干旱区生态环境知识资源中心(Arid): 近13年渭干河-库车河绿洲植被覆盖动态变化分析

Arid

	近13年渭干河-库车河绿洲植被覆盖动态变化分析
其他题名	Analysis of dynamic change in the past 13years in vegetation covering the delta oasis of Weigan-Kuqa River
	边慧芹 1; 王雪梅 2
来源期刊	草业科学
ISSN	1001-0629
出版年	2018
卷号	35 期号:12 页码:2845-2854
中文摘要	使用RS技术对渭干河-库车河三角洲绿洲进行植被覆盖度时空动态变化分析,旨为保护和恢复干旱区生态环境提供参考依据。为此,基于研究区2001、2007和2013年的ETM/OLI遥感数据,根据植被归一化指数、像元二分模型生成植被覆盖度分级图,借助空间叠加分析方法,分析了渭-库绿洲的植被覆盖度时间及空间动态变化规律。结果表明,1)利用FVC模型反演地表植被覆盖度具有一定可靠性。2)2001-2013年间,渭-库绿洲无植被覆盖区迅速减小,植被覆盖面积增多;极低覆盖度、中高覆盖度和高覆盖度增加明显,年均变化率为2.060%、2.532%和4.005%,中覆盖度和低覆盖度变化较为稳定,年均变化率为-0.593%和-0.039%。3)13年间,研究区植被覆盖未变化面积为53.87010~4 hm~2,植被覆盖度均发生变化;绿洲环境有所恢复改善,但还普遍存在环境恶化的现象。4)在研究时段内,渭-库绿洲植被覆盖度空间变化过程明显,年均变化量为1.03910~4 hm~2,生态环境呈良性变化,植被恢复面积是退化面积的1.631倍,但仍存在退化现象。近13年,渭-库绿洲植被覆盖度变化明显,与气候、地下水、人类活动以及经济、人口发展等因素有密切联系,但人类活动是影响其变化的主导因素。
英文摘要	The analysis of temporal and spatial dynamic changes in vegetation coverage in the arid region by RS technique can provide a reference for protecting and restoring the local ecological environment.Based on the ETM/OLI remote sensing data of 2001,2007,and 2013,the vegetation coverage scale was generated according to the vegetation normalization index and the pixel dichotomy model.By means of the spatial superposition analysis method,the vegetation coverage of the delta oasis of the Weigan-Kuqa River was analyzed based on time and the dynamic spatial changes.The results showed that:1)The use of the FVC model to invert the vegetation coverage exhibited some reliability.2)During the period from 2001to 2013,the non-vegetated area of the delta oasis of the Weigan-Kuqa River rapidly decreased and the area covered by vegetation increased;the extremely low coverage,medium-high coverage,and high coverage areas increased significantly with an average annual rate of change of 2.060%,2.532%,and 4.005%,respectively.The change of medium coverage and low coverage areas was relatively stable with an annual average rate of change of-0.593%and-0.039%,respectively. 3)During the 13years,the unchanged area of vegetation coverage in the study area was 53.870* 10~4 hm~2,and the vegetation coverage changed.The environment of the oasis was restored and improved,but there was also a general phenomenon of environmental deterioration.4)During the study period and the delta oasis of the Weigan-Kuqa River vegetation coverage-library space change process,there was an annual variation of 1.039*10~4 hm~2,the ecological environment showed a benign change,the vegetation restoration area was 1.631times that of the degradation area,but the degradation phenomenon continued.In the recent 13 years,the vegetation coverage of the delta oasis of the Weigan-Kuqa River has undergone obvious changes, which are closely related to climate,groundwater,human activities,and economic and population development. However,human activities are the main factors influencing the change.
中文关键词	植被覆盖度 ; 空间叠加分析 ; 动态变化 ; 渭-库绿洲
英文关键词	vegetation covering spatial superposition analysis dynamic change the delta oasis of Weigan-Kuqa River
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:6399690
来源机构	新疆师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237340
作者单位	1.新疆师范大学地理科学与旅游学院, 乌鲁木齐, 新疆 830054, 中国; 2.新疆师范大学地理科学与旅游学院;;新疆干旱区湖泊环境与资源实验室, ;;新疆干旱区湖泊环境与资源实验室, 乌鲁木齐;;乌鲁木齐, 新疆;;新疆 830054;;830054, 中国
推荐引用方式 GB/T 7714	边慧芹,王雪梅. 近13年渭干河-库车河绿洲植被覆盖动态变化分析[J]. 新疆师范大学,2018,35(12):2845-2854.
APA	边慧芹,&王雪梅.(2018).近13年渭干河-库车河绿洲植被覆盖动态变化分析.草业科学,35(12),2845-2854.
MLA	边慧芹,et al."近13年渭干河-库车河绿洲植被覆盖动态变化分析".草业科学 35.12(2018):2845-2854.