【作者】 杨泽龙； 巴彦； 陈杰； 秦美丽；

【Author】 Yang Ze-Long~1 Ba Yan~1 Chen Jie~2 Qin Mei-Li~(3,4) (1.Inner Mongolia Meteorology Institute,Huhhot 010051;2.Inner Mongolia Meteorological Bureau;3.Life Science and Technology Institute,Inner Mongolia Normal University;4.Dalate Banner Middle School No.2 of Inner Mongolia)

【机构】 内蒙古自治区气象科学研究所； 内蒙古自治区气象局； 内蒙古师范大学生命科学与技术学院；

【摘要】 密度是反映种群数量动态的重要指标,本文以1994～2000年间内蒙古阿拉善锡林高勒地区荒漠灌木的定位观测资料为基础,以灰色关联分析的方法在当年全年、当年生长季、当年旺盛生长季、上年全年、上年生长季和上年旺盛生长季共6个间隔时段上,分析了5种荒漠灌木种群密度与日平均气温、日平均最高气温、日平均最低气温、降水和0～20cm、20～80cm 地温6个水热气候因子的关联性。结果表明,当年全年是荒漠灌木密度与热量因子关联较好的时段,与降水关联较好的时段是当年生长季。对于5个灌木种种群密度与热量因子的关联性,刺叶柄棘豆与日平均气温的关联度高于与其他4个热量因子的关联度;白刺与0～20cm 地温的关联度高于与其他4个热量因子的关联度;其他3个灌木种则均与日平均最低气温具有较高的关联度。对于与水分因子的关联性,除霸王与降水的关联度小于与热量因子的关联度外,其他4 个灌木种与降水的关联度均大于与各热量因子的关联度。更多还原

【Abstract】 Density is an important index to reflect numeral dynamic of species population.Based on the data of seven years’ locating observation on desert shrub at Xilingaole area of Aiashan League in Inner Mongolia from 1994 to 2000,the relevance of population densities of five desert shrub species to six water-heat factors[Average Air Temperature(AT),Average Highest Air Temperature(HAT),Average Lowest Air Temperature(LAT), Precipitation(Pr) and Ground Temperature (GT) of 0～20cm and 20～80cm],was analyzed on six time intervals [Annual Period (AP,January to December),Growth Period(GP,April to October),Flourishing Growth Period (FGP,June to August),Last Annual Period(LAP,January to December),Last Growth Period(LGP,April to October) and Last Flourishing Growth Period(LFGP,June to August)] with the method of gray relational analysis.The results showed that:1) Annual Period (AP,January to December) is a good time scale for analyzing the influence of heat factors on the density of desert shrub,and Growth Period(GP,April to October) is a good time scale for analyzing the influence of precipitation;2) For relevance of heat factors,the relevance degree of Oxytropis aciphylla to Average Air Temperature(AT) is higher than to other four heat factors;the relevance degree of Nitraria sibirica to Ground Temperature (GT) of 0～20cm is higher than to other four heat factors;and other three shrub species is relevant to Lowest Air Temperature(LAT) higher.For relevance of water factors,except for ZygophyUum pterocarpum having lower relevance to precipitation than to heat factors,the relevance of other four species to precipitation is higher than heat factors.更多还原