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| 漠河樟子松树轮指数与标准化植被指数的关系研究 | |
| 引用本文： | 何吉成,王丽丽,邵雪梅.漠河樟子松树轮指数与标准化植被指数的关系研究[J].第四纪研究,2005,25(2):252-257. |
| 作者姓名： | 何吉成 王丽丽 邵雪梅 |
| 作者单位： | 1. 中国科学院地理科学与资源研究所,北京,100101;中国科学院研究生院,北京,100039 2. 中国科学院地理科学与资源研究所,北京,100101;中国科学院青藏高原研究所,北京,100085 |
| 基金项目： | 中国科学院知识创新工程项目 |
| 摘 要： | 利用我国寒温带针叶林的樟子松树轮数据和多年NDVI数据,运用树轮指数生成程序ARSTAN得到最大密度、晚材密度等7种树轮指数的标准化序列。首先分析了森林NDVI的逐月和逐年变化特征,然后分析了各种树轮指数与森林NDVI的关系。结果表明,漠河森林NDVI月变化和年变化主要受温度影响,属于温度驱动型;最大密度指数与NDVI年均值间有较强的相关关系;生长季（5～9月）NDVI与当年树轮的最大密度、晚材密度、早材密度和晚材宽度指数相关,但与最小密度、树轮宽度、早材宽度指数关系不显著;夏季（6～8月）NDVI与早材密度指数显著相关,但早材宽度指数却与前一年夏季NDVI有关。就单月NDVI而言,5月份的NDVI与最大密度和晚材密度指数显著相关,而6月份的NDVI与早材密度指数显著相关。从7种树轮指数对区域尺度上的生长季NDVI的指示效果来看,密度指数比宽度指数更有效。 |
| 关 键 词： | 樟子松 树轮指数 标准化植被指数 漠河 |
| 文章编号： | 1001-7410(2005)02-252-06 |
| 收稿时间： | 2004-12-30 |
| 修稿时间： | 2004年12月30 |
THE RELATIONSHIPS BETWEEN MONGOLIAN SCOTCH PINE TREE RING INDICES AND NORMALIZED DIFFERENCE VEGETATION INDEX IN MOHE, CHINA |
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| He Jicheng,Wang Lili,Shao Xuemei.THE RELATIONSHIPS BETWEEN MONGOLIAN SCOTCH PINE TREE RING INDICES AND NORMALIZED DIFFERENCE VEGETATION INDEX IN MOHE, CHINA[J].Quaternary Sciences,2005,25(2):252-257. | |
| Authors: | He Jicheng Wang Lili Shao Xuemei |
| Institution: | 1. Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101; 2. Graduate School of Chinese Academy of Sciences, Beijing 100039; 3. Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085 |
| Abstract: | In boreal conifers of the Chinese Northeast Area, we have acquired tree ring data of the mongolian scotch pine(Pinus sylvestris var. mongolica)and obtained the NDVI data from area surrounding the sampling site in Mohe, the northernmost forest area in China. Seven kinds of tree ring standard indices are calculated by means of program ARSTAN. First, the monthly and annually change of NDVI characteristics are analyzed. Then, the relationships between tree ring indices and NDVI are examined. The results show that: Monthly averaged forest NDVI in Mohe correlates with monthly mean temperature, monthly maximum temperature and monthly minimum temperature. Annually averaged forest NDVI in Mohe correlates with annually maximum temperature. The monthly and annually NDVI change in Mohe is driven by temperature and temperature is a main limit factor to forest growth in Mohe. There is a significant correlation between yearly averaged NDVI and maximum density index. Averaged NDVI of the growing season (from May to September) correlates with maximum density, latewood density, earlywood density and latewood width indices, and doesn't correlate with minimum density, tree ring width and earlywood width indices. Averaged NDVI in summer (from June to August) correlates with earlywood density index significantly, whereas, the effects on earlywood width index are given by averaged NDVI in the previous summer. A significant correlation also exists between NDVI in May and maximum density, latewood density indices, between NDVI in June and earlywood density indices. It seems reasonable that density indices are more effective indicators of landscape forest NDVI for the growing season than width indices. |
| Keywords: | mongolian scotch pine tree ring indices normalized difference vegetation index Mohe |
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