干旱区生态环境知识资源中心(Arid): 塔克拉玛干沙漠腹地10种灌木光合器官的滞尘能力评价

Arid

	塔克拉玛干沙漠腹地10种灌木光合器官的滞尘能力评价
其他题名	Evaluation on Dust-holding Capabilities of Photosynthetic Organs of Ten Shrub Species in Hinterland of the Taklimakan Desert
	李生宇1 ; 谷峰 2; 邱永志 2; 靳正忠 1; 李应罡 3; 高晓阳 1
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2012
卷号	29 期号:6 页码:1022-1031
中文摘要	通过全株光合器官取样,利用质量差减法,对塔中植物园10种灌木的滞尘能力进行多指标比较。结果表明:①植物光合器官滞尘量与所处环境条件有关,在沙漠地区同种植物光合器官滞尘量大于沙漠以外区域。②梭梭和沙拐枣的光合器官退化为同化枝,形态类似针叶树种的针叶,但尚有极度退化的叶片,其滞尘量大于其他区域针叶树种;与沙拐枣相比,梭梭同化枝节间距较短,叶片数量相对较多,因此梭梭的滞尘能力大于沙拐枣。③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,而且树冠光合器官密度大,具有很强的滞尘能力,光合器官滞尘量大于梭梭和沙拐枣,也大于阔叶灌木和阔叶乔木;由于光合器官表面滞尘特性、叶片数量以及树冠光合器官密度的差异,柽柳属植物光合器官滞尘能力也存在种间差异。④全植株光合器官滞尘量、单位重量光合器官滞尘量、单位表面积光合器官滞尘量都只能从一个侧面反映植物光合器官的滞尘能力,而单位树冠体积的光合器官滞尘量则可较全面地反映植物光合器官的滞尘能力。以单位体积树冠空间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:甘蒙柽柳>长穗柽柳>华北柽柳>紫杆柽柳>刚毛柽柳>多花柽柳>多枝柽柳>沙生柽柳>梭梭>头状沙拐枣。
英文摘要	In this paper, the photosynthetic organs stained with dust on the whole plants of 10 shrub species planted in Tazhong Botanical Garden in the hinterland of the Taklimakan Desert were sampled, and their dust-holding capabilities were analyzed using the multiple indices in mass subtraction method. The results were as follows: (1) Dust-holding capabilities of plant photosynthetic organs are closely related to the environment. The plants growing in the desert hinterland can hold more dust by their photosynthetic organs than those growing in the peripheral regions of the desert; (2) Though photosynthetic organs of Haloxylon ammodendron and Calligonum caput-medusae degenerated into the assimilative branches with extremely degenerated leaves similar to needles of coniferous species, their dust-holding capabilities are higher than those of coniferous species mentioned in other paper. The dust-holding capabilities of photosynthetic organs of H. ammodendron are higher than those of C. caput-medusae because of its assimilative branches with shorter knot spacing and more leaves; (3) Though leaves of Tamarix plants also degenerated extremely, they have the excellent dust-holding capabilities by their photosynthetic organs, higher than H. ammodendron and C. caput-medusae, and even higher than broad-leaved shrubs and broad-leaved trees, because of their photosynthetic organ surface characteristics (such as the relatively bigger leaf size, abundant tomenta and salt secretion), a mass of leaves, and greater photosynthetic organ density of crown. Therefore, the dust-holding capabilities of these Tamarix plants mentioned in this paper are distinctly different; (4) Photosynthetic organs of the whole plants, unit weight and unit surface area can only represent the dust-holding capabilities in some aspects, but dust-holding amount of unit volume crown can represent the dust-holding capabilities of photosynthetic organs of plants more holistically. The dust-holding capabilities of photosynthetic organs of 10 shrub species are in an order of Tamarix austromongolica > T. elongata > T. juniperina > T. androssowii > T. hispida > T. hohenackeri > T. ramosissma > T. taklamakanensis > H. ammodendron > C. caput-medusae. These results may provide a scientific basis for tree species selection and distribution in landscaping and shelterbelt construction and dust-holding effect evaluation, and also a reference in studying the correlation between plants and soils in arid regions.
中文关键词	灌木 ; 树冠 ; 光合器官 ; 滞尘能力 ; 密度 ; 塔克拉玛干沙漠
英文关键词	shrub crown photosynthetic organ dust-holding capability density Taklimakan Desert
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:4692742
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228069
作者单位	1.中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国; 2.中国石油天然气股份有限公司塔里木油田分公司, 库尔勒, 新疆 841000, 中国; 3.新疆电力设计院, 乌鲁木齐, 新疆 830002, 中国
推荐引用方式 GB/T 7714	李生宇,谷峰,邱永志,等. 塔克拉玛干沙漠腹地10种灌木光合器官的滞尘能力评价[J]. 中国科学院新疆生态与地理研究所,2012,29(6):1022-1031.
APA	李生宇,谷峰,邱永志,靳正忠,李应罡,&高晓阳.(2012).塔克拉玛干沙漠腹地10种灌木光合器官的滞尘能力评价.干旱区研究,29(6),1022-1031.
MLA	李生宇,et al."塔克拉玛干沙漠腹地10种灌木光合器官的滞尘能力评价".干旱区研究 29.6(2012):1022-1031.