生态学杂志2017，Vol.36Issue(11)：3235-3242,8.DOI:10.13292/j.1000-4890.201711.034
近45年内蒙古大兴安岭林区不同等级降水变化特征
Dynamic characteristics of different grade precipitation events during past 45 years in Daxing'anling forest region, Inner Mongolia
摘要
Abstract
Based on the daily precipitation observation data of 11 meteorological stations from 1971 to 2015 in Inner Mongolia Daxing'anling forest region,the linear regression,inverse distance weighted (IDW) interpolation and Morlet wavelet analysis method were employed to analyze the spatiotemporal dynamics of precipitation days and intensity at different grades in Daxing'anling forest region,Inner Mongolia.The results showed that:(1) Light-rain days showed a decreasing trend,while the variation trends of moderate-and heavy-rain days were not obvious.The variation trend in annual precipitation intensity at each grade was not significant.The fluctuation of heavy-rain intensity tended to be gentle after 2000.(2) The average contribution rate of precipitation at different grades was in the order of heavy rain＞moderate-rain＞light rain.(3) Different grades of precipitation intensity showed different periodic variation patterns on different time scales.The light-rain showed periodic variations on 7,13,19,27 a,moderate-rain on 22 and 10 a,and heavy rain on 25 and 7 a.(4) Spatially,moderate-rain days,heavy-rain days and precipitation intensity at all levels showed a gradual increase trend from the west to the east,while light-rain days showed an opposite pattern.(5) There was no significant difference in spatial variation of annual precipitation in Daxing'anling forest region.The results can provide basic reference for forestry and agricultural production in this region.关键词
大兴安岭林区/降水日数/降水强度/时空变化Key words
forest region of Daxing'anling/precipitation days/precipitation intensity/spatiotemporal dynamics引用本文复制引用
王冰,边玉明,张秋良,代海燕..近45年内蒙古大兴安岭林区不同等级降水变化特征[J].生态学杂志,2017,36(11):3235-3242,8.基金项目
国家重点研发计划“典型脆弱生态修复与保护研究”重点专项(2017YFC0504000)和中国科学院野外站联盟项目(KFJ-SW-YW026)资助. （2017YFC0504000）
