干旱区生态环境知识资源中心(Arid): 施肥对内蒙古短花针茅荒漠草原土壤呼吸的影响

Arid

	施肥对内蒙古短花针茅荒漠草原土壤呼吸的影响
其他题名	Effect of fertilization on soil respiration in the Stipa breviflora desert steppe of Inner Mongolia
	赵巴音那木拉 1; 红梅 1; 梁存柱 2; 包乌云 1; 张佳鑫 1
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2014
卷号	25 期号:3 页码:687-694
中文摘要	2012年在内蒙古短花针茅荒漠草原设置了3个N 肥水平(2. 5、5和10 g N·m~(-2))的不同NPK 配施样地,并以未施肥样地为对照(CK),采用LI-8100土壤碳通量测量系统测定了样地中土壤呼吸速率的日动态和季节变化,分析土壤呼吸速率与环境因子的关系. 结果表明:在植物生长旺盛期(8月),3个N 肥水平中,10 g N·m~(-2)处理的土壤呼吸速率显著高于其他处理,5和2. 5 g N·m~(-2)处理的土壤呼吸速率与CK 无显著差异. 在植物生长初期和中期(5 9月),施P 肥有利于提高土壤呼吸速率. 施肥并未改变荒漠草原土壤呼吸的日动态和季节变化特征. 各处理日变化最高值和最低值分别出现在10: 0014: 00和03: 0005: 00; 季节动态的峰值均出现在8月. 土壤呼吸速率与5 cm 土壤温度及0 ~ 10 cm 土壤含水量显著相关,其决定系数分别在0. 40 ~ 0. 58和0. 51 ~ 0. 70,说明表层土壤含水量是制约土壤呼吸变化的主要环境因子.
英文摘要	In 2012,a field experiment with different fertilizer treatments was conducted in the Stipa breviflora desert steppe of Inner Mongolia. The LI-8100 was used to investigate daily and seasonal variations of soil respiration rate,and the relationships between soil respiration rate and environmental factors were analyzed. The results showed that: 1) In the rapidly growing stage (August),the respiration rate in 10 g N·m~(-2) was significantly higher than in the other treatments. No significant differences were observed among 5 g N·m~(-2),2. 5 g N·m~(-2) and CK. 2) During the early and middle growing stage (May to September),P fertilizer improved the soil respiration rate. 3) Fertilization did not change the daily and seasonal variations of soil respiration. The daily variations of soil respiration of all fertilization treatments were almost the same,with the highest values occurring within 10: 00 - 14: 00 and the lowest values occurring within 03: 00 - 05: 00. The peak of seasonal variation occurred in August. 4) The soil respiration rate was significantly related to soil temperature at 5 cm depth and soil moisture at 0 - 10 cm depth,and the determined coefficients were 0. 40 - 0. 58 and 0. 51 - 0. 70,respectively,indicating that soil moisture was the major factor affecting soil respiration.
中文关键词	土壤呼吸速率 ; 施肥 ; 环境因子 ; 短花针茅荒漠草原
英文关键词	soil respiration rate fertilization environmental factor Stipa breviflora desert steppe
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5094568
来源机构	内蒙古农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231982
作者单位	1.内蒙古农业大学生态环境学院, 呼和浩特, 内蒙古 010019, 中国; 2.内蒙古大学生命科学学院, 呼和浩特, 内蒙古 010021, 中国
推荐引用方式 GB/T 7714	赵巴音那木拉,红梅,梁存柱,等. 施肥对内蒙古短花针茅荒漠草原土壤呼吸的影响[J]. 内蒙古农业大学,2014,25(3):687-694.
APA	赵巴音那木拉,红梅,梁存柱,包乌云,&张佳鑫.(2014).施肥对内蒙古短花针茅荒漠草原土壤呼吸的影响.应用生态学报,25(3),687-694.
MLA	赵巴音那木拉,et al."施肥对内蒙古短花针茅荒漠草原土壤呼吸的影响".应用生态学报 25.3(2014):687-694.