干旱区生态环境知识资源中心(Arid): 绿洲-沙漠过渡带骆驼刺群落的防风阻沙作用

Arid

	绿洲-沙漠过渡带骆驼刺群落的防风阻沙作用
其他题名	Effect of Alhagi sparsifolia community on wind block and drift sand control in the oasis-desert ecotone
	王雪芹 1; 胡永锋 1; 杨东亮 1; 郭洪旭 1; 杨帆 1; 张忠良 2
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2011
卷号	34 期号:6 页码:919-925
中文摘要	以塔克拉玛干沙漠南缘的策勒绿洲沙漠过渡带为研究区，从防风阻沙的角度研究该区域主要植物群落-骆驼刺群落的生态学特性，并分别对骆驼刺样地和裸沙样地进行梯度风速和多向输沙的同步对比观测，结合输沙势的季节和方向分布，确定骆驼刺群落的防风阻沙作用。结果表明，多年生木质化草本植物骆驼刺在4月上旬萌发，5 ~7月为生长旺季，8月以后生长缓慢，以木质化过程为主。4?6月为该区域的强风盛行期，活体骆驼刺植被的盖度并不能有效防止风蚀，但头年生长的骆驼刺地上部分干枯死亡后仍处于直立状态，在翌年风季来临时有效发挥防风阻沙作用。与裸沙地相比，覆盖度在30%左右的骆驼刺样地风速可降低26%?67%，对应的地表输沙通量也仅为裸沙地表的15%。根据实测输沙量与风能的关系推断，如果没有骆驼刺植物的保护，每年从策勒绿洲西部风沙前沿进入绿洲内的单宽输沙量可达到170.24 t。km~(-1)。 a~(-1)，而骆驼刺地表单宽输沙量仅为26.43 t。km~(-1)。a~(-1)，可见骆驼刺群落具有极好的阻沙效果。
英文摘要	The oasis-desert ecotone is a special area, the process of oasis desertification or its reversion is mainly depended on the vegetation state there. The Cele oasis-desert ecotone was chosen as the study area and various parameters of Alhagi sparsifoli community were surveyed from April to October of 2009, including phenolphase observation, plant height, crown diameter, coverage, and biomass etc. Gradient wind velocity and wind-blown sand transport were conducted on the bare sand surface and Alhagi sparsifolia community ground as well and the relationships between sand transport quantity and sand drift potential were determined under the two underlayer conditions. The results show that Alhagi sparsifolia plants sprout in early April and grow up rapidly from May to July, just as aeolian sand activities come to the strongest stage in the desert regions of south Xinjiang. From August to October the plants are in a slowly growth stage and mainly carry through their lignification process, which can make the plants keep standing in whole winter. When next spring coming the dead but standing plants still have a well effect on wind block and drift sand control. Compared with the bare sand surface, wind velocity below 60 cm height in the Alhagi sparsifolia ground is decreased by 26%-67%. Total sand transport quantity on bare sand surface is 6.7 times of that on Alhagi sparsifolia community ground. According to the relationship between sand transport quantity and sand drift potential, we conclude that there are about 170.24 tons sands intruding into the oasis from its west rim per kilometer for one year, while the existence of Alhagi sparsifolia community with a coverage of 30% can block about 85% of drift sands away from the oasis.
中文关键词	塔干南缘 ; 绿洲-沙漠过渡带 ; 骆驼刺群落 ; 防风阻沙 ; 输沙势
英文关键词	the southern rim of the Taklimakan Desert oasis-desert ecotone Alhagi sparsifolia community windblown sand control sand drift potential
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:4395449
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/2XILL650/226491
作者单位	1.中国科学院新疆生态与地理研究所, 中国科学院生物地理与生物资源重点实验室, 乌鲁木齐, 新疆 830011, 中国; 2.塔里木油田分公司生产运行处公路管理处, 库尔勒, 新疆 841000, 中国
推荐引用方式 GB/T 7714	王雪芹,胡永锋,杨东亮,等. 绿洲-沙漠过渡带骆驼刺群落的防风阻沙作用[J]. 中国科学院新疆生态与地理研究所,2011,34(6):919-925.
APA	王雪芹,胡永锋,杨东亮,郭洪旭,杨帆,&张忠良.(2011).绿洲-沙漠过渡带骆驼刺群落的防风阻沙作用.干旱区地理,34(6),919-925.
MLA	王雪芹,et al."绿洲-沙漠过渡带骆驼刺群落的防风阻沙作用".干旱区地理 34.6(2011):919-925.