新疆提孜那甫河流域山区冰草生态交错带的空间格局及其动态变化研究

doi:10.7522/j.issn.1000-0240.2015.0182

冰川冻土 ›› 2015, Vol. 37 ›› Issue (6): 1650-1659.doi: 10.7522/j.issn.1000-0240.2015.0182

新疆提孜那甫河流域山区冰草生态交错带的空间格局及其动态变化研究

陈蜀江^{1 2}, 贾翔^{1 2}, 黄铁成^{1 2}, 陈孟禹³

1. 新疆师范大学地理科学与旅游学院, 新疆乌鲁木齐 830054;
2. 乌鲁木齐空间遥感应用研究所, 新疆乌鲁木齐 830054;
3. 苏州科技学院外国语学院, 江苏苏州 215009

收稿日期:2015-09-19 修回日期:2015-11-13 出版日期:2015-12-25 发布日期:2016-05-11
通讯作者: 贾翔,E-mail:jiaxiang19891204@126.com. E-mail:jiaxiang19891204@126.com
作者简介:陈蜀江(1960-),男,四川宜宾人,副教授,1980年毕业于北京林业大学,主要从事遥感和地理信息系统方面研究.E-mail:shujiang_chen@163.com
基金资助:
国家自然科学基金"基于NDVI时间效应的塔里木河流域胡杨林春尺蠖灾害遥感动态监测研究"(31460167)资助

The study of spatial pattern and dynamic changes of the ice-grass ecotone in the mountain region of the Xinjiang Tizinafu River basin

CHEN Shujiang^{1 2}, JIA Xiang^{1 2}, HUANG Tiecheng^{1 2}, CHEN Mengyu³

1. College of Geography Science and Tourism, Xinjiang Normal University, Vrümqi 830054, China;
2. Vrümqi Institute of Spatial Remote Sensing Applications, Vrümqi 830054, China;
3. School of Foreign Languages, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu, China

Received:2015-09-19 Revised:2015-11-13 Online:2015-12-25 Published:2016-05-11

摘要/Abstract

摘要： 冰-草生态交错带是陆地生态交错带的重要类型之一, 对其进行有效监测和研究对于生物多样性的保护具有重要意义. 利用2004-2013年近10 a的MODIS10A1数据提取积雪日数, 结合DEM和Landsat影像研究提孜那甫河流域山区的冰-草生态交错带的时空格局及其动态变化. 结果表明: ①近10 a 来交错带的平均面积为5 749 km², 占研究区总面积的37.83%. ②交错带分布由西南向东北偏移, 在东北坡、东坡分布较西坡和北坡多, 主要分布在海拔4 600~4 900 m的区域; 在坡度大于25°陡坡以上的区域分布较多. ③近10 a间冰-草生态交错带面积总体呈波动上升趋势, 总增长率为10.68%, 年均增长约66.78 km²; 其中2005年和2009年交错带面积较前一年有所明显下降, 而2007年交错带面积上升较为明显; 交错带面积与气温呈强正相关, 与降水呈弱负相关. ④近10 a交错带的平均海拔呈缓慢上升趋势, 2013年的交错带分布的平均海拔较2004年上升了45 m; 而近50 a来研究区高寒草甸带向上爬高了约100 m左右.

关键词: 提孜那甫河流域, 冰-草生态交错带, 空间格局, 动态变化

Abstract: Ice-grass ecotone is one important type of terrestrial ecotone and its effective monitoring and researching have important significance for the conservation of biological diversity. The spatial and temporal patterns and dynamic change of ice-grass ecotone in the Tizinafu River basin were studied by used snow cover days extracted from MODIS10A1 data from 2004 to 2013, combined with DEM and Landsat imaging. The results showed that: ① the average area of the ecotone nearly the ten years was 5 749 km², accounting for 37.83% of the total area. ② the ecotone had shifted from southwest to northeast, which in the northeast slopes and east slopes had distributed more than that in the west slopes and the north slopes; the ecotone mainly distributed from 4 600 to 4 900 meters a.s.l. and mainly on the steep slopes greater than 25° or more. ③ the Ice-grass ecotone area had increased undulately, with a total growth rate of 10.68% or an annual mean growth rate of about 66.78 km². The ecotone area had a strong positive correlation with temperature and a weak negative correlation with precipitation. However, in 2005 and 2009, the ecotone area decreased significantly as compared with the previous year, while in 2007 the ecotone area increase obviously. ④ the average altitude of the ecotone had slowly risen in the nearly 10 years, which rose 45 meters in 2013 as compared with that in 2004. It is reported that the alpine meadow zone has risen about 100 meters in the nearly 50 years in the study area.

Key words: Tizinafu River basin, ice-grass ecotone, spatial pattern, dynamic changes

中图分类号:

Q948.2

陈蜀江, 贾翔, 黄铁成, 陈孟禹. 新疆提孜那甫河流域山区冰草生态交错带的空间格局及其动态变化研究[J]. 冰川冻土, 2015, 37(6): 1650-1659.

CHEN Shujiang, JIA Xiang, HUANG Tiecheng, CHEN Mengyu. The study of spatial pattern and dynamic changes of the ice-grass ecotone in the mountain region of the Xinjiang Tizinafu River basin[J]. JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 2015, 37(6): 1650-1659.

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新疆提孜那甫河流域山区冰草生态交错带的空间格局及其动态变化研究

The study of spatial pattern and dynamic changes of the ice-grass ecotone in the mountain region of the Xinjiang Tizinafu River basin

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