| 鄱阳湖流域NDVI时空变化及其与地表径流的关系 |
| |
| 引用本文： | 邵步粉,周锁铨,顾婷婷,李强. 鄱阳湖流域NDVI时空变化及其与地表径流的关系[J]. 中国农业气象, 2010, 31(2): 288-294. DOI: 10.3969/j.issn.1000-6362.2010.02.023 |
| |
| 作者姓名： | 邵步粉 周锁铨 顾婷婷 李强 |
| |
| 作者单位： | 南京信息工程大学/气象灾害省部共建教育部重点实验室,南京,210044 |
| |
| 基金项目： | 国家自然基金(40775061/D0507); 中科院遥感所(SK050004); 江苏省气象灾害重点试验室(KLME050212) |
| |
| 摘 要： | 根据鄱阳湖流域4个子流域1982-1999年归一化植被指数（NDVI）数据集和4个水文站的径流数据,采用年代际差异变化、相关分析、Morlet小波分析方法,对鄱阳湖4个子流域NDVI和径流关系进行研究,并从年内、年际两个角度研究各子流域的NDVI时空变化特征。结果表明：分析期内鄱阳湖流域各子流域多年平均NDVI的年内变化趋势一致,年平均NDVI总体上都呈增加趋势,NDVI主要受到降水、径流的影响。相关分析显示,整个流域年NDVI与径流量间呈显著正相关,径流量与滞后3个月的植被NDVI间相关性最高;子流域的径流量普遍存在着12个月、部分存在35、62个月左右周期的震荡信号,各信号频率分布的时间域及其强度存在着差异,其中12个月周期最强,短周期强于长周期;NDVI与径流量具有同等的周期变化特点。
|
| 关 键 词： | 鄱阳湖流域 径流 NDVI 相关分析 Morlet小波分析 |
Spatio-temporal Changes of NDVI and Their Relationships with Runoff in the Poyang Lake Basin |
| |
| SHAO Bu-fen,ZHOU Suo-quan,GU Ting-ting,LI Qiang. Spatio-temporal Changes of NDVI and Their Relationships with Runoff in the Poyang Lake Basin[J]. Chinese Journal of Agrometeorology, 2010, 31(2): 288-294. DOI: 10.3969/j.issn.1000-6362.2010.02.023 |
| |
| Authors: | SHAO Bu-fen ZHOU Suo-quan GU Ting-ting LI Qiang |
| |
| Affiliation: | (Nanjing University of Information Science ＆Technology/Key Laboratory of Meteorological Disaster of Ministry of Education,Nanjing 210044,China) |
| |
| Abstract: | Based on the 8km resolution multi-temporal NOAA AVHRR-NDVI datasets and the daily runoff data from four hydrometrical stations during 1982-1999,the characteristics of NDVI and runoff and their relationships in four sub-regions of Poyang Lake Basin were studied at annual and inter-annual scales by using the methods of inter-decadal variations,correlation analysis and Morlet wavelet analysis. The results indicated that the mean annual NDVI increased all in four sub-regions from 1982 to 1999 and the inter-annu... |
| |
| Keywords: | Poyang Lake Basin Runoff NDVI(Normalized Difference Vegetation Index) Correlation analysis Morlet wavelet analysis |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
