[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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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:
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Analysis of Tree Ring Width Index and Its Relationship with NDVI in Qinghua Forest of Chongqing
- Author(s):
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LIU Kaixi, ZENG Biao, YANG Taibao, JIA Lei
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College of Earth and Environmental Science, Lanzhou University, Lanzhou 730000, China
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- Keywords:
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tree ring width; NDVI; climatic factors
- CLC:
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Q948;P468
- DOI:
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- Abstract:
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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.