| 白洋淀芦苇台地土壤理化因子及其酶活性特征 |
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| 引用本文： | 刘莎,刘存歧,李博,王军霞,张亚娟,李昂.白洋淀芦苇台地土壤理化因子及其酶活性特征[J].湿地科学,2012,10(1):74-80. |
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| 作者姓名： | 刘莎 刘存歧 李博 王军霞 张亚娟 李昂 |
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| 作者单位： | 1. 河北大学生命科学学院,河北保定,071002
2. 中国科学院生态环境研究中心,城市与区域生态国家重点实验室,北京100085 |
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| 基金项目： | 水体污染控制与治理科技重大水专项项目(2009ZX07209-008-05);河北省科学技术研究与发展指导计划项目(06276905)资助 |
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| 摘 要： | 2009年4月22日、6月23日、8月31日和10月31日,在白洋淀鸳鸯岛、北田庄和圈头村芦苇(Phragmites australis)台地3个垂直剖面(0～10cm、10～30cm和30～60cm)上采集了土壤样品,分析了不同季节的土壤理化因子和4种土壤酶活性的时空变化及其相互关系。结果表明,白洋淀芦苇台地土壤含水量随着土壤深度的增加而增加;土壤有机质含量随土壤深度的增加而减少,0～10cm表层土的有机质含量都在70g/kg以上;土壤的全氮和全磷含量随土壤深度的增加而减少,各采样地0～10cm表层土壤的全氮含量为2.04～3.41g/kg,全磷含量为0.71～1.14g/kg。3块采样地0～60cm土壤的蔗糖酶活性、碱性磷酸酶活性、脱氢酶活性和荧光素二乙酸酯(FDA)水解酶活性分别为0.53～28.56mg/g、0.44～2.36mg/g、1.62～12.18mg/g和8.07～172.65μg/g,表层土壤具有较大酶活性。芦苇台地4种土壤酶活性与土壤含水量呈显著负相关(p<0.01),与土壤有机质含量、全氮含量、全磷含量呈显著正相关(p<0.01)。
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| 关 键 词： | 白洋淀 芦苇台地 土壤酶活性 理化因子 特征 |
Characteristics of Physic-chemical Factors and Enzyme Activities of Soil in Reed Terra of Baiyang Lake |
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| LIU Sha
,
LIU Cun-Qi
,
LI Bo
,
WANG Jun-Xia
,
ZHANG Ya-Juan
,
LI Ang.Characteristics of Physic-chemical Factors and Enzyme Activities of Soil in Reed Terra of Baiyang Lake[J].Wetland Science,2012,10(1):74-80. |
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| Authors: | LIU Sha LIU Cun-Qi LI Bo WANG Jun-Xia ZHANG Ya-Juan LI Ang |
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| Institution: | 1 (1.College of Life Sciences,Hebei University,Baoding 071002,Hebei,P.R.China; 2.State Key Laboratory of Urban and Regional Ecology,Research Center for Eco-environmental Sciences, Chinese Academy of Sciences,Beijing 100085,P.R.China) |
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| Abstract: | As the largest freshwater lake in North China,Baiyang Lake plays a significant role in protecting the environmental security of the whole basin and major cities.Terra around the lake is mainly made up of bog soil with nutrition,and is a proper habitat for reed(Phragmites australis),which distributes widely and controls main ecological processes in Baiyang Lake.At present soil physic-chemical and biological characteristics in its reed terra has not been known completely.In this paper,three typical sites(Yuanyangdao,Beitian- zhuang and Quantoucun)were selected in reed terra of Baiyang Lake on April 22,June 23,August 31 and October 31,2009.In each sampling site,3 quadrats were set randomly,and soil samples were collected from three different sections(0-10 cm,10-30 cm and 30-60 cm).The soil physic-chemical factors(water content, organic matter content,total nitrogen and total phosphorus contents)and activities of four kinds of soil enzymes were measured in situ and in lab and their correlations were analyzed in order to understand soil characteristics in reed terra of Baiyang Lake.The results showed that soil water content increased with depth and reached maximum in August.On the contrary,soil organic matter content decreased and all of that in topsoil (0-10cm)was great than 70 g/kg.Total nitrogen and total phosphorus contents decreased with soil depth and those in topsoil were between 2.04-3.41 g/kg and 0.71-1.14 g/kg,respectively.Activities of four soil enzymes decreased significantly with depth.In three soil sections,invertase activity,alkaline phosphatase activity,dehydrogenase activity and fluorescein diacetate(FDA)hydrolase activity were 0.53-28.56 mg/g,0.44-2.36 mg/g, 1.62-12.18 mg/g and 8.07-172.65μg/g,respectively,and those in topsoil were greater than in deeper soils. The activities of four soil enzymes were significantly negatively correlated with soil water content(p<0.01), significantly positively with contents of total nitrogen,total phosphorus and organic matter(p<0.01).The results above indicated that soil water content was a key factor restraining the activities of four kinds of soil enzymes.Moreover,carbon,nitrogen,phosphorus of soil had a great influence on activities of four kinds of soil enzymes.Soil enzyme activity could characterize soil fertility and quality according to correlation with the contents of organic matter,total nitrogen and total phosphorus.Therefore,soil enzyme activity could be an important indicator in assessing soil fertility in reed terra of Baiyang Lake. |
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| Keywords: | Baiyang Lake reed terra soil enzyme activity physic-chemical factor characteristic |
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