海南岛黎母山国家自然保护区热带云雾林土壤酶活性的根际效应

涂志华; 周凌峰; 黄艳萍; 陈夙怡; 陈金辉; 李胜男

doi:10.13961/j.cnki.stbctb.2021.03.001

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海南岛黎母山国家自然保护区热带云雾林土壤酶活性的根际效应

试验研究

- 海南岛黎母山国家自然保护区热带云雾林土壤酶活性的根际效应
- Rhizosphere Effects of Soil Enzyme Activities in Tropical Cloud Forests in Limushan National Nature Reserve on Hainan Island
- 水土保持通报 2021年41卷第3期页码：1-7
- 作者机构：
  
  1. 海南大学林学院热带特色林木花卉遗传与种质创新教育部重点实验室,海南,海口,570228
  2. 海南省热带珍稀名贵树种工程研究中心,海南,海口,570228
  3. 海南五指山森林生态系统国家定位观测研究站,海南,海口,570228
  4. 海南省建设项目规划设计研究院有限公司,海南,海口,570203
- 作者简介：
- 基金信息：
  
  海南省自然科学基金项目“热带云雾林土壤微生物与土壤酶根际激发效应机理及其对环境变化的响应机制”（319QN159）;海南大学引进人才科研启动基金项目“热带云雾林土壤微生物生物量与土壤酶生态化学计量特征及其对环境变化的响应机制”〔KYQD（ZR）1950〕
- DOI：10.13961/j.cnki.stbctb.2021.03.001
  中图分类号： S157.5;S157.2
- 纸质出版：2021
- 稿件说明：
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涂志华, 周凌峰, 黄艳萍, 等. 海南岛黎母山国家自然保护区热带云雾林土壤酶活性的根际效应[J]. 水土保持通报, 2021,41(3):1-7.

Tu Zhihua, Zhou Lingfeng, Huang Yanping, et al. Rhizosphere Effects of Soil Enzyme Activities in Tropical Cloud Forests in Limushan National Nature Reserve on Hainan Island[J]. Bulletin of Soiland Water Conservation, 2021, 41(3): 1-7.
涂志华, 周凌峰, 黄艳萍, 等. 海南岛黎母山国家自然保护区热带云雾林土壤酶活性的根际效应[J]. 水土保持通报, 2021,41(3):1-7. DOI： 10.13961/j.cnki.stbctb.2021.03.001.

Tu Zhihua, Zhou Lingfeng, Huang Yanping, et al. Rhizosphere Effects of Soil Enzyme Activities in Tropical Cloud Forests in Limushan National Nature Reserve on Hainan Island[J]. Bulletin of Soiland Water Conservation, 2021, 41(3): 1-7. DOI： 10.13961/j.cnki.stbctb.2021.03.001.

摘要

[目的] 探讨热带云雾林土壤酶活性的季节动态规律及根际效应，为从土壤酶学角度出发研究热带云雾林水土保持生态功能提升提供科学依据。[方法] 采用抖落法采集3种优势树种岭南青冈、罗浮锥、细枝柃根际和非根际土壤样品，对土壤酶活性季节动态变化进行研究，并分析不同树种根际土壤酶的根际效应及其与土壤养分的关系。[结果] ①热带云雾林不同树种根际与非根际土壤酶活性季节动态变化明显，呈单峰型变化趋势，峰值出现在雨季8月；岭南青冈、罗浮锥土壤酶活性差异不显著，但显著大于细枝柃。②根际土壤酶活性均高于非根际土壤，表现为正根际效应。土壤酶根际效应表现为：酸性磷酸酶 > 脲酶 > 过氧化氢酶 > 蔗糖酶；不同树种酸性磷酸酶、脲酶、蔗糖酶根际效应差异不显著，而过氧化氢酶根际效应表现为岭南青冈、罗浮锥显著大于细枝柃。③土壤酶活性与土壤N，P，K养分含量呈显著正相关，与土壤含水量、pH值相关性不显著。[结论] 热带云雾林主要优势树种土壤酶活性呈现明显的季节动态变化，根际效应显著，N，P，K养分限制可能是土壤酶活性及其季节变化的主导控制因子。

Abstract

[Objective] The seasonal dynamics of soil enzyme activities on the rhizosphere of tropical cloud forests in Limushan National Nature Reserve were quantified in order to provide a scientific basis for improving the ecological functions of soil and water conservation in tropical cloud forests from the perspective of soil enzymology. [Methods] The activity of invertase

urease

catalase

and acid phosphatase in rhizosphere and non-rhizosphere soils was measured. Samples were collected using the shaking off method in the dominant tree species (Cyclobalanopsis championii

Castanopsis fabri

Eurya loquaiana) in tropical cloud forests. Relationships between the seasonal dynamics of soil enzyme activities and soil nutrients were also analyzed. [Results] ① The seasonal dynamics of soil enzyme activities in rhizosphere and non-rhizosphere soils of different tree species varied significantly with season

showed a single peak trend

reached a maximum in August of rainy season. The levels of soil enzyme activities in rhizosphere and non-rhizosphere soils of C. championii

and C. fabri were not significantly different

but were significantly higher than for E. loquaiana. ② The level of enzyme activities in rhizosphere soil were significantly higher than in non-rhizosphere soil for different tree species in tropical cloud forests. These results indicated a positive rhizosphere effect that followed the order of acid phosphatase > urease > catalase > invertase. The rhizosphere effects of acid phosphatase

urease

and invertase were not significantly different among different dominant tree species

while the rhizosphere effects of catalase in C. championii

and C. fabri were higher than in E. loquaiana. ③ The level of soil enzyme activities had a significant positive correlation with soil nitrogen(N)

phosphorus (P)

potassium (K)

and had no significant correlation with soil water content and pH value. [Conclusion] Soil enzyme activities in rhizosphere soil and non-rhizosphere soil in different trees in tropical cloud forests exhibited seasonal dynamics

and the rhizosphere effect was significant. Rhizosphere enrichment occurred for dominant tree species. N

and K nutrient limitations may be the dominant controlling factors affecting soil enzyme activity and its seasonal variation.

关键词

Keywords

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