OU Zhiyang,SHEN Wenhui,PENG Yuhua,et al.Soil Enzyme Activities of Different Plant Communities in Karst Mountains of Pinguo County, Guangxi[J].Research of Soil and Water Conservation,2017,24(03):75-79.
广西平果县岩溶山地不同植物群落的土壤酶活性
- Title:
- Soil Enzyme Activities of Different Plant Communities in Karst Mountains of Pinguo County, Guangxi
- Keywords:
- soil enzyme; karst; plant community; soil nutrient; correlation
- 分类号:
- S718.5;S714.2;S154.2
- 摘要:
- 为探讨平果县岩溶山地典型植物群落的土壤酶活性特征，基于调查取样与试验分析，采用相关分析、多重比较以及主成分分析方法，研究了不同植物群落间土壤酶活性的差异，分析了土壤酶活性与土壤化学性质的关系。结果表明：（1） 土壤过氧化氢酶、脲酶及蔗糖酶活性的群落间差异达显著水平，显示不同植物群落对土壤酶活性产生一定影响；（2） 土壤pH值与过氧化氢酶、脲酶间呈极显著正相关（p < 0.01），与碱性磷酸酶间呈显著负相关（p < 0.05）；（3） 4个酶活性与代表土壤肥力的土壤有机质、全氮、全磷、全钾、碱解氮及速效钾之间具有较强的相关性，但速效磷与4个土壤酶之间的相关性均未达显著水平（p > 0.05）；（4） 过氧化氢酶、脲酶及碱性磷酸酶能敏感反映土壤质量的变化，可作为本区域土壤质量评价的指标。
- Abstract:
- To study soil enzyme activity characteristics of plant communities under different restoration stages in Pinguo karst moutains, Guangxi, differences of soil enzyme activities among plant communities were analyzed and the correlations between soil enzyme activities and soil chemical properties were also explored through correlation analysis, multiple comparisons and principal component analysis based on field survey and experimental analysis. The results showed that: (1) except soil alkaline phosphatase (APE), the activities of soil catalase (CAT), urease (URE), and invertase (INV) were significant different among plant communities, suggesting that community types have influence on the soil enzyme activities; (2) soil pH value was very significantly positively correlated with CAT and URE (p < 0.01), and significantly negatively related to APE(p < 0.05); (3) APE, CAT, URE, and INV were strongly associated with soil organic matter, total nitrogen, total phosphorus, total potassium, available nitrogen, and available potassium, but available phosphorus was not significantly correlated with the four parameters (p > 0.05); (4) CAT, URE, and APE could be used as the sensitive indicators for dynamic changes of the soil qualities in the study area.
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备注/Memo
收稿日期:2016-05-26;改回日期:2016-06-11。
基金项目:广西优良用材林资源培育重点实验室开放课题（14B0101）；广西林业科技项目（桂林科字[2014]02号）
作者简介:欧芷阳(1975-),女,广西富川人,博士,高级工程师,主要从事植物生态学研究。E-mail:ozhiyang@126.com