【作者】 阿斯嘎； 高丽； 朴顺姬； 闫志坚； 马阔东；

【Author】 Asga~1 GAO Li~(2*) PIAO Shun-ji~1 YAN Zhi-jian~2 MA kuo-dong~(23) (1.College of Life Sciences of Inner Mongolia University,Hohhot 010021,China; 2.Grassland Research Institute of Chinese Academy of Agricultural Sciences,Hohhot 010010,China; 3.Gansu Agricultural University,Lanzhou 730070,China)

【机构】 内蒙古大学生命科学学院； 中国农业科学院草原研究所； 甘肃农业大学草业科学系；

【摘要】 本文研究了陆地生态系统物质循环和能量流动的一个最主要环节——土壤呼吸。通过对半干旱区自然状况下的库布齐沙地土壤呼吸进行测定与分析得出以下结论:1、半干旱地区沙地的土壤呼吸速率值与土壤含水量具有相关性,但在小时间尺度上与土壤温度没有相关性;2、半干旱地区沙地的土壤呼吸速率值与土壤细菌数量、土壤固氮菌数量具有相关性,但与土壤真菌数量、土壤放线菌数量没有相关性;3、半干旱地区沙地的土壤呼吸速率值与植被生物量具有相关性,无论是地上生物量还是地下生物量均与土壤呼吸速率有相关性。这些结论将增进人们对半干旱区沙地土壤呼吸及其影响因素的了解,最终更准确的认识陆地生态系统的物质循环和能量流动。更多还原

【Abstract】 The aim of this study was to investigate the soil respiration that is the great impor- tance in mass circulation and energy flow through ecosystems.We mensurate and analysis the soil res- piration of in semi—arid region sand dune,the results as follow:1、The soil respiration were related to soil moisture,but unrelated to the soil temperature in semi—arid region sand dune;2、The soil respira- tion were related to Bacterial population and fungus population,but unrelated to the actinomyces popu- lation and azotobact population in semi—arid region sand dune;3、The soil respiration were related to vegetation biomass,with include overground biomass and underground biomass in semi—arid region sand dune.This article will help us to realize the soil respiration all the more,and understand the mass circulation and energy flow through ecosystems ultimately.更多还原