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本文采用静态碱液(NaOH溶液)吸收法来测定赣南红壤地区不同土地利用方式下的土壤呼吸,总结其释放规律。研究表明,农田和旱地的的CO2释放量均为正值,但是CO2的释放量存在着区别,同时这两种土地利用类型土壤呼吸都有明显的日变化和季节变化,并且土壤呼吸与温度的变化有相关性。通过模拟,农田和旱地土壤呼吸与土温有较好的指数关系,并且通过计算:农田和旱地的土壤呼吸对温度的敏感性(Q10)存在差异,农田和旱地对地下5cm处土温的敏感性分别为3.66、5.56,农田的Q10值要小于旱地。
In this paper, the static lye (NaOH solution) absorption method was used to determine soil respiration under different land use patterns in red soil region of southern Jiangxi Province, and the release rule was summarized. Studies have shown that the CO2 emission in farmland and dryland are both positive, but there is a difference in the amount of CO2 released, and both the daily and seasonal variations of soil respiration in both land use types and soil respiration and temperature Changes are related. Through simulating, the soil respiration and soil temperature in farmland and dryland have a good exponential relationship, and by calculating: the sensitivity of soil respiration to farmland and dry land (Q10) is different, the sensitivity of farmland and dry land to soil temperature 5cm underground Sexuality is 3.66,5.56 respectively, the farmland Q10 value is smaller than the dry land.