基于MODIS时序数据的贵州气候指标与EVI相关性研究
文章利用2008至2011年中分辨率成像光谱辐射计(MODIS)250 m空间分辨率的增强型植被指数(EVI)作为检测植被覆盖程度的指标参数,分析了岩溶石漠化地区与非石漠化地区植被对于气候因子的响应。结果表明:(1)无论是石漠化地区还是非石漠化地区,EVI在干旱时期和非干旱时期,与气候因子——气温(T)的相关系数rEVI-T均大于0.5(rF=0.235,α=0.05),二者表现为显著相关;(2)在非石漠化地区,EVI在干旱时期和非干旱时期与气候因子——降水量(P)的相关系数rEVI-P为0.234、0.212,两者表现出不显著相关,但在石漠化地区则表现为相反的情况;(3)在干旱发生之后的一年...
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Published in | 中国岩溶 Vol. 35; no. 1; pp. 43 - 50 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
中国科学院遥感与数字地球研究所,遥感科学国家重点实验室,北京 100101%中国科学院遥感与数字地球研究所,遥感科学国家重点实验室,北京 100101%山东科技大学测绘科学与工程学院,山东 青岛,266590%山东科技大学数学与系统科学学院,山东 青岛,266590
2016
山东科技大学测绘科学与工程学院,山东 青岛 266590 |
Subjects | |
Online Access | Get full text |
ISSN | 1001-4810 |
DOI | 10.11932/karst20160107 |
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Summary: | 文章利用2008至2011年中分辨率成像光谱辐射计(MODIS)250 m空间分辨率的增强型植被指数(EVI)作为检测植被覆盖程度的指标参数,分析了岩溶石漠化地区与非石漠化地区植被对于气候因子的响应。结果表明:(1)无论是石漠化地区还是非石漠化地区,EVI在干旱时期和非干旱时期,与气候因子——气温(T)的相关系数rEVI-T均大于0.5(rF=0.235,α=0.05),二者表现为显著相关;(2)在非石漠化地区,EVI在干旱时期和非干旱时期与气候因子——降水量(P)的相关系数rEVI-P为0.234、0.212,两者表现出不显著相关,但在石漠化地区则表现为相反的情况;(3)在干旱发生之后的一年时间,EVI在石漠化和非石漠化地区都与降水量有显著相关性,其相关系数rEVI-P分别为0.516和0.489。 |
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Bibliography: | CHEN Xu, WANG Lie , ZHU Hong-chun, ZHANG Miao-miao, NIU Zheng(1. College of Geomatics, Shandong University of Science and Technology, Qingdao, Shandong 266590,China; 2. The State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth , CAS, Beijing 100101, China; 3. College of Mathematics and Systems Science, Shandong University of Science and Technology, Qingdao, Shandong 266590 ,China) 45-1157/P To study the response of the vegetation of rockydesertification area to drought climate, this paper was focused on serious rocky desertification of karst development which is typical in Guizhou Province as the experimental area. Guizhou is located in southwest China, with longitude ranging from 103°36′E to 109°35′E and latitude from 24°37′N to 29°13′N. The area is located in the eastern Yunnan-Guizhou Plateau with topographic low in the east and high in the west. The selection of experimental points was based on 19 benchmark standard meteorological stations which have direct rainfall r |
ISSN: | 1001-4810 |
DOI: | 10.11932/karst20160107 |