2）无根土壤呼吸（R1）测定点 在距离每个土壤总呼吸测定点1m左右设置5m×5m的样方，布设植物根系呼吸（Rroot）的观测点。 ①在样方四周挖壕沟深至植物根系分布层以下约0.5m～1m。
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Root respiration rate was obviously affected by tenperature, water stress and nutrient availability in short-term treatment.
温度升高、水分胁迫和养分供给量,在短期内对根系呼吸均有极显著影响。
参考来源 - 油松、侧柏、白皮松根系径级结构及其与呼吸特性关系的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
根系生物量的大小是决定土壤总呼吸以及根系呼吸的主要生物因子。
Root biomass was the main biological factor that determine soil total respiration amount and root respiration amount.
土壤总呼吸速率对土壤湿度的敏感程度大于根系呼吸，断根土壤呼吸速率对土壤湿度的敏感程度最差。
Soil humidity had a larger effect on total soil respiration than on root respiration and root-wrenched soil respiration.
覆草旱作的根冠比(0.116)显著大于常规水稻(0.087)，前者的根系呼吸强度是常规水稻的2.7倍。
Root to shoot ratio of upland rice (0.116) was remarkably bigger than that of paddy rice (0 087). Root respiration rate of the former was 2.7 times of the latter.
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