引用本文: | 张艳华,刘禹,宋慧明,雷莺,马永永,王艳超.2013.河南神农山过去162年树轮季节降水重建[J].地球环境学报,(5):1450-1460 |
| ZHANG Yan-hua,LIU Yu,SONG Hui-ming,LEI Ying,MA Yong-yong,WANG Yan-chao.2013.Tree-ring-based seasonal precipitation reconstruction in Mt. Shennong forthe last 162 years[J].Journal of Earth Environment,(5):1450-1460 |
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河南神农山过去162年树轮季节降水重建 |
张艳华1,3,刘 禹1,2,宋慧明1,3,雷 莺1,马永永1,3,王艳超1,2,3
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1. 中国科学院地球环境研究所 黄土与第四纪地质国家重点实验室,西安 710075;
2. 西安交通大学 人居环境与建筑工程学院,西安 710049; 3. 中国科学院大学,北京 100049
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摘要: |
采用河南神农山白皮松轮宽序列,重建了该地区1850—2011 年上年9 月至当年6 月降
水量序列,重建方程方差解释量为42.4%。重建序列显示,在过去162 年中,神农山地区经历了
4 次持续时间超过5 年的严重干旱时段:1860—1879,1888—1913,1917—1945,1992—1998,
以及三次较为湿润的时段:1882—1893,1946—1991,1999—2006。发现研究区在1945 年之前
干旱频发,且持续时间较长。在1945 年之后,持续性干旱事件较少发生,降水量有上升趋势。
神农山降水重建序列与由历史文献记录划分的洛阳和郑州二地旱涝指数及亚洲– 太平洋涛动指
数(APO)相关显著。序列中的干旱事件发生时间与陕西、甘肃、宁夏等地的干旱出现较为一致。
空间相关分析结果显示,重建序列和观测序列分别与CRU TS3.10.01 降水序列相关显著且表现出
相似的空间相关模式,表明神农山降水重建序列较为可靠,在一定程度上能代表更大空间范围
的降水变化。功率谱分析表明,降水重建序列存在2.69 年,2.47 年,2.06 年的准周期,暗示研
究区降水变化可能受到与海陆耦合相关的准两年波动和ENSO 的影响。 |
关键词: 河南神农山 白皮松 树轮宽度 降水量 重建 |
DOI:10.7515/JEE201305004 |
CSTR: |
分类号:P467 |
基金项目:黄土与第四纪地质国家重点实验室开放基金;国家重点基础研究发展计划项目(2013CB955900);中国科学院
重点部署项目(KZZD-EW-04-01);中国科学院地球环境研究所自主部署项目(ZZBS1302)
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Tree-ring-based seasonal precipitation reconstruction in Mt. Shennong forthe last 162 years |
ZHANG Yan-hua1,3, LIU Yu1,2, SONG Hui-ming1,3, LEI Ying1,
MA Yong-yong1,3, WANG Yan-chao1,2,3
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1. State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of
Sciences, Xi'an 710075, China; 2. School of Human Settlement and Civil Engineering, Xi'an Jiaotong University,
Xi'an 710049, China; 3. University of Chinese Academy of Sciences, Beijing 100049, China
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Abstract: |
Based on the tree-ring width of Pinus bungeana Zucc., we reconstructed the precipitation
from previous September to current June during 1850 —2011 in the Mt. Shennong. The reconstruction
explained 42.4% variance of the observation. There are four dry intervals 1860—1879,1888—
1913,1917—1945,1992—1998,and three wet intervals (1882—1893,1946—1991,1999—2006)
in the reconstructed series. Drought events occurred more frequently before 1945, while precipitation
increased after 1945. The reconstructed precipitation series in Mt. Shennong matched well with the
dryness/wetness index series of Luoyang and Zhengzhou areas and the index series of Summer Asian–
Pacific oscillation. Drought events in our series synchronized with drought occurred in Shaanxi, Gansu
and Ningxia regions. The distinct spatial correlation between both observed and reconstructed series and
CRU TS3.10.01 grid data indicated that our results may represent precipitation changes on a larger scale.Power spectrum analysis of the reconstruction showed 2.69-year, 2.47-year, and 2.06-year cycles for
the past 162 years, which indicated precipitation in Shennong region was influenced by Quasi-biennial
oscillation and ENSO. |
Key words: Mt. Shennong, China Pinus bungeana Zucc. tree-ring width precipitation reconstruction |