利用GRACE重力卫星数据反演的长江流域陆地水储量变化(TWSA)以及MODIS遥感数据生成的归一化植被指数(NDVI),从趋势性、相关性及时空变化特征3方面分析长江流域陆地水储量变化以及植被覆盖变化。结果表明:长江流域归一化植被指数(NDVI)与陆地水储量变化(TWSA)之间有强相关性,二者均在2月份达到最低值,在8月份达到峰值,季节变化均呈现夏季＞秋季＞春季＞冬季的规律。利用GRACE水储量与NDVI最小二乘拟合关系,通过灰色预测模型得出长江流域2016年为偏丰水年。研究结果可为长江流域水资源规划及预警提供参考依据。
Abstract
According to the terrestrial water storage anomaly (TWSA) inversed by GRACE(Gravity Recovery and Climate Experiment) satellite data and normalized difference vegetation index (NDVI) generated by MODIS remote sensing satellite in Yangtze River basin, the variations of terrestrial water storage and vegetation cover in the Yangtze River Basin are analyzed from aspects of trend, correlation, temporal and spatial variation characteristics. Results indicate strong correlation between TWSA and NDVI, which both reach the minimum in February and the maximum in August; the values of TWSA and NDVI are greatest in summer, followed by those in autumn, spring, and winter in sequence. By least square fitting between TWSA and NDVI together with grey prediction model, we conclude that in the Yangtze River Basin 2016 is the relatively wet year. The results would offer reference for the planning and pre-warning of water resources in the Yangtze River basin.
关键词
GRACE卫星 /
长江流域 /
陆地水储量(TWS) /
归一化植被指数(NDVI) /
灰色预测
Key words
GRACE satellite /
Yangtze River basin /
terrestrial water storage(TWS) /
normalized different vegetation index(NDVI) /
grey prediction method
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] 王 文,王 鹏,崔 巍.长江流域陆地水储量与多源水文数据对比分析[J].水科学进展,2015,26(6):759-768.
[2] RIEGGER J,TOURIAN M J. Characterization of Runoff-storage Relationships by Satellite Gravimetry and Remote Sensing[J].Water Resources Research,2014,50(4):3444-3466.
[3] 胡小工,陈剑利,周永宏,等.利用GRACE空间重力测量监测长江流域水储量的季节性变化[J].中国科学D辑 地球科学,2006,36(3):225-232.
[4] 曹艳萍,南卓铜.利用GRACE重力卫星监测黑河流域水储量变化[J].遥感技术与应用,2011,26(6):719-727.
[5] 翟 宁,王泽民,伍 岳,等.利用GRACE反演长江流域水储量变化[J].武汉大学学报(信息科学版),2009,34(4):436-439.
[6] 尼胜楠,陈剑利,李 进,等.利用GRACE卫星时变重力场监测长江、黄河流域水储量变化[J].大地测量与地球动力学,2014,34(4):49-55.
[7] 罗志才,李 琼,钟 波.利用GRACE时变重力场反演黑河流域水储量变化[J].测绘学报,2012,41(5):676-681.
[8] 任永强,潘 云,宫辉力.海河流域地下水储量空间变化趋势分析[J].首都师范大学学报(自然科学版),2014,35(2):89-98.
[9] 许朋琨,张万昌.GRACE 反演近年青藏高原及雅鲁藏布江流域陆地水储量变化[J].水资源与水工程学报,2013,(1):23-29.
[10]李生勇,王晓卿,李 彪.基于MODIS 数据的科尔沁区植被覆盖时空变化分析[J].raybet体育在线
院报,2016,33(2):121-127.
[11]谭德宝,刘良明,鄢俊洁,等.MODIS 数据的干旱监测模型研究[J].raybet体育在线
院报,2004,21(3):11-15.
[12]SCHMIDTH,GITELSON A.Temporal and Spatial Vegetation Cover Change in Israeli Transition Zone:AVHRR-based Assessment of Rainfall Impact[J].International Journal of Remote Sensing,2002,21(5):997-1010.
[13]张井勇,董文杰,叶笃正,等.中国植被覆盖对夏季气候影响的新证据[J].科学通报,2003,48(1):91-95.
[14]李秀花,师庆东,郭 娟,等.中国西北干旱区1981—2001年NDVI对气候变化的响应分析[J].干旱区资源与环境,2009,23(2):12-16.
[15]张钛仁,张佳华,申彦波,等.1981—2001年西北地区植被变化特征分析[J].中国农业气象,2010,31(3):586-590.
[16]吴珊珊,姚治君,姜丽光,等.基于MODIS的长江源植被NPP时空变化特征及其水文效应[J].自然资源学报,2016,31(1):39-51.
[17]王志强,汪洁华,王式功,等.灰色模型在环渤海地区降水过程预报中的应用[J].干旱气象,2012,30(2):272-275.
基金
国家重点研发计划课题项目(2016YFC0400909);水利部黄河泥沙重点实验室开放课题基金项目(2017003)
PDF(2240 KB)
