新疆农业科学2011，Vol.48Issue(10)：1834-1840,7.
准噶尔盆地荒漠-绿洲过渡区土壤呼吸特征
朱宏伟 1夏军 1曹国栋 1王绍明 1张霞 1杨瑞阳2
作者信息
- 1. 石河子大学生命科学学院,新疆石河子,832003
- 2. 兰州大学生命科学学院,兰州,730000
- 折叠
摘要
Abstract
[ Objective l this study was intended to study soiI respiration characteristics at typicaI mountain - basin Iandscape in different Iand use patterns, to provide data support for understanding the carbon cycIing in arid areas. [ Method l SoiI respiration was monitored both in naturaI and agricuIturaI practise by LI -8l00 carbon fIux measurement system at two growth periods in a typicaI desert - oasis transition zone in north Xinjiang. [ Result l The resuIts showed that the diurnaI variation of soiI respiration under different vegetation cover is unimodaI curve* and the highest respiration rate appears at l400-l600 in a day* the minimum vaIue occurs at 200 -400 The average respiratory rate of soiI during the pIants fIorescence is significantIy higher than that in phase of decIine The trend of daiIy variation of 0-5, 5-l0, l0-20 cm soiI temperature is very cIose with that of soiI respiration. [ conclusion l The characteristics of soiI respiration differs greatIy among different Iand use/cover types. SoiI temperature was a key factor affecting soiI respiration.关键词
carbon process/ Iand use/cover change/ soiI respiration/ soiI temperature/ environmental factorsKey words
carbon process/ Iand use/cover change/ soiI respiration/ soiI temperature/ environmental factors引用本文复制引用
朱宏伟,夏军,曹国栋,王绍明,张霞,杨瑞阳..准噶尔盆地荒漠-绿洲过渡区土壤呼吸特征[J].新疆农业科学,2011,48(10):1834-1840,7.
