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利用开路式土壤碳通量测量系统-LI-8100对塔里木河下游6种土地利用方式下土壤呼吸速率的日变化进行了野外定位测量,并就水热因子及土壤理化性质对土壤日呼吸速率差异的影响进行了分析。结果表明,梨园、弃耕地、棉田、人工林、草地和天然林土壤呼吸速率日变化均呈单峰曲线,土壤日呼吸速率差异显著。大气温度和土地利用方式是造成土壤日呼吸差异的主要因素,其中土地利用方式通过改变地表温度、土壤水分、电导率、pH、盐分含量及机械组成等影响土壤日呼吸速率。
The open field soil carbon flux measurement system-LI-8100 was used to measure the diurnal variation of soil respiration rate under six land use patterns in the lower reaches of Tarim River. The differences of soil respiration rate between soil moisture and soil moisture The impact of the analysis. The results showed that the diurnal changes of soil respiration rate in pear orchards, abandoned farmlands, cotton fields, artificial forests, grasslands and natural forests showed a single peak curve with significant differences in soil respiration rate. Atmospheric temperature and land use patterns were the main factors that caused the differences in daily respiration of soils. Land use patterns affected soil respiration rate by changing the surface temperature, soil moisture, electrical conductivity, pH, salt content and mechanical composition.