干旱区生态环境知识资源中心(Arid): 库姆塔格沙漠风沙活动特征

Arid

	库姆塔格沙漠风沙活动特征
其他题名	Characteristics of blown sand activity in the Kumtagh Desert
	张正偲; 董治宝; 赵爱国; 钱广强
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2010
卷号	33 期号:6 页码:939-946
中文摘要	库姆塔格沙漠面积虽然较小, 但其风沙地貌类型复杂, 包含格状沙丘、复合型沙垄、金字塔沙丘以及"羽毛状"沙丘, 其中"羽毛状沙丘"是该沙漠独特的沙丘类型, "羽毛状"沙漠也成了库姆塔格沙漠的代名词. 以往对该沙漠风沙地貌的研究局限于遥感影像的判读或者理论分析, 很少有实测数据的支持. 近期对该沙漠的综合考察对该沙漠的风沙地貌有了新的认识. 以建立在库姆塔格沙漠4个方位的5个气象站(测风站)的实测资料为基础, 对库姆塔格沙漠近地层风况、风沙活动特征进行了研究. 结果表明: (1)库姆塔格沙漠近地层风向复杂, 总体可分为两种基本类型风向的区域: 沙漠西北和北面为两组风向, 而东南和南边为三组风向. (2)库姆塔格沙漠风沙活动强烈, 沙漠绝大部分区域属于中风能环境外, 南部部分地区都属于低风能环境. (3)该区域的风沙地貌类型和近地层风向特征与合成输沙势方向吻合, 年合成输沙势方向在沙漠的西北和北面为西南方向, 在多坝沟地区, 输沙方向为西北方向, 在沙漠南面为东北方向. 风向变率在0.3~0.8之间, 属于中比率, 风况特征属于钝双峰风况或锐双峰风况. 年输沙量在0.53-1.14 t/m~2之间
英文摘要	The area of the Kumtagh Desert is small, but there are different types of sand dunes, such as trellis dune, complicated sand sheet, pyramidal dune and the so-called feathery dune; The feathery dune is the most special type of sand dune in Kumtagh Desert and almost is a synonym for Kumtagh Desert. At present, dune types and morphology are mainly recognized on remote sensing images and with theory analysis. Recent field investigation into the desert led to new recognition on blown sand geomorphology. This paper attempts to use five meteorological stations wind data to study the characteristics of Kumtagh Desert wind regime and blown sand activities. The result indicated as follows: (1) in the desert, wind directions in different regions are very complicated, it can generally be divided into two types of wind direction regions. In the northwest and north regions of desert, wind direction conclude two directions, but in the southeast and south regions of desert, wind direction conclude three directions. (2) Blown sand activities in the desert are very strong, most region of the desert belongs to high wind energy and has the sand drift potential of 200 - 400 VU. (3)The landform types of sand dunes in Kumtag Desert coincide with wind direction and resultant drift direction. The resultant drift directions (RDD) are different in the desert. In the northwest and north of the desert, RDD is northwest direction. In the Duobagou region, RDD is southwest direction, and in the south of the desert, RDD is southeast direction. Values of RDP/DP in the desert are between 0.3 and 0. 8. Annual sand transport is between 0.53 t/m~2 and 1.14 t/m~2
中文关键词	风沙活动特征 ; 输沙势 ; 输沙量 ; 库姆塔格沙漠
英文关键词	blown sand sand drift potential (DP) sand transport Kumtagh Desert
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:4103246
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/225035
作者单位	中国科学院沙漠与沙漠化重点实验室, 中国科学院沙漠与沙漠化重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	张正偲,董治宝,赵爱国,等. 库姆塔格沙漠风沙活动特征[J],2010,33(6):939-946.
APA	张正偲,董治宝,赵爱国,&钱广强.(2010).库姆塔格沙漠风沙活动特征.干旱区地理,33(6),939-946.
MLA	张正偲,et al."库姆塔格沙漠风沙活动特征".干旱区地理 33.6(2010):939-946.