干旱区生态环境知识资源中心(Arid): 柴达木盆地德令哈地区MODIS-NDVI时空变化及其与气候的关系

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	柴达木盆地德令哈地区MODIS-NDVI时空变化及其与气候的关系
其他题名	Spatial-temporal variations of MODIS-NDVI and its correlations with climate in Delingha Region, Qaidam Basin
	曾彪; 高维; 杨太保
来源期刊	兰州大学学报. 自然科学版
ISSN	0455-2059
出版年	2014
卷号	50 期号:1 页码:80-88
中文摘要	利用遥感与GIS手段,分析了12年来柴达木盆地德令哈地区MODIS-NDVI的时空变化及其与气温、降水量的空间相关性.研究表明:2000-2011年柴达木盆地德令哈地区生长季NDVI平均值年际变化趋势中,改善区、稳定区、退化区和无植被生长区的面积分别占总面积的49.13%,32.14%,0.51%,18.21%;山地和绿洲生长季NDVI平均值的增长率分别为3.9%/10 a,2.9%/10 a.在山地的各海拔高度带上,12年NDVI平均值越大的区域,植被改善趋势越强烈,反之改善趋势越微弱.山地改善区在海拔较低、坡度较小的区域以及南坡所占的面积百分比较大,绿洲植被改善显著的典型区域主要分布在农场区域和临近河流的部分区域,退化显著的区域主要分布在城镇建设区域,植被砍伐、铁路和公路修建区域.12年来德令哈地区气候呈暖湿化趋势.德令哈地区植被的生长状况与生长季降水量和生长季前期气温呈较强的正相关关系,而与生长季气温和前期降水量的相关性并不显著.春季较高的温度和较多的降水量、夏季较多的降水量以及前一年冬季较高的温度是植被生长的有利条件.
英文摘要	Based on RS and GIS technology, the spatial-temporal changes of NDVI in Delingha Region and its spatial correlation with temperature and precipitation were analyzed and the results showed that the greening area, stable area, degraded area and bare area accounted for 49.13%, 32.14%, 0.51%and 18.21%of the total area respectively in the variation trend of growing-season vegetation NDVI averages from 2000 to 2011. The growth rate of growing-season vegetation NDVI averages in mountain and oasis region was 3.9%/10 a and 2.9%/10 a. In all the altitude rings of the mountainous region, the bigger the NDVI value, the more intense the vegetation greening trend;the smaller the NDVI value, the weaker the vegetation greening trend. The greening area in the mountain region was larger in lower altitudes, concentrated on gentle slopes and south sides. The greening area in oasis region was mainly distributed in farming areas and riversides, the degraded area was mainly distributed in urban construction zones, and vegetation deterioration mainly occurred along railway and highway construc-tion areas. The climate in Delingha Region became warmer and wetter in the last 12 years. Vegetation growth conditions in Delingha Region had positive correlations with growing-season precipitation and prophase temper-ature, but were uncorrelated with growing-season temperature and prophase precipitation. Higher temperature and more precipitation in the spring, more precipitation in the summer and higher temperature in the winter of the previous year was beneficial to vegetation growth.
中文关键词	空间差异 ; 气候变化 ; 德令哈地区
英文关键词	MODIS/NDVI MODIS/NDVI spatial difference climatic variation Delingha Region
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES ; REMOTE SENSING
WOS研究方向	Plant Sciences ; Remote Sensing
CSCD记录号	CSCD:5080454
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231413
作者单位	兰州大学资源环境学院, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	曾彪,高维,杨太保. 柴达木盆地德令哈地区MODIS-NDVI时空变化及其与气候的关系[J]. 兰州大学,2014,50(1):80-88.
APA	曾彪,高维,&杨太保.(2014).柴达木盆地德令哈地区MODIS-NDVI时空变化及其与气候的关系.兰州大学学报. 自然科学版,50(1),80-88.
MLA	曾彪,et al."柴达木盆地德令哈地区MODIS-NDVI时空变化及其与气候的关系".兰州大学学报. 自然科学版 50.1(2014):80-88.