塔克拉玛干沙漠主要灌木光合器官滞尘能力与表面特性的关系

通过全株光合器官取样,利用质量差减法,对位于新疆且末县沙漠地区的塔中植物园内10种灌木的滞尘能力进行了比较,结果表明:1)以单位鲜质量光合器官滞尘量为评价指标,10种灌木光合器官滞尘能力的排序为:紫杆柽柳〉多花柽柳〉刚毛柽柳、多枝柽柳、长穗柽柳〉甘蒙柽柳、华北柽柳〉沙生柽柳〉梭梭〉头状沙拐枣。2)10种灌木光合器官的滞尘能力与其表面特性密切相关。与沙拐枣相比,梭梭同化枝节间距较短,叶片数量相对较多,因而梭梭的滞尘能力大于沙拐枣;柽柳属植物虽然叶片也极度退化,但具有数量众多、分布密集、被覆绒毛、分泌盐分等特性,具有很强的滞尘能力,光合器官滞尘能力大于梭梭和沙拐枣;光合器官表面特性也使8种柽柳属植...

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Published in农业工程学报 Vol. 28; no. 20; pp. 223 - 229
Main Author 李生宇 谷峰 雷加强 徐新文 李应罡 靳正忠 王永东 郑伟
Format Journal Article
LanguageChinese
Published 中国科学院新疆生态与地理研究所,乌鲁木齐 830011%中国科学院塔克拉玛干沙漠研究站,库尔勒 841000%中国石油天然气股份有限公司塔里木油田分公司,库尔勒 841000%新疆电力设计院,乌鲁木齐 830002%且末县塔中气象站,且末 841000 2012
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ISSN1002-6819
DOI10.3969/j.issn.1002-6819.2012.20.030

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Summary:通过全株光合器官取样,利用质量差减法,对位于新疆且末县沙漠地区的塔中植物园内10种灌木的滞尘能力进行了比较,结果表明:1)以单位鲜质量光合器官滞尘量为评价指标,10种灌木光合器官滞尘能力的排序为:紫杆柽柳〉多花柽柳〉刚毛柽柳、多枝柽柳、长穗柽柳〉甘蒙柽柳、华北柽柳〉沙生柽柳〉梭梭〉头状沙拐枣。2)10种灌木光合器官的滞尘能力与其表面特性密切相关。与沙拐枣相比,梭梭同化枝节间距较短,叶片数量相对较多,因而梭梭的滞尘能力大于沙拐枣;柽柳属植物虽然叶片也极度退化,但具有数量众多、分布密集、被覆绒毛、分泌盐分等特性,具有很强的滞尘能力,光合器官滞尘能力大于梭梭和沙拐枣;光合器官表面特性也使8种柽柳属植物光合器官滞尘能力存在差异。研究结果在荒漠地区植物-土壤相互关系研究方面具有重要科学意义,也可为园林绿化和防护林树种选择、配置提供科学依据。
Bibliography:Photosynthetic organs stained with dusts on the whole plant of ten kinds of shrubs planted in Tazhong Botanical Garden, near the Tazhong Si Oilfield, in the hinterland of the Taklimakan Desert, were sampled. Their dust-retaining capabilities of photosynthetic organs were analyzed by mass subtraction method. The results showed that the order of photosynthetic organ dust-retaining capability of ten species of shrub evaluated by means of monomial index of dust-retaining capacity in per unit fresh mass photosynthetic organs was Tamarix androssowii Tamarix hohenakeri, Tamarix hispida, Tamarix ramosissma, Tamarix elongata, Tamarix austromongolica, Tamarix juniperina, Tamarix taklamakanensis, Haloxylon ammodendron, Calligonum caput-medusae. Dust-retaining capabilities of photosynthetic organs of 10 species of shrub were closely related to their surface properties. Compared with Calligonum caput-medusae, Haloxylon ammodendro with assimilating branches, which has more shorter knot spacing and more leaves, exhibited hi
ISSN:1002-6819
DOI:10.3969/j.issn.1002-6819.2012.20.030