生态学杂志2016，Vol.35Issue(3)：584-590,7.DOI:10.13292/j.1000-4890.201603.016
极端干旱区增雨对泡泡刺(Nitraria sphaerocarpa)群落土壤呼吸温度敏感性的影响
Effects of rain supplementation on the temperature sensitivity of soil respiration in Nitraria sphaerocarpa community in a hyperarid area of Dunhuang, China
摘要
Abstract
In order to analyze the effects of rain supplementation on soil respiration rate of Nitraria sphaerocarpa community,we measured the temperature sensitivity of respiration (Q10) from bare and vegetated soils in a hyperarid area (Dunhuang) during the growing season.The results showed that Q10 was enhanced significantly with the increase in rain supplementation in the bare soils,but there was no obvious influence on Q10 of the vegetated soils.The rain supplementation (16 mm,200％ of the control) significantly increased the Q10 of the bare soils by 28％ (P＜0.05).There was a significant positive correlation between Q10 and soil water content during the growing season (P＜0.001),and the sensitivity of Q10 to soil water content was higher in the bare soils (1.94) than in the vegetated soils (1.57).关键词
土壤呼吸/人工增雨/土壤呼吸的温度敏感性Key words
soil respiration/rain supplementation/temperature sensitivity of soil respiration (Q10)引用本文复制引用
刘殿君,张金鑫,卢琦,李旭,武哲..极端干旱区增雨对泡泡刺(Nitraria sphaerocarpa)群落土壤呼吸温度敏感性的影响[J].生态学杂志,2016,35(3):584-590,7.基金项目
“十二五”科技支撑项目(2012BAD16B01)、林业公益性行业科研专项经费(201104077)和林业科学技术研究项目(CAF201202)资助. （2012BAD16B01）
