干旱区生态环境知识资源中心(Arid): 新疆塔里木河干流荒漠河岸林植被带变化

Arid

	新疆塔里木河干流荒漠河岸林植被带变化
其他题名	Changes of desert riparian vegetation along the main stream of Tarim River,Xinjiang
	陈海燕; 陈亚宁
来源期刊	生态学杂志
ISSN	1000-4890
出版年	2015
卷号	34 期号:11 页码:3166-3173
中文摘要	基于近40年5个不同时期的Landsat遥感数据和样地调查资料,对塔里木河干流以荒漠河岸林为主体的植被带的时空变化进行了反演,结果表明:(1)塔里木河干流平均植被覆盖度为15%,空间差异明显,总体上呈上游高(20%)、下游低(9%),北岸高(17%)、南岸低(12%)的特征。植被带宽度也有同样的分布特点;(2)塔里木河干流植被覆盖度总体呈上升趋势,平均上升速率为0.0038?10年~(-1),但不同河段差异明显,上游增加速度最快,平均增加速率为0.0083?10年~(-1),中游增加速度为0.0013?10年~(-1),而下游呈现下降趋势,下降速率为-0.0003?10年~(-1);(3)从不同植被覆盖等级来看,塔里木河干流以中低植被覆盖度所反映的荒漠河岸林呈减少和退化趋势,以高植被覆盖度所反映的耕地和人工植被面积呈增加趋势;(4)塔里木河干流上游植被带宽度和覆盖度的增加是由研究区内人工绿洲扩大所致,是以牺牲下游生态环境为代价的。
英文摘要	Based on the Landsat datasets in five different periods during the past four decades in combination with the plot investigation data along the main stream of Tarim River,Xinjiang,this paper explored the dynamic change of desert riparian vegetation. The results showed that: (1) The mean vegetation coverage along the main stream of Tarim River was about 15%,with a significant spatial variation. The vegetation coverage was the highest (20%) in the upstream area, and the lowest (9%) in the downstream area,and reached up to 17% on the north side and 12% on the south side. In addition,vegetation zone width had the same distribution patterns as the vegetation coverage. (2) The vegetation coverage had an increased trend in the main stream area of Tarim River,with an average rising rate of 0.0038?10 a~(-1). The vegetation coverage in the upstream and midstream areas increased at 0.0083?10 a~(-1) and 0.0013?10 a~(-1),respectively,while the vegetation coverage in the downstream had a decline trend,with a decline rate of-0.0003?10 a~(-1). (3) The low-medium vegetation coverage reflecting desert riparian forest was in a declined trend, while the high vegetation coverage reflecting farmland and artificial vegetation had a rising trend. (4) The expansion of the artificial oasis was the main factor for the rise of vegetation zone width and vegetation coverage in the upstream area,with the expense of sacrificing ecological environment in the downstream area.
中文关键词	荒漠 ; 河岸林 ; 植被变化 ; 自然植被 ; 人工绿洲
英文关键词	desert riparian forest vegetation change natural vegetation artificial oasis
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:5572531
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/2XILL650/233246
作者单位	中国科学院新疆生态与地理研究所, 荒漠与绿洲生态国家重点实验室, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	陈海燕,陈亚宁. 新疆塔里木河干流荒漠河岸林植被带变化[J]. 中国科学院新疆生态与地理研究所,2015,34(11):3166-3173.
APA	陈海燕,&陈亚宁.(2015).新疆塔里木河干流荒漠河岸林植被带变化.生态学杂志,34(11),3166-3173.
MLA	陈海燕,et al."新疆塔里木河干流荒漠河岸林植被带变化".生态学杂志 34.11(2015):3166-3173.