| 额济纳旗近100 a来胡杨年表的建立与响应分析 |
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| 引用本文： | 刘普幸,陈发虎,勾晓华,彭剑峰,黄小忠.额济纳旗近100 a来胡杨年表的建立与响应分析[J].中国沙漠,2005,25(5):764-768. |
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| 作者姓名： | 刘普幸 陈发虎 勾晓华 彭剑峰 黄小忠 |
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| 作者单位： | 1. 兰州大学,中德干旱环境联合研究中心,西部环境教育部重点实验室,甘肃,兰州,730000;西北师范大学,地理与环境科学学院,甘肃,兰州,730070
2. 兰州大学,中德干旱环境联合研究中心,西部环境教育部重点实验室,甘肃,兰州,730000 |
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| 基金项目： | 科技部重点国际合作项目(2002CB714004)，国家基础研究重点规划资助项目(G2000048701)，国家自然科学杰出青年基金项目(40125001)，甘肃省教育厅项目(031-04)共同资助 |
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| 摘 要： | 在野外采样、室内预处理、交叉定年的基础上,建立了近一百年来额济纳旗胡杨树木年轮年表,并将标准年表的树轮指数与采样点附近额济纳旗气象站的气温、降水及黑河中游正义峡水文站的径流量进行了相关分析。结果表明,年轮宽度指数与春季3~5月径流量和年径流量呈显著负相关,相关系数为-0.642和-0.525。由于该地区降水量为37.9mm,对树木生长的意义不大,径流量则成为胡杨生长的限制因子。正义峡径流量冷季大,暖季小,与该区胡杨的生长季不相吻合。春季树木生长开始,需要一定的水分供给,虽然该区春季径流量仅占全年径流量的16.42%,但是,采样点距离河床较近,地下水位较高,可以满足根系对水分的需要,有利于胡杨生长,因而该相关具有明确的生物学意义。进一步进行响应函数分析的结果表明,重建序列与实测序列较为相近,采用的回归方程比较稳定可信。
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| 关 键 词： | 额济纳旗 胡杨年表 正义峡径流量 响应分析 |
| 文章编号： | 1000-694X（2005）05-0764-05 |
| 收稿时间： | 2004-05-13 |
| 修稿时间： | 2004-06-08 |
Establishment of Tree-ring Chronology and Response Analysis in Past 100 Years for Ejin Banner, Inner Mongolia |
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| LIU Pu-xing,Chen Fa-hu,GOU Xiao-hua,PENG Jian-feng,HUANG Xiao-zhong.Establishment of Tree-ring Chronology and Response Analysis in Past 100 Years for Ejin Banner, Inner Mongolia[J].Journal of Desert Research,2005,25(5):764-768. |
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| Authors: | LIU Pu-xing Chen Fa-hu GOU Xiao-hua PENG Jian-feng HUANG Xiao-zhong |
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| Abstract: | After sampling and finishing experimental work, we established the standardized chronology (STD) from tree-ring data of populus euphratica in northwest region of Ejin Banner in Inner Mongolia. The correlations of the tree-ring index with temperature, precipitation of Ejinaqi station and with streamflom of Zhengyixia station were analyzed. The results indicate that there is negative correlation between the tree-ring index and the streamflow of spring and annual, and the correlation coefficient R are 0.642 and 0.525, respectively. The annual precipitation of 37.9 mm is too small to benefit the plant growth in Ejin Banner. So the streamflow become a limiting factor of plant growth. The streamflow through the Zhengyixia gorge, which is large in cold season and small in warm season, does not match with plant growth season. But the streamflow of spring may meet the need of plant growth, although it is only 16.42 percent of the annual streamflow. Because the sampling site is close to riverbed and the level of groundwater is high, so the correlation is significant in biology. The result of response-function analysis between tree-ring index and streamflow indicated that the reconstructed sequence is similar to the observed sequence of streamflow at Zhengyixia station, which proved that the regression function is stabile and believable. |
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| Keywords: | Ejin Banner populus euphratica chronology streamflow through Zhengyixia gorge response analysis |
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