干旱区生态环境知识资源中心(Arid): 天山北坡荒漠草原土壤呼吸和生态系统呼吸对降水的响应

Arid

	天山北坡荒漠草原土壤呼吸和生态系统呼吸对降水的响应
其他题名	Responses of Soil Respiration and Ecosystem Respiration to Precipitation in Desert Steppe on the Northern Slope of Tianshan Mountains
	郭文章; 井长青; 王公鑫; 侯志雄; 赵苇康
来源期刊	草地学报
ISSN	1007-0435
出版年	2021
卷号	29 期号:9 页码:2031-2039
中文摘要	为揭示降水对天山北坡荒漠草原土壤呼吸和生态系统呼吸的影响,本实验以天山北坡荒漠草原为研究对象,通过测定3种模拟降水处理(CK,5mm,18mm,28mm)下荒漠草原土壤呼吸速率和生态系统呼吸速率的变化特征。结果表明:不同降水处理下土壤呼吸速率和生态系统呼吸速率有明显的日变化趋势;3种降水处理下(28mm, 18mm,5mm)土壤呼吸速率较CK显著增加了22.93%,23.20%,12.07%,生态系统呼吸速率较CK显著增加了216.81%,153.27%,39.35%;不同降水处理下土壤呼吸速率和生态系统呼吸速率与土壤温度均表现为显著正相关关系;荒漠草原土壤呼吸速率与土壤含水量呈二次函数关系,生态系统呼吸速率与土壤含水量呈线性关系。因此,降水是影响天山北坡荒漠草原土壤呼吸速率和生态系统呼吸速率的主要因素。
英文摘要	To reveal the impact of precipitation on soil respiration and ecosystem respiration in the desert steppe ecosystem on the northern slope of the Tianshan Mountains.This experiment took the desert steppe on the northern slope of Tianshan Mountain as the research object,and measured the characteristic changes of the soil respiration and ecosystem respiration of the desert steppe under three simulated precipitation treatments(CK,5mm,18mm,28mm).The results show that soil respiration and ecosystem respiration have obvious diurnal changes under different precipitation treatments.Compared with CK,the soil respiration under the three precipitation treatments(28 mm,18 mm,5 mm)increased significantly by 22.93%,23.20%,and 12.07%,respectively.Compared with CK,the ecosystem respiration under the three precipitation treatments(28 mm,18 mm,5 mm)increased significantly by 216.81%,153.27%,and 39.35%,respectively.Under different precipitation treatments,the soil respiration rate and ecosystem respiration rate showed a significant positive correlation with soil temperature.The relationship between soil respiration and soil water content in the desert steppe is quadratic,and the relationship between ecosystem respiration and soil water content is linear.Therefore,precipitation is the main factor affecting the soil respiration and ecosystem respiration of the desert steppe.
中文关键词	荒漠草原 ; 土壤呼吸速率 ; 生态系统呼吸速率 ; 降水
英文关键词	Desert steppe Soil respiration Ecosystem respiration Precipitation
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:7084355
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377504
作者单位	郭文章, 新疆农业大学草业与环境科学学院, 新疆草地资源与生态重点实验室, 乌鲁木齐, 新疆 830052, 中国.; 井长青, 新疆农业大学草业与环境科学学院, 新疆草地资源与生态重点实验室, 乌鲁木齐, 新疆 830052, 中国.; 王公鑫, 新疆农业大学草业与环境科学学院, 新疆草地资源与生态重点实验室, 乌鲁木齐, 新疆 830052, 中国.; 侯志雄, 新疆农业大学草业与环境科学学院, 新疆草地资源与生态重点实验室, 乌鲁木齐, 新疆 830052, 中国.; 赵苇康, 新疆农业大学草业与环境科学学院, 新疆草地资源与生态重点实验室, 乌鲁木齐, 新疆 830052, 中国.
推荐引用方式 GB/T 7714	郭文章,井长青,王公鑫,等. 天山北坡荒漠草原土壤呼吸和生态系统呼吸对降水的响应[J],2021,29(9):2031-2039.
APA	郭文章,井长青,王公鑫,侯志雄,&赵苇康.(2021).天山北坡荒漠草原土壤呼吸和生态系统呼吸对降水的响应.草地学报,29(9),2031-2039.
MLA	郭文章,et al."天山北坡荒漠草原土壤呼吸和生态系统呼吸对降水的响应".草地学报 29.9(2021):2031-2039.