干旱区生态环境知识资源中心(Arid): 石漠化区植被恢复过程凋落叶分解特征及其对土壤有机碳/氮的影响以重庆中梁山为例

Arid

	石漠化区植被恢复过程凋落叶分解特征及其对土壤有机碳/氮的影响以重庆中梁山为例
其他题名	Leaf litter decomposition characters and impact on soil organic carbon/nitrogen in different vegetation restorations of karst rocky desertification: An example of the Zhongliang mountain in Chongqing
	胡宁 1; 马志敏 2; 蓝家程 3; 伍宇春 4; 傅瓦利 4; 袁红 5; 娄露玲 6
来源期刊	中国岩溶
ISSN	1001-4810
出版年	2016
卷号	35 期号:5 页码:539-549
中文摘要	运用凋落物分解袋及样品室内分析的方法,研究了石漠化脆弱生态区植被恢复不同阶段主要建群种凋落叶分解及有机碳、氮释放动态及其与土壤团聚体有机碳、氮之间的关系。结果表明:(1)各植被恢复阶段凋落叶分解系数介于0.73~1.33之间,不同阶段之间表现为,草地<灌丛<乔木林<灌乔林,人工樟树林介于乔木林与灌乔林之间。(2)各植被恢复阶段凋落叶有机碳、氮净释放率介于58.5%~72.9%与21.2%~ 63.9%之间,有机碳在分解期间表现为净释放,有机碳、氮释放率随植被恢复年限的延长呈增加的趋势。(3)凋落叶分解与养分释放对土壤有机碳、氮含量的提高有促进作用。其中,凋落叶分解系数与0.25~1mm、< 0.25mm粒径团聚体轻组有机碳、氮之间关系密切。在植被恢复过程中,凋落叶分解速率及有机碳、氮释放率随恢复年限延长而呈增加趋势,凋落叶分解对土壤有机碳、氮有重要影响,轻组有机碳、氮优先向小粒径团聚体输入,小粒径团聚体在土壤有机碳、氮积累中有重要作用。凋落叶分解一方面能为植物生长提供养分,同时也促进土壤有机质的形成与积累,植被恢复过程中应加强水土保持、提高土壤层的养分保蓄与抗水土流失能力。
英文摘要	Restoring vegetation and improving soil quality is key to the control of rocky desertification.Soil organic carbon/nitrogen is not only the key component of soil quality,but also the basic role in the soil fertility system.In this study the Shiqing village in Nanchuan,a typical man-made vegetation restoration base, and the Zhongliang mountain in Beibei,a typical natural vegetation restoration pattern,were chosen as the study sites.In these areas,some typical sample plots were selected based on the field investigation and leaf litter of dominant plant species was collected.Then the treated leaf litter was filled into litter bags and was buried in the respective sample plots.At the same time,some 0-10cm layered soil samples were collected in the vicinity of buried litter bag site in every experimental plot.In order to probe into leaf litter decomposition characters in the process of vegetation recovery,and the impact of leaf litter decay on soil organic carbon/nitrogen accumulation and nitrogen supply in karst rocky desertification areas,leaf litter decomposition rate of dominant plant species and organic carbon/nitrogen release rate were examined using the litter bag burying method,and the correlation between leaf litter decomposition and soil organic/nitrogen was analyzed in this study.On the basis of this analysis,this work discussed the key aggregate-size in the process of organic/nitrogen accumulation.The main results are as follows,the coefficient k of leaf litter decomposition varies from 0.73to 1.33.On different sampling lands,the kvalue shows a tendency of grass land
中文关键词	凋落叶分解 ; 团聚体有机碳/氮 ; 土壤有机碳/氮积累 ; 植被恢复过程 ; 石漠化
英文关键词	leaf litter decomposition soil aggregates organic carbon/nitrogen soil organic carbon/nitrogen accumulation vegetation restoration process karst rocky desertification
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:5892435
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/2XILL650/235535
作者单位	1.河南省新乡市地震局, 三峡库区生态环境教育部重点实验室, 新乡, 河南 453000, 中国; 2.河南省新乡市第一中学, 新乡, 河南 453000, 中国; 3.贵州师范大学中国南方喀斯特研究院, 贵阳, 贵州 550001, 中国; 4.西南大学地理科学学院, 三峡库区生态环境教育部重点实验室, 重庆 400715, 中国; 5.湖南农业大学资源环境学院, 长沙, 湖南 410128, 中国; 6.河南省新乡市地震局, 新乡, 河南 453000, 中国
推荐引用方式 GB/T 7714	胡宁,马志敏,蓝家程,等. 石漠化区植被恢复过程凋落叶分解特征及其对土壤有机碳/氮的影响以重庆中梁山为例[J]. 贵州师范大学,2016,35(5):539-549.
APA	胡宁.,马志敏.,蓝家程.,伍宇春.,傅瓦利.,...&娄露玲.(2016).石漠化区植被恢复过程凋落叶分解特征及其对土壤有机碳/氮的影响以重庆中梁山为例.中国岩溶,35(5),539-549.
MLA	胡宁,et al."石漠化区植被恢复过程凋落叶分解特征及其对土壤有机碳/氮的影响以重庆中梁山为例".中国岩溶 35.5(2016):539-549.