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[1]LIU Kaixi,ZENG Biao,YANG Taibao,et al.Analysis of Tree Ring Width Index and Its Relationship with NDVI in Qinghua Forest of Chongqing[J].Research of Soil and Water Conservation,2015,22(03):170-175.

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Analysis of Tree Ring Width Index and Its Relationship with NDVI in Qinghua Forest of Chongqing

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 22 Number of periods: 2015 03 Page number: 170-175 Column: Public date: 2015-06-28

Title:: Analysis of Tree Ring Width Index and Its Relationship with NDVI in Qinghua Forest of Chongqing

Author(s):: LIU Kaixi, ZENG Biao, YANG Taibao, JIA Lei; College of Earth and Environmental Science, Lanzhou University, Lanzhou 730000, China

Keywords:: tree ring width; NDVI; climatic factors

CLC:: Q948;P468

DOI:: -

Abstract:: This study aims at analyzing the relationships between tree ring width index, climatic factors, and NDVI， using MODIS-NDVI data from 2000 to 2010, meteorological data, and fir [Cunninghamia lanceolata (Lamb). Hook] tree ring samples. The tree ring samples were collected from Qinghua forest in Youyang Tujia and Miao Ethnic groups Autonomous County, southwest of Chongqing. Correlation analysis and a linear fitting were used to investigate and reveal the relationship between trunks and canopies. The findings showed that the original value of the tree ring width presented the declining trend during the study period. There are correlations of different levels between climatic factors and tree ring width index. Meanwhile, NDVI and climatic factors in the same periods show the significant correlation. The entire wheel width and earlywood width both have significantly positive correlation with the NDVI of the last year and the NDVI from July to September of the last year, while latewood width and NDVI of April and May in the same years have the significantly negative correlation.

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