干旱区生态环境知识资源中心(Arid): 广西喀斯特干旱农业区干旱遥感监测模型研究

Arid

	广西喀斯特干旱农业区干旱遥感监测模型研究
其他题名	Research on remote sensing drought monitoring model for Guangxi karst arid agricultural area
	匡昭敏 1; 朱伟军 1; 黄永璘 2; 杨鑫 2; 何立 2; 孙涵 2
ISSN	1004-4574
出版年	2009
卷号	18 期号:1 页码:112-117
中文摘要	广西中部喀斯特平原区是广西重要的粮食生产基地,但旱灾已成为该地区经济发展的障碍.利用EOS/MODIS数据,采用植被状态指数(I_(VC))和温度条件指数(I_(TC)),构建了干旱指数ID的遥感监测模型, 统计分析了I_D与农业受旱率的相关系数,从而确定了模型中各参数的权重系数.将该模型应用于2005年秋旱监测,经与旱情实况及前人研究成果进行对比分析,验证了干旱指数I_D的有效性.通过对I_D随I_(TC)和I_(VC)变化的敏感性评价,结果表明,I_(TC)和I_(VC)都能反映旱情变化,但I_(TC)反映旱情的敏感性高于I_(VC),以I_(TC)和I_(VC)为因子构建的干旱遥感监测模型适用于广西中部喀斯特干旱农业区的旱情遥感监测.
英文摘要	The karat plain area in middle Guangxi is an important grain production base,but drought has become se-rious impediment to regional development.Land surface temperature dataset and NDVI dataset derived from EOS/ MODIS were used to calculate vegetation condition index and temperature condition index,and a dryness index I_D was constructed.The weight of each parameter was determined by analyzing the correlative coefficients between dry-ness index I_D and agriculture drought percentage,Using the I_D,the spatiotemporal distribution of autumn drought in middle Cuangxi karst plain area in 2005 was studied,spatiotemporal pattern of I_D was compared with the real drought condition data from the observatories around Cuangxi.Then,the sensitivity of I_D to temperature condition in-dex and vegetation condition index was evaluated.The results show that the change of dryness are more sensitive to temperature condition index than to vegetation condition index,and dryness indexes I_D based on temperature condi-tion index and vegetation condition index are reasonable for the middle Cugnxi karst plain area.
中文关键词	干旱 ; 遥感监测 ; 喀斯特 ; 广西
英文关键词	drought remote sensing monitoring karst Guangxi
语种	中文
国家	中国
收录类别	CSCD
WOS类目	REMOTE SENSING ; METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Remote Sensing ; Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:3527434
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224652
作者单位	1.南京信息工程大学, 南京, 江苏 210044, 中国; 2.广西气象减灾研究所, 南宁, 广西 530022, 中国
推荐引用方式 GB/T 7714	匡昭敏,朱伟军,黄永璘,等. 广西喀斯特干旱农业区干旱遥感监测模型研究[J],2009,18(1):112-117.
APA	匡昭敏,朱伟军,黄永璘,杨鑫,何立,&孙涵.(2009).广西喀斯特干旱农业区干旱遥感监测模型研究.,18(1),112-117.
MLA	匡昭敏,et al."广西喀斯特干旱农业区干旱遥感监测模型研究".18.1(2009):112-117.