干旱区生态环境知识资源中心(Arid): 地下水埋深对半干旱区典型植物群落土壤酶活性的影响

Arid

	地下水埋深对半干旱区典型植物群落土壤酶活性的影响
其他题名	Effects of groundwater depth on soil enzymatic activities of typical plant communities in semi-arid area
	苏天燕; 刘子涵; 丛安琪; 毛伟; 杨秋
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2021
卷号	41 期号:4 页码:1000-694X
中文摘要	土壤酶活性是反映土壤功能的关键指标,尤其在受到水分限制的半干旱区,土壤水分驱动的土壤酶活性生态功能的变化可以改变土壤养分周转并影响土壤碳质量。地下水埋深对半干旱区典型植物群落土壤酶活性的影响机制尚不明晰。以半干旱区科尔沁沙质草地两种典型植物群落(白草Pennisetum centrasiaticum和差巴嘎蒿Artemisia halodendron)为研究对象,开展地下水埋深模拟试验,地下水埋深分别为0.5、1.0、2.0 m。分析不同土层的土壤理化性质和土壤酶活性,探讨不同地下水位埋深深度下不同植被类型土壤酶活性的变化特征。结果表明:4种土壤水解酶(酸性磷酸酶(AP)、葡萄糖苷酶(betaG)、乙酰氨基葡萄糖苷酶(NAG)和亮氨酸氨基肽酶(LAP))和2种氧化还原酶(过氧化氢酶(CL)和多酚氧化酶(POX))活性均受地下水位埋深和植被类型的影响。随着地下水埋深的增加,白草和差巴嘎蒿群落内土壤酶活性分别呈现不显著性和显著性的变化规律。同时,在各处理中土壤酶活性均随土层深度的增加而减小。地下水埋深对科尔沁沙质草地白草与差巴嘎蒿群落的土壤水解酶和氧化还原酶活性产生不同的影响。未来在半干旱区进行植被恢复时,建议考虑不同植物群落对地下水位变化的适应对策的差异,以更好地恢复半干旱区植物群落的地上地下生态系统功能。
英文摘要	Soil enzymatic activity is a key indicator reflecting soil function,especially in semi-arid areas where soil water is restricted. The changes of soil enzyme activities driven by soil water can change soil nutrient turnover and affect soil carbon quality. However,changes in soil water movement caused by changes in groundwater depth on soil enzymatic activities of typical plant communities in semi-arid areas are still unclear. Therefore,we carried out two typical plant communities(Pennisetum centrasiaticum and Artemisia halodendron)in the semiarid sandy grassland of Horqin and established the underground water level manipulate experiment. The manipulate groundwater depth as 0.5 m,1.0 m,and 2.0 m. We analyze the soil physical and chemical properties and soil enzymatic activity of different soil layers,and explore the change characteristics of soil enzymatic activities in different groundwater depth gradients and the two different vegetation types. The research results showed that: four kinds of soil hydrolase(acid phosphatase,glucosidase,acetylglucosaminidase and L-leucine aminopeptidase)and two kinds of oxidoreductases(catalase and polyphenol oxidase)were affected by the treatment of groundwater depth and vegetation types,with the increase of groundwater depth,soil enzyme activities under the communities of Pennisetum centrasiaticum and Artemisia halodendron showed insignificant and significant differences,respectively. At the same time,the soil enzyme activity decreased with the increase of soil depth in each treatment. With the increase of groundwater depth,soil enzyme activity is mainly affected by soil organic carbon. Our results indicated groundwater depths affect the soil hydrolase and oxidoreductase activities pattern. The ratio of soil hydrolase and oxidoreductase activities have also affected the soil carbon quality,especially in Pennisetum centrasiaticum and Artemisia halodendron communities. It is suggested to consider the differences of adaptation strategies in various plant communities according to the change of groundwater level when vegetation restoration is carried out in future semi-arid regions,so as to better restore the relevant overground and underground ecosystem functions.
中文关键词	半干旱区 ; 地下水埋深 ; 植被类型 ; 土壤酶活性
英文关键词	semi-arid region underground water level vegetation types soil enzymatic activity
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:7021457
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365468
作者单位	苏天燕, 海南大学生态与环境学院, 海口, 海南 570228, 中国.; 刘子涵, 海南大学生态与环境学院, 海口, 海南 570228, 中国.; 毛伟, 海南大学生态与环境学院, 海口, 海南 570228, 中国.; 杨秋, 海南大学生态与环境学院, 海口, 海南 570228, 中国.; 丛安琪, 中国科学院西北生态环境资源研究院, 兰州, 甘肃 730000, 中国.
推荐引用方式 GB/T 7714	苏天燕,刘子涵,丛安琪,等. 地下水埋深对半干旱区典型植物群落土壤酶活性的影响[J],2021,41(4):1000-694X.
APA	苏天燕,刘子涵,丛安琪,毛伟,&杨秋.(2021).地下水埋深对半干旱区典型植物群落土壤酶活性的影响.中国沙漠,41(4),1000-694X.
MLA	苏天燕,et al."地下水埋深对半干旱区典型植物群落土壤酶活性的影响".中国沙漠 41.4(2021):1000-694X.