干旱区生态环境知识资源中心(Arid): 内蒙半干旱低山区不同纯林土壤腐殖质分异特征及其与其他生物化学性质的关系

Arid

	内蒙半干旱低山区不同纯林土壤腐殖质分异特征及其与其他生物化学性质的关系
其他题名	Soil humus differentiation and correlation with other soil biochemical properties in pure forests in semi-arid low-hilly area of Inner Mongolia,China
	张晓曦 1; 刘增文 2; 邴塬皓 3; 朱博超 4; 黄良嘉 4
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2014
卷号	25 期号:10 页码:2819-2825
中文摘要	纯林土壤腐殖质含量及其构成是否会因枯落叶组成的单一性和单优群落环境的特殊性而发生分异变化是关系到森林可持续经营的关键问题.本文以内蒙半干旱低山区的6种典型纯林为研究对象,研究了不同树种纯林土壤腐殖质分异特征及其与其他生物化学性质的关系.结果表明:云杉和白桦林地土壤的腐殖质含量、缩合程度和稳定性均较高,其次为小叶杨和落叶松林地,再次为白榆林地,而油松林地土壤的腐殖质含量和缩合程度均最低、稳定性最差.土壤微生物生物量和磷酸酶活性与腐殖质各组分的积累及其稳定性存在相互促进作用;过氧化氢酶和脱氢酶活性则与土壤腐殖质存在相互抑制作用,且脱氢酶活性的提高可能破坏腐殖质的稳定性.速效 N 含量与腐殖质积累及其稳定性呈正相关,而全量 Cu、Fe、Zn 含量与腐殖质呈负相关,全 Cu、Fe 的增加可能会破坏腐殖质的稳定性.纯林环境及其枯落叶性质的特殊性是造成腐殖质分异的重要原因,混交改造或增加林下植被是改善土壤腐殖质构成的根本措施.
英文摘要	Whether the content and composition of soil humus in pure forest change due to its simple component of litter and specificity of single-species dominant community is a key problem for forest sustainable management.In this study,soils from 6 kind of pure forests in semi-arid low-hilly area of Inner Mongolia were collected and their humus and other biochemical properties were measured to investigate the differentiation of soil humus and the impact factors.The results showed that the soil of Picea asperata and Betula platyphylla pure forests had the highest contents of humus and better condensation degrees and stabilities,followed by that of Populus simonii,Larix principisrupprechtii and Ulmus pumila pure forests,while the soil of Pinus tabuliformis pure forest had the lowest content of humus,condensation degree and stability.There were significant positive correlations between soil microorganism biomass,activity of phosphatase and the content and stability of soil humus.In contrast,the soil peroxidate,dehydrogenase activity and soil humus content showed significant negative correlations with each other.Furthermore,the enhancement of dehydrogenase activity might decrease the stability of humus.There were significant positive correlations between available N and the content and stability of soil humus,but total Cu,Zn and Fe had negative correlations with them,and total Cu and Fe might reduce the stability of humus as well.The particularity of pure forest environment and litter properties might be the key inducement to soil humus differentiation,thus reforming the pure forest through mixing with other tree species or planting understory vegetation would be the fundamental way to improve the soil humus composition and stability.
中文关键词	纯林土壤 ; 腐殖质 ; 生物化学性质 ; 枯落叶
英文关键词	oil of pure forest humus biochemical property litter
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:5266330
来源机构	西北农林科技大学 ; 中国科学院水利部水土保持研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231993
作者单位	1.西北农林科技大学水土保持研究所, 杨凌, 陕西 712100, 中国; 2.西北农林科技大学资源环境学院, 农业部西北植物营养与农业环境重点实验室, 杨凌, 陕西 712100, 中国; 3.西北农林科技大学林学院, 杨凌, 陕西 712100, 中国; 4.西北农林科技大学资源环境学院, 杨凌, 陕西 712100, 中国
推荐引用方式 GB/T 7714	张晓曦,刘增文,邴塬皓,等. 内蒙半干旱低山区不同纯林土壤腐殖质分异特征及其与其他生物化学性质的关系[J]. 西北农林科技大学, 中国科学院水利部水土保持研究所,2014,25(10):2819-2825.
APA	张晓曦,刘增文,邴塬皓,朱博超,&黄良嘉.(2014).内蒙半干旱低山区不同纯林土壤腐殖质分异特征及其与其他生物化学性质的关系.应用生态学报,25(10),2819-2825.
MLA	张晓曦,et al."内蒙半干旱低山区不同纯林土壤腐殖质分异特征及其与其他生物化学性质的关系".应用生态学报 25.10(2014):2819-2825.