干旱区生态环境知识资源中心(Arid): 科尔沁沙地沙漠化过程中植被与土壤退化特征的研究

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	科尔沁沙地沙漠化过程中植被与土壤退化特征的研究
其他题名	Charcteristics of the Vegetation and Soil Changes in the Process of Desertification in Horqin Sandy Land
	蒋德明 1; 曹成有 2; 押田敏雄 3; 阿拉木萨 1; 李明 1
ISSN	1003-7578
出版年	2008
卷号	22 期号:10 页码:156-161
中文摘要	选择科尔沁沙地沙漠化严重地区相邻地段的固定沙丘、半固定沙丘、半流动沙丘和流动沙丘为对象,对土地沙漠化过程中植物种类消长、物种多样性、生活型结构及土壤理化性质和生物活性的变化特征进行了分析。结果表明:沙漠化过程是一个物种多样性衰减的过程,沙漠化导致大多数原生性物种消失。从生活型来看,地面芽植物受沙漠化影响最大。沙漠化过程中土壤养分严重丧失,土壤微生物量C、N、P,以及土壤脲酶、蛋白酶、蔗糖酶、磷酸单酯酶、脱氢酶和硝酸还原酶的活性均随沙漠化程度的加剧而大幅度下降。土壤生物活性对土壤沙漠化比较敏感,在固定沙丘到半固定沙丘的转化过程中土壤生物活性和物种多样性下降最快。
英文摘要	The objective of this study was to determine the characteristics of changes of species composition,species diversity,spectra of plant life-form,physical-chemical and biological properties of soil in the process of desertification of Horqin Sandy Land by taking adjacent fixed sand dune,semi-fixed sand dune,semi-moving sand dune and moving sand dune as treatments.The results showed that desertification was a process of biodiversity loss,and most original species were wiped out in the process.Change in life-form composition indicated that hemicryptophytes were severe affected by desertification.With the heavy losses of soil nutrient contents,the activities of urease,protease,saccharase,phosphataese,dehydrogenase and nitrate reductase decreased significantly in the process of desertification.Soil biological activity is very sensitive to desertification and the highest speeds of the decrease of soil biological properties and species diversity were in the phrase from fixed sand dune to semi-fixed sand dune.
中文关键词	科尔沁沙地 ; 沙漠化 ; 植被退化 ; 土壤理化性质 ; 土壤酶
英文关键词	Horqin Sandy Land desertification vegetation degradation phyasical and chemical properties of soil soil enzyme
语种	中文
国家	中国
收录类别	CSCD
WOS类目	BIODIVERSITY CONSERVATION
WOS研究方向	Biodiversity & Conservation
CSCD记录号	CSCD:3461669
来源机构	中国科学院沈阳应用生态研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/222437
作者单位	1.中国科学院沈阳应用生态研究所, 沈阳, 辽宁 110016, 中国; 2.东北大学理学院, 沈阳, 辽宁 110004, 中国; 3.麻布大学, 日本
推荐引用方式 GB/T 7714	蒋德明,曹成有,押田敏雄,等. 科尔沁沙地沙漠化过程中植被与土壤退化特征的研究[J]. 中国科学院沈阳应用生态研究所,2008,22(10):156-161.
APA	蒋德明,曹成有,押田敏雄,阿拉木萨,&李明.(2008).科尔沁沙地沙漠化过程中植被与土壤退化特征的研究.,22(10),156-161.
MLA	蒋德明,et al."科尔沁沙地沙漠化过程中植被与土壤退化特征的研究".22.10(2008):156-161.