生态环境学报Issue(3)：430-438,9.
施肥及环境因子对海南热带橡胶林土壤呼吸的影响
Effect of fertilization and environmental factors on soil respiration in tropical rubber plantation in Hainan
摘要
Abstract
This paper takes Hainan tropical mature forest soil of rubber plantation as the research object, through the use of infrared gas analysis, combined with the positioning of the experimental observation in environmental factors and artificial fertilization measures. There are three treatments(Application of organic fertilizer(T1), Application of inorganic fertilizer(T2) and no fertilizer(CK)) have been set up in the experiment, and to reveal the relationship between soil respiration and environmental factors and the formation mechanism of fertilization measures, so as to further reveal the mechanism and process of the tropical rubber plantation soil respiration future, for accurate simulation of carbon cycling processes in tropical soil, through the data of soil management practices and environmental factors control adjusting the rubber plantation soil CO2 emission and carbon provides scientific basis for absorption. The results show that 3 treatments of rubber plantation soil respiration rate showed a single peak curve, the peak appeared at about 13:00, respectively:2.63 µmol·m-2·s-1, 3.74 µmol·m-2·s-1 and 2.98 µmol·m-2·s-1, the lowest point in the morning about 4:00 at respectively: 0.43 µmol·m-2·s-1, 0.89 µmol·m-2·s-1 and 0.51 µmol·m-2·s-1. In the cycle, 3 types of rubber plantation soil respiration rate was increased with the increasing of temperature, synchronized with the change trend of temperature;soil respiration and temperature has a significant relationship with soil respiration, which 5cm temperature the best correlation (0.572<R2<0.737) changes can explain better soil respiration. The soil respiration and soil moisture correlation is weak (0.189<R2<0.367), the values of P did not reach significant level (P>0.05), showed no obvious regularity. The changes in the rubber plantation soil respiration rate under different fertilization, organic fertilizer soil respiration rate was the highest (2.07µmol·m-2·s-1), followed by the application of inorganic fertilizer treatment (1.59µmol·m-2·s-1), the lowest is no fertilizer treatment (1.16µmol·m-2·s-1).关键词
土壤呼吸/橡胶林/不同施肥/土壤温度/土壤水分Key words
soil respiration/rubber plantation/fertilizations/soil temperature/soil moisture分类
农业科技引用本文复制引用
谢明德,陈明智,吴蔚东,孙红亮..施肥及环境因子对海南热带橡胶林土壤呼吸的影响[J].生态环境学报,2014,(3):430-438,9.基金项目
海南省自然科学基金项目 （）
