| 内蒙古草原沙地白扦年轮生长指数的变异 |
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| 引用本文： | 梁尔源,邵雪梅,胡玉熹,林金星.内蒙古草原沙地白扦年轮生长指数的变异[J].植物生态学报,2001,25(2):190-194. |
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| 作者姓名： | 梁尔源 邵雪梅 胡玉熹 林金星 |
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| 作者单位： | 1. 中国科学院植物研究所, 北京 100093
2. 中国科学院地理研究所, 北京 100101 |
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| 基金项目： | 国家自然科学基金资助项目(49971079，3980020，39600021) |
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| 摘 要： | The variation in ring growth indices of Picea meyeri was assessed by dendrochronological techniques including response functions, correlation functions and single-year analysis on sandy dunes in the Xilin River basin steppe. The results show that growth of Picea meyeri was sensitive to climate change. Furthermore, it was determined that mean monthly temperature and total monthly precipitation from September of the current year to August of the preceding year can account for about 70% of the variance in the tree-ring width. The rainfalls in February and May of the current year together with that of the previous September were significantly correlated with the current year’s growth pattern. Additionally ,radial growth was negatively correlated with mean monthly temperature in current May. In this region the sandy substrate is characterized by high water infiltration and low soil moisture evaporation rates. As a result, relatively high precipitation from prior August to prior October can be reserved in the sandy soil and the Picea meyeri trees show strong adaptation to the sandy substrate in these se- mi-arid grasslands. Therefore, the establishment of Picea meyeri forest plantations in the sandy belt along the middle reaches of Xilin River are deemed feasible.
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| 关 键 词： | 白扦 年轮 沙地 |
| 修稿时间： | 2000年3月9日 |
VARIATION IN TREE RING
GROWTH INDICES OF PICEA MEYERI FROM THE SANDY LAND IN THE STEPPE OF INNER MONGOLIA |
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| LIANG Er-Yuan,SHAO Xu-Mei,HU Yu-Xi and LIN Jin-Xing.VARIATION IN TREE RING
GROWTH INDICES OF PICEA MEYERI FROM THE SANDY LAND IN THE STEPPE OF INNER MONGOLIA[J].Acta Phytoecologica Sinica,2001,25(2):190-194. |
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| Authors: | LIANG Er-Yuan SHAO Xu-Mei HU Yu-Xi and LIN Jin-Xing |
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| Abstract: | The variation in ring growth indices of Picea meyeri was assessedby dendrochronological techniques including response functions, correlation functions and single-year analysis on sandy dunes in the Xilin River basin steppe. The results show that growth of Picea meyeri was sensitive to climate change. Furthermore, it was determined that mean monthly temperature and total monthly precipitation from September of the current year to August of the preceding year can account for about 70% of the variance in the tree-ring width. The rainfalls in February and May of the current year together with that of the previous September were significantly correlated with the current year's growth pattern. Additionally,radial growth was negatively correlated with mean monthly temperature in current May. In this region the sandy substrate is characterized by high water infiltration and low soil moisture evaporation rates. As a result, relatively high precipitation from prior August to prior October can be reserved in the sandy soil and the Picea meyeri trees show strong adaptation to the sandy substrate in these semi-arid grasslands. Therefore, the establishment of Picea meyeri forest plantations in the sandy belt along the middle reaches of Xilin River are deemed feasible. |
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| Keywords: | Picea meyeri Tree ring Sandy land |
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