干旱区生态环境知识资源中心(Arid): 种植花椒对喀斯特石漠化地区土壤有机碳矿化及活性有机碳的影响

Arid

	种植花椒对喀斯特石漠化地区土壤有机碳矿化及活性有机碳的影响
其他题名	Effects of Chinese Prickly Ash Orchard on Soil Organic Carbon Mineralization and Labile Organic Carbon in Karst Rocky Desertification Region of Guizhou Province
	张文娟 1; 廖洪凯 2; 龙健 2; 李娟 3; 刘灵飞 2
来源期刊	环境科学
ISSN	0250-3301
出版年	2015
卷号	36 期号:3 页码:1053-1059
中文摘要	以贵州西南部典型石漠化治理示范区内5年、 17年、 30年生花椒林和乔木林(约60年)土壤为对象,采用室内模拟培养方法研究了0~15、 15~30、 30~50 cm这3个剖面土壤有机碳的矿化特征及活性有机碳的含量变化. 结果表明,30年生花椒林土壤有机碳累计矿化量在各层土壤中均高于对应的乔木林土壤,而5年、 17年生花椒林地各层土壤则均低于对应的乔木林土壤,3种花椒林土壤有机碳累计矿化量分配比在各层均高于对应的乔木林土壤. 长期种植花椒增加了土壤有机碳的矿化量,降低了土壤有机碳的稳定性. 乔木林土壤易氧化有机碳和颗粒有机碳在各层均显著高于对应的3种花椒林土壤(P< 0.05). 随花椒种植年限增加,土壤易氧化有机碳和颗粒有机碳含量在0~15 cm和15~30 cm土层先增加后减少,在30~50 cm土层则为先减少后增加. 短期花椒种植有利于土壤活性有机碳的增加,长期则降低了0~15 cm和15~30 cm层土壤活性有机碳含量,花椒种植有利于深层(30~50 cm)土壤活性有机碳的积累.
英文摘要	Taking 5-year-old Chinese prickly ash orchard(PO-5), 17-year-old Chinese prickly ash orchard(PO-17),30-year-old Chinese prickly ash orchard(PO-30) and the forest land(FL,about 60 years) in typical demonstration area of desertification control test in southwestern Guizhou as our research objects, the aim of this study using a batch incubation experiment was to research the mineralization characteristics of soil organic carbon and changes of the labile soil organic carbon contents at different depths (0-15 cm, 15-30 cm, and 30-50 cm). The results showed that: the cumulative mineralization amounts of soil organic carbon were in the order of 30-year-old Chinese prickly ash orchard, the forest land, 5-year-old Chinese prickly ash orchard and 17-year-old Chinese prickly ash orchard at corresponding depth. Distribution ratios of CO_2-C cumulative mineralization amount to SOC contents were higher in Chinese prickly ash orchards than in forest land at each depth. Cultivation of Chinese prickly ash in long-term enhanced the mineralization of soil organic carbon, and decreased the stability of soil organic carbon. Readily oxidized carbon and particulate organic carbon in forest land soils were significantly more than those in Chinese prickly ash orchards at each depth(P<0.05). With the increasing times of cultivation of Chinese prickly ash, the contents of readily oxidized carbon and particulate organic carbon first increased and then declined at 0-15 cm and 15-30 cm depth, respectively, but an opposite trend was found at 30-50 cm depth. At 0-15 cm and 15-30 cm, cultivation of Chinese prickly ash could be good for improving the contents of labile soil organic carbon in short term, but it was not conducive in long term. In this study, we found that cultivation of Chinese prickly ash was beneficial for the accumulation of labile organic carbon at the 30-50 cm depth.
中文关键词	喀斯特石漠化地区 ; 花椒林 ; 土壤有机碳 ; 矿化 ; 活性有机碳
英文关键词	Karst rocky desertification region Chinese prickly ash orchard soil organic carbon mineralization labile organic carbon
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:5372874
来源机构	贵州师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232906
作者单位	1.贵州师范大学地理与环境科学学院, 贵州省山地环境重点实验室, 贵阳, 贵州 550001, 中国; 2.贵州师范大学, 贵州省山地环境重点实验室, 贵阳, 贵州 550001, 中国; 3.贵州师范大学地理与环境科学学院, 贵阳, 贵州 550001, 中国
推荐引用方式 GB/T 7714	张文娟,廖洪凯,龙健,等. 种植花椒对喀斯特石漠化地区土壤有机碳矿化及活性有机碳的影响[J]. 贵州师范大学,2015,36(3):1053-1059.
APA	张文娟,廖洪凯,龙健,李娟,&刘灵飞.(2015).种植花椒对喀斯特石漠化地区土壤有机碳矿化及活性有机碳的影响.环境科学,36(3),1053-1059.
MLA	张文娟,et al."种植花椒对喀斯特石漠化地区土壤有机碳矿化及活性有机碳的影响".环境科学 36.3(2015):1053-1059.