|
|||||
|
|
| 陕北地区1997-2006年NDVI变化与气候因子的关系 | |
| 引用本文： | 高蓓,张树誉,李星敏,邓凤东,沙道兵.陕北地区1997-2006年NDVI变化与气候因子的关系[J].成都信息工程学院学报,2009,24(4):387-392. |
| 作者姓名： | 高蓓 张树誉 李星敏 邓凤东 沙道兵 |
| 作者单位： | 1. 南京信息工程大学,江苏,南京,210044;陕西省农业遥感信息中心,陕西,西安,710015 2. 陕西省农业遥感信息中心,陕西,西安,710015 3. 陕西省经济作物气象服务台,陕西,西安,710015 |
| 摘 要： | 利用1997-2006年的AvHRR NOAA遥感资料,对陕西省陕北地区(榆林市、延安市和铜川市部分地区)地表植被指数的空间变化和时间变化进行了分析,并对相应时段的气候因子与植被指数之间的关系,以及气候因子对该地区植破的影响进行了分析.结果表明:近10a陕北大部地区平均植被有增加的趋势,但部分地区有减少的趋势.四季平均NDVI呈上升趋势,春季是陕北季平均NDVI上升趋势最为显著,上升速度最快的季节.降水量对地表植被的变化起重要的作用,特别是对农业用地植被和草地植被的影响;对于常绿针叶林和落叶阔叶林植被,降水的年际变化对地表植被的影响较小;温度的变化对地表植被的变化影响显著. |
| 关 键 词： | 植被指教(NDVI) 温度 降水量 |
NDVI changes and their relation with climate factors in Northern Shaanxi during 1997-2006 |
|
| GAO Bei,ZHANG Shu-yu,LI Xing-min,DENG Feng-dong,SHA Dao-bing.NDVI changes and their relation with climate factors in Northern Shaanxi during 1997-2006[J].Journal of Chengdu University of Information Technology,2009,24(4):387-392. | |
| Authors: | GAO Bei ZHANG Shu-yu LI Xing-min DENG Feng-dong SHA Dao-bing |
| Institution: | GAO Bei1,2,ZHANG Shu-yu2,LI Xing-min3,DENG Feng-dong2,SHA Dao-bing2 (1.Nanjing University of Information Technology,Nanjing 210044,China,2.Remote Sensing Center for Agricultural Information of Shaanxi Province,Xi'an 710015,3.Shaanxi Meteorological Service Center of Economic crops,China) |
| Abstract: | Using the AVHRR-NOAA NDVI satellite data the spatial distribution and time changes of the surface vegetation index in Northern Shaanxi in the past 10 years is studied and the relationship between the climate,the vegetation index and the impact of the climate on the vegetation index in this region are analyzed.Combined with the climatic dataset and land cover data the vegetation cover changes and their relation with the climate variability are analyzed.The results show that the vegetation cover is broadly co... |
| Keywords: | NDVI temperature precipitation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |