热带作物学报2018，Vol.39Issue(3)：415-420,6.DOI:10.3969/j.issn.1000-2561.2018.03.001
基于BaPS技术的橡胶林土壤呼吸研究
Soil Respiration of Rubber Plantation by BaPS Technique
摘要
Abstract
Understanding soil respiration and its influence factors are important for formulating soil management practices,cultivating soil organic carbon pool,and assessing regional carbon balance in the rubber plantation ecosystem.Soil respiration rate in response to temperature,soil moisture,sources of carbon and nitrogen in the latosols of rubber plantation was studied by barometric process separation (BaPS) technique.The results showed that the soil respiration rate increased first and decreased with the soil temperature increased in the ranges from 10 ℃ to 30 ℃.In addition,soil respiration rate also showed a significant positive correlation (R2=0.448,p＜0.05) and a significant negative correlation (R2=0.923,p＜0.01) with water-filled pore space (WFPS) in the ranges of 35％ to 60％ and 60％ to 90％,respectively.Compared with no nitrogen fertilization,soil respiration rate (p＜0.05) could be significantly enhanced under low nitrate nitrogen addition (0.5,2.0 and 4.0 g/m2).However,soil respiration rate (p＜0.05) could be significantly inhibited by high ammonium nitrogen addition (10.0-40.0 g/m2).There were significantly negative correlation between the soil respiration rate and the addition amount (4.0-40.0 g/m2) of nitrate nitrogen,ammonium nitrogen (R2=0.282,p＜0.05;Re=0.345,p＜0.05),respectively.On the contrary,soil respiration rate (p＜0.05) could be intensively stimulated by carbon addition (1.0-40.0 g/m2) with compared to no carbon application,and there was highly significantly positive correlation (R2=0.307,p＜0.01) between soil respiration rate and carbon addition.关键词
橡胶林/砖红壤/BaPS/土壤呼吸速率Key words
rubber plantation/latosols/BaPS/soil respiration rate分类
农业科技引用本文复制引用
王大鹏,吴小平,罗雪华,王文斌,张永发,薛欣欣,邹碧霞..基于BaPS技术的橡胶林土壤呼吸研究[J].热带作物学报,2018,39(3):415-420,6.基金项目
国家自然科学基金(No.31400529) （No.31400529）
中国热带农业科学院基本科研业务费项目(No.1630022016017) （No.1630022016017）
国家天然橡胶产业技术体系(No.CARS-33ZP-2) （No.CARS-33ZP-2）
海南省耕地改良专项(No.HNGDzy201502). （No.HNGDzy201502）
