干旱区生态环境知识资源中心(Arid): 疏勒河流域绿洲荒漠过渡带土壤呼吸特征及其影响因素

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	疏勒河流域绿洲荒漠过渡带土壤呼吸特征及其影响因素
其他题名	Characteristics of Soil Respiration and Its Influence Factors in Oasis-Desert Transitional Belt of Shule River Basin
	郭全恩 1; 李保国 2; 南丽丽 3; 曹诗瑜 1; 陈建刚 3
来源期刊	生态环境学报
ISSN	1674-5906
出版年	2016
卷号	25 期号:6 页码:934-938
中文摘要	土壤呼吸是陆地生态系统碳循环研究的关键问题之一。为了研究绿洲荒漠演化过程土壤呼吸的变化特征及其影响因素,运用地统计学的方法分析了500 m间隔取样尺度下甘肃省玉门镇饮马农场一条绿洲荒漠过渡带(荒漠、荒漠-绿洲、绿洲)土壤呼吸速率在不同时期(5、7、10月)的时空变异性,并结合过渡带不同监测点的植被盖度、土壤温度、空气相对湿度、土壤容积含水量以及土壤0~20 cm土层pH值、盐分、HCO_3~-、Cl~-、Ca~(2+)、Mg~(2+)、SO_4~(2-)、K~+、Na~+等理化性质分析,探讨了环境因素与土壤呼吸速率之间的相关性。结果表明:从荒漠向绿洲过渡,土壤呼吸速率从荒漠端的1.21 mumol?m~(-2)?s~(-1)逐渐增大到绿洲端的4.85 mumol?m~(-2)?s~(-1),增加3倍。从季节变化来看,7月份土壤呼吸速率最大,10月份土壤呼吸速率最小,5月份土壤呼吸速率居中。绿洲荒漠过渡带土壤呼吸速率的变异系数为64.1%~78.1%,属中等变异。从空间相关性来看,7月和10月土壤呼吸速率的块金值为0.065和0.113,均小于0.25,空间相关性强;5月份土壤呼吸速率的块金值为0.690,空间相关性中等。研究发现土壤呼吸速率与土壤温度呈极显著正相关关系(P=0.002)。
英文摘要	Soil respiration is one of critical problems to study of carbon cycle in terrestrial ecosystem. The influence factors (vegetation coverage, soil temperature, air humidity, soil moisture, soil salt, pH, HCO_3~-, Cl~-, Ca~(2+), Mg~(2+), SO_4~(2-), K~+, Na~+) and its change characteristics of soil respiration during the different seasons (May, July and October) in oasis-desert transitional belt in Yumen County of Gansu Province are studied by the methods of geostatistics at 500 m sampling scale. Relationships between soil respiration rate and influence factors were analyzed. Results showed that soil respiration in desert was 1.21 mumol?m~(-2)?s~(-1), in oasis was 4.85 mumol?m~(-2)?s~(-1), it was rising four times in oasis than in desert. From the point of view of seasonal variation, soil respiration was the highest in July and the lowest in October, the middle of in May, it belonged to medium variability (10%≤CV≤100%) and coefficient variation (CV) was 64.1%~78.1%, the nugget was 0.065 and 0.113 in July and October, respectively, both of them were less than 0.25, a strong spatial correlation is seen between soil respiration in desert and oasis, moreover, spatial correlation was median and the nugget was 0.690 in May. It was found that there was a significantly positively correlation between soil respiration and soil temperature (P=0.002).
中文关键词	疏勒河流域 ; 绿洲荒漠过渡带 ; 土壤呼吸 ; 季节变化 ; 影响因素
英文关键词	Shule river basin oasis-desert transitional belt soil respiration seasonal variation influence factors
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5776909
来源机构	甘肃农业大学 ; 中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/234720
作者单位	1.甘肃省农业科学院土壤肥料与节水农业研究所, 农业部甘肃耕地保育与农业环境科学观测实验站, 兰州, 甘肃 730070, 中国; 2.中国农业大学资源与环境学院, 北京 100094, 中国; 3.甘肃农业大学草业学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	郭全恩,李保国,南丽丽,等. 疏勒河流域绿洲荒漠过渡带土壤呼吸特征及其影响因素[J]. 甘肃农业大学, 中国农业大学,2016,25(6):934-938.
APA	郭全恩,李保国,南丽丽,曹诗瑜,&陈建刚.(2016).疏勒河流域绿洲荒漠过渡带土壤呼吸特征及其影响因素.生态环境学报,25(6),934-938.
MLA	郭全恩,et al."疏勒河流域绿洲荒漠过渡带土壤呼吸特征及其影响因素".生态环境学报 25.6(2016):934-938.