气候影响下祁连山自然保护区青海云杉林材积生长量差异性研究  

The influence of climate on the difference of stem volume of Qinghai spruce in Qilian Mountains

作　　者：刘铮[1] 白英[1] 赵传燕[2] 南忠仁[1] 

机构地区：[1]兰州大学资源环境学院,兰州730000 [2]兰州大学生命科学学院,兰州730000

出　　处：《干旱区资源与环境》2014年第7期171-176,共6页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金项目(No.91025015)资助

摘　　要：以祁连山自然保护区的青海云杉为研究对象,利用野外225个采样点观测数据分析青海云杉在1960年~2007年的材积生长量差异性。首先利用主成分聚类分析将采样点分为4个不同的气候区,然后对比分析了各气候区的青海云杉材积生长量的差异。结果表明：对青海云杉材积生长有重大影响的气候因子为年均温、生长季最低温、7月均温和7月降水量;祁连山青海云杉分布区可以分为4个不同的气候区,区间气候差异较大;祁连山自然保护区东部地区的青海云杉材积生长量要高于中部地区。研究结果显示,在祁连山自然保护区复杂的气候影响下,各气候区之间青海云杉材积生长量具有显著的差异。Qilian mountainous area in Gansu province was selected as our study area and Qinghai spruce as the study object. Based on measured data in 225 sampling plots, the stem volumes of Qinghai spruce between 1960 and 2007 was calculated. Firstly, we divided the distribution area of Qinghai spruce in Qilian Mountains into 4 different climatic regions. Secondly, we compared the stem volumes among different climatic regions. The results showed that the important climate factors influencing the stem volume of Qinghai spruce were annual average temperature, minimum temperature in growing season, mean temperature in July and precipitation in July. The dis- tribution areas of Qinghai spruce were divided into 4 different climatic regions, and there were large climatic differences between climatic regions. The stem volume in the east part of Qilian Mountains was bigger than that in the middle parts. From the study, we could draw conclusion that there was the significant difference of the stem volume of Qinghai spruce between climatic regions in Qilian Mountains under the influence of climate.

关 键 词：祁连山 青海云杉 材积生长量 气候因子 

分 类 号：S718.55[农业科学—林学]