【摘要】 应用线性回归方法分析榆林沙区灌丛植被与生长期(5-9月)降水量、平均气温空间变化的相关性。结果表明:1榆林沙区灌丛植被沙地柏生长量与生长期降水关系十分密切,呈正相关,相关系数为0.991。2榆林沙区灌丛植被生物量与生长期降水关系十分密切,呈正相关,相关系数为0.753。3榆林沙区灌丛植被生长量、生物量与生长期平均气温无线性关系,平均气温微弱的变化不足以引起植被生长量与生物量的变化。4在正常气温下,灌丛植被的生长直接受降水的影响,这主要是因为灌丛根系较浅,对地下水的依赖程度较低。更多还原

【Abstract】 Linear regression analysis on correlation between Yulin desert shrub vegetation,the average temperature and precipitation change in growth period(5-9months)was conducted The results show that:1 The relationship between Yulin desert shrub Sabina vulgaris growth and precipitation in growth period is very close,positive correlation,the correlation coefficient is 0.991.2The relationship between Yulin desert shrub vegetation biomass and precipitation in growth period is close,positive correlation,the correlation coefficient is 0.753.3No linear relationship between Yulin desert shrub vegetation growth,biomass and the average temperature in growth period,little change was not enough to cause the change of vegetation growth and biomass.4In the normal temperature,shrub vegetation growth is directly influenced by precipitation,because the shrub root is shallow,low dependence on groundwater.更多还原