西南林业大学学报2017，Vol.37Issue(2)：25-29,5.DOI:10.11929/j.issn.2095-1914.2017.02.004
高寒地区增加土壤温度对暴马丁香光合特性的影响
The Effect of Increasing Soil Temperature on Photosynthetic Characteristics of Syringa reticulata in Alpine Permafrost
摘要
Abstract
In order to promote the growth of Syringa reticulata in the high altitude permafrost areas,this study increased soil temperature artificially through the system of ceramic solar collectors,and set up 4 warming gradients of 2.0 ℃ (S1),3.0 ℃ (S2),4.0 ℃ (S3),5.0 ℃ (S4),and 1 CK control group,respectively,to analyse the changes of photosynthetic rate,transpiration rate,stomatal conductance,intercellular CO2 concentration changes under different soil temperatures of S.reticulata's leaves.The results showed that in 4 treatments,the net photosynthetic rate of the group of S3 and S4 were larger,and the growth rate was 13.16％ and 16.65％,respectively.The transpiration rate and stomata1 conductance of S4 were the largest and the growth rate was 58.89％ and 9.17％,respectively.The intercellular CO2 concentration of S3,S4 were the highest,and the growth rate was 14.63％ and 20.43％,respectively.It was indicated that soil temperature has a very significant relation with net photosyntheticrate,stomatal conductance and intercellular CO2 concentration,and soil temperature and the transpiration rate were significantly related.Based on the analysis of the indicators all above,it showed that it was the most appropriate condition for S.reticulata growth to increased soil temperature by 4.0 ℃ to 5.0 ℃.关键词
高寒地区/土壤温度/暴马丁香/光合特性Key words
alpine area/soil temperature/Syringa reticulata/photosynthetic characteristics分类
农业科技引用本文复制引用
赵萌君,司剑华,袁雅丽,乔建华..高寒地区增加土壤温度对暴马丁香光合特性的影响[J].西南林业大学学报,2017,37(2):25-29,5.基金项目
天峻县高海拔冻土层造林试验示范项目(2011012)资助. （2011012）
