干旱区生态环境知识资源中心(Arid): 油蒿演替系列土壤基质的演变

Arid

	油蒿演替系列土壤基质的演变
其他题名	Changes of Soil Substrates in Artemisia Ordosica Succession Series
	王海涛 1; 薛苹苹 1; 何兴东 1; 高玉葆 1; 李永红 2; 段续川 3
ISSN	0465-7942
出版年	2007
卷号	40 期号:1 页码:87-91
中文摘要	土壤基质变化影响干旱、半干旱区植物群落的演替.对干旱区油蒿群落演替系列土壤基质变化的分析表明,随油蒿群落的演替进展,土壤各层中CaCO3含量显著增加,有机质和土壤全N含量也明显增加,相应各层细菌数量显著增加,油蒿半固定沙地和固定沙地土壤脱氢酶活性显著增强.这些变化促进了油蒿枯枝落叶的分解,加速了Ca^2＋的释放,促进了土壤呼吸,促进了土壤中CO2的释放,进而促进了油蒿群落土壤中CaCO3的淋溶和淀积.进一步分析得知,油蒿须根是土壤CaCO3形成的重要来源.钙积层的形成使得较油蒿根系更浅的冷蒿植物得以侵入、定居,而油蒿则逐渐退出.因此,土壤基质变化尤其是土壤钙积层的形成是油蒿群落演替的根本原因.
英文摘要	Soil substrates changing affects succession of plant community in arid and semiarid areas. This paper studied the changes of soil matrix of Artemisia ordosica succession series in semi-arid area. The results indicated that, with the advancing of A. ordosica succession, there existed a significant increase in content of calcium carbonate and number of bacteria and a remarkable increase in content of organic matter and total nitrogen in each soil layer. Meanwhile, the activity of soil dehydrogenase increased significantly in semi-fixed and fixed sandy land of A. ordosica community. Those changes accelerated decomposition of A. ordosica litter and soil transpiration, promoted the release of calcium ion and carbon dioxide, thus enhanced the eluviation and precipitation of calcium carbonate in soil of A. ordosica community. The further analysis suggested that fibrous roots of A. ordosica are much more important during the formation of calcium carbonate. The presence of calcic horizon availed the invasion and residence of A. frigida which is a relatively shallow-rooted plant. In conclusion, the ultimate cause for the succession of A. ordosica community mainly contributes to the changes of soil substrate, especially the formation of calcium carbonate.
中文关键词	油蒿 ; 群落演替 ; 土壤
英文关键词	Artemisia ordosica community succession sand soil
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:2882848
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/221216
作者单位	1.南开大学生命科学学院, 天津 300071, 中国; 2.南开大学元素有机化学研究所, 天津 300071, 中国; 3.天津师范大学化学与生命科学学院, 天津 300074, 中国
推荐引用方式 GB/T 7714	王海涛,薛苹苹,何兴东,等. 油蒿演替系列土壤基质的演变[J],2007,40(1):87-91.
APA	王海涛,薛苹苹,何兴东,高玉葆,李永红,&段续川.(2007).油蒿演替系列土壤基质的演变.,40(1),87-91.
MLA	王海涛,et al."油蒿演替系列土壤基质的演变".40.1(2007):87-91.