fertile island Junggar Basin spatial differentiation |
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