干旱区生态环境知识资源中心(Arid): 封育对宁夏荒漠草原土壤有机碳矿化的影响

Arid

	封育对宁夏荒漠草原土壤有机碳矿化的影响
其他题名	Effects of enclosure on soil organic carbon mineralization of desert steppe in Ningxia
	陶利波 1; 王建军 2; 王国会 1; 于双 1; 李惠惠 3; 许冬梅 1
来源期刊	浙江农业学报
ISSN	1004-1524
出版年	2017
卷号	29 期号:9 页码:1549-1554
中文摘要	以空间梯度代替时间梯度,在宁夏盐池县选择未封育及封育3、5、8、11 a的荒漠草原为研究样地,采用室内恒温培养的方法,测定不同封育年限草地土壤有机碳矿化潜力。结果表明,草地土壤有机碳累积矿化量随封育年限的延长总体呈增加趋势,表现为封育11 a草地>封育8 a草地>封育5 a草地>未封育草地>封育3 a草地。不同封育年限草地土壤有机碳矿化速率均以培养初期最大,随培养时间的延长迅速下降,但从第7天开始略有上升,第13天时又达到较高水平,之后开始逐渐下降,至第27天趋于平稳。不同封育年限草地土壤潜在矿化碳库(C_0)由高到低为封育11 a草地>封育8 a草地>未封育草地>封育5 a草地>封育3 a草地。封育8 a的草地土壤半衰期最短,显著(P<0.05)低于其他封育年限及未封育草地。因此,根据土壤有机碳矿化特征以及植被恢复状况,对封育5 a左右的宁夏荒漠草原可考虑适度利用。
英文摘要	In the present study, grazing grassland and grassland enclosed for 3, 5, 8, 11 a of desert steppe were selected as study objects in Yanchi County, Ningxia Province, to study the soil organic carbon mineralization potential by indoor constant temperature incubation. It was shown that with the increase of enclosing year, the accumulative soil organic carbon mineralization showed an increasing trend as 11 a enclosed grassland>8 a enclosed grassland>5 a enclosed grassland>grazing grassland>3 a enclosed grassland. From the 1~(st) day to the 7~(th) day, the mineralization rates decreased rapidly. From the 7~(th) day to the 13~(th) day, the rates rose slowly. Then, the rates decreased until the 27~(th) day to be stable. With different enclosing year, the amount of potential mineralization carbon pools (C_0) of the grassland decreased in sequence of 11 a enclosed grassland>8 a enclosed grassland>grazing grassland>5 a enclosed grassland>3 a enclosed grassland. The soil half-life of 8 a enclosed grassland was significantly (P<0.05) lower than others. Therefore, according to the soil organic carbon mineralization characteristics and the situation of vegetation restored, the grassland could be appropriately used after enclosing for 5 years.
中文关键词	封育 ; 荒漠草原 ; 土壤有机碳矿化 ; 潜在矿化碳库
英文关键词	enclosure desert steppe soil organic carbon mineralization potential mineralization carbon pool
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:6102343
来源机构	宁夏大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236946
作者单位	1.宁夏大学农学院, 西北土地退化与生态恢复宁夏省部共建国家重点实验室培育基地, 银川, 宁夏 750021, 中国; 2.宁夏同心县同心中学, 同心, 宁夏 751300, 中国; 3.宁夏大学农学院, 银川, 宁夏 750021, 中国
推荐引用方式 GB/T 7714	陶利波,王建军,王国会,等. 封育对宁夏荒漠草原土壤有机碳矿化的影响[J]. 宁夏大学,2017,29(9):1549-1554.
APA	陶利波,王建军,王国会,于双,李惠惠,&许冬梅.(2017).封育对宁夏荒漠草原土壤有机碳矿化的影响.浙江农业学报,29(9),1549-1554.
MLA	陶利波,et al."封育对宁夏荒漠草原土壤有机碳矿化的影响".浙江农业学报 29.9(2017):1549-1554.