干旱区生态环境知识资源中心(Arid): 陕北神木地区沙漠化动态演化分析

Arid

	陕北神木地区沙漠化动态演化分析
其他题名	Dynamic evolution analysis of the sandy desertification in the Shenmu area, North Shaanxi, China
	王洪亮 1; 雷泓宴 2; 张清盛 2
来源期刊	成都理工大学学报. 自然科学版
ISSN	1671-9727
出版年	2005
卷号	32 期号:3 页码:308-314
中文摘要	通过神木地区的1∶5万生态地质填图,以实际调查为基础,结合20世纪80年代、2000年等不同时期的航空、航天信息资料和历史文字、图形、图表等对神木地区沙质荒漠化(简称沙漠化)的特点、影响因素、动态演化趋势进行了分析,认为地质因素是沙漠化的内因,是沙漠化的物质基础,气候和人类经济活动是沙漠化的外因,影响着神木地区沙漠化的进程与速度.以地质因子调查为基础,以卫星遥感技术为手段,初步查明了沙漠化的物质来源、分布特点,并建立了神木地区沙漠化动态分析模型;分别编制了20世纪80年代及2000年两个时段的沙漠分布图,总结了20年间神木地区沙漠化发展趋势,将该地区沙漠化演化类型划分为逆转型、扩大型、活化型和无明显变化型.神木地区以逆转型为主导,表现在流动沙丘及半固定沙丘的面积逐步减少,而固定沙丘的范围在快速扩大,其变化速率分别为-5.725、-9.603和16.218 km2/a.对神木地区今后沙漠化演化趋势进行了预测分析,并根据研究区的实际情况提出了沙漠化的防治措施.
英文摘要	On the basis of .1 : 50000 geological surveying and mapping, combined with the information from aero photos, and space images in the 1980s and in 2000 and some historic records including some diagrams and graphs, this paper analyses the features, influential factors and dynamic tendency of sandy desertification in the Shenmu area and indicates that the geological factors are the immanent causes and material base of the sandy desertification; The climate and nnthropic activities are the extrinsic factors affecting the course and speed of sandy desertification in the Shenmu area. By means of satellite remote sensing and geological surveying, this paper discusses on the material source and distribution features of the sandy desertification, establishes a dynamic analysis model for the sandy desertification in the Shenmu area, compiles the distribution maps of desertification in the 1980s and in 2000, and summarizes the development tendency of sandy desertification of the Shenmu area in 20 years, and divides the sandy desertification in this area into reversion type, expansion type, activation-type and unobvious change-type. In this area, the reversion-type is the dominant one. It shows that the areas of active sand dunes and semi-fixed dunes are lessening step by step with the speed of - 5. 725 km/a, -9. 603 km2/a, respectively, while the areas of fixed dunes are extending rapidly with the speed of 16. 218 knr’/a. Finally, this paper analyses and forecasts the development tendency of the sandy desertification in the Shenmu area in the future, and puts forward some preventive and controlling measures against sandy desertification.
中文关键词	神木地区 ; 沙漠化 ; 动态分析模型 ; 预测 ; 防治
英文关键词	Shenmu area sandy desertification dynamic analysis model forecast prevention and control
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:1991787
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205976
作者单位	1.西北大学地质系, 西安, 陕西 710054, 中国; 2.陕西省区域地质矿产研究院, 咸阳, 陕西 712000, 中国
推荐引用方式 GB/T 7714	王洪亮,雷泓宴,张清盛. 陕北神木地区沙漠化动态演化分析[J],2005,32(3):308-314.
APA	王洪亮,雷泓宴,&张清盛.(2005).陕北神木地区沙漠化动态演化分析.成都理工大学学报. 自然科学版,32(3),308-314.
MLA	王洪亮,et al."陕北神木地区沙漠化动态演化分析".成都理工大学学报. 自然科学版 32.3(2005):308-314.