亚热带米槠天然林不同深度土壤胞外酶活性对隔离降雨的响应

曹平丽; 孙思怡; 卢胜旭; 张锦新; 刘小飞; 郭剑芬

doi:10.13870/j.cnki.stbcxb.2022.01.027

您当前的位置：

首页 >

文章列表页 >

亚热带米槠天然林不同深度土壤胞外酶活性对隔离降雨的响应

更新时间：2025-03-12

- 亚热带米槠天然林不同深度土壤胞外酶活性对隔离降雨的响应
- Response of Soil Extracellular Enzymes Activities to Throughfall Exclusion at Different Depths in a Subtropical Natural
- 水土保持学报 2022年36卷第1期页码：205-211
- 作者机构：
  
  1. 福建师范大学地理研究所,福州,350007
  2. 福建师范大学湿润亚热带生态地理过程教育部重点实验室,福州,350007
  3. 闽江学院海洋学院,福州,350108
- 作者简介：
  
  [ "曹平丽(1997-),女,硕士研究生,主要从事亚热带森林碳氮循环研究。E-mail:cpl1552164082@163.com" ]
- 基金信息：
  
  福建省科技厅公益类重点项目(2019R1002-4);福建省高等学校新世纪优秀人才支持计划项目(J1-1253);国家自然科学基金项目(41977090)
- DOI：10.13870/j.cnki.stbcxb.2022.01.027
  中图分类号： S718.5
- 纸质出版：2022
- 稿件说明：
移动端阅览
曹平丽, 孙思怡, 卢胜旭, 等. 亚热带米槠天然林不同深度土壤胞外酶活性对隔离降雨的响应[J]. 水土保持学报, 2022,36(1):205-211.

CAO Pingli, SUN Siyi, LU Shengxu, et al. Response of Soil Extracellular Enzymes Activities to Throughfall Exclusion at Different Depths in a Subtropical Natural[J]. 2022, 36(1): 205-211.
曹平丽, 孙思怡, 卢胜旭, 等. 亚热带米槠天然林不同深度土壤胞外酶活性对隔离降雨的响应[J]. 水土保持学报, 2022,36(1):205-211. DOI： 10.13870/j.cnki.stbcxb.2022.01.027.

CAO Pingli, SUN Siyi, LU Shengxu, et al. Response of Soil Extracellular Enzymes Activities to Throughfall Exclusion at Different Depths in a Subtropical Natural[J]. 2022, 36(1): 205-211. DOI： 10.13870/j.cnki.stbcxb.2022.01.027.

摘要

随着全球变暖的加剧

降雨格局也在发生变化

土壤酶是森林生态系统化学过程的重要参与者

能够快速反映土壤环境的变化。因此研究亚热带土壤胞外酶活性对降水变化的响应

可有效评估气候变化对土壤有机质分解、转化的影响。以福建三明格氏栲自然保护区内的米槠天然林为研究对象

设置对照(CT)、隔离30%降雨(TE1)和隔离60%降雨(TE2) 3种处理

于2020年9月对不同土层(0—10

10—20

20—40

40—60 cm)土壤进行取样

研究9年的隔离降雨对不同土层土壤酶活性的影响。结果表明:不同程度隔离降雨后

4个土层的β—葡萄糖苷酶(βG)、β—N—乙酰氨基葡萄糖苷酶(NAG)和酸性磷酸酶(AP)活性均呈下降趋势。与CT相比

TE2处理0—40 cm土壤AP、βG和NAG酶活性均显著降低(P<0.05)

40—60 cm土壤AP酶活性在TE1和TE2处理中降低均较为显著。随着土层加深

3种土壤胞外酶活性均逐渐降低。冗余分析(RDA)表明

在0—10 cm土壤中

土壤含水量(SWC)、总氮(TN)和可溶性有机碳(DOC)是调控土壤胞外酶活性的主要因素

10—20 cm土壤胞外酶活性主要受控于可溶性有机碳(DOC)和铵态氮(NH4+—N)

而可溶性有机氮(DON) 和硝态氮(NO3-—N)是调控20—40 cm土层土壤胞外酶活性的关键因素。在40—60 cm土壤中

碳磷比(C∶P)主要影响着3种土壤胞外酶活性。可见

不同深度土壤胞外酶活性对降水减少的响应及调控因素不同。研究结果有助于进一步了解全球气候变化背景下亚热带森林土壤养分转化与循环机制。

Abstract

With the intensification of global warming

the rainfall pattern is also changing. Soil enzymes are the important participants in the chemical process of forest ecosystem and can quickly reflect the changes of soil environment. Therefore

studying the response of extracellular enzymes activities in subtropical soil to precipitation changes can effectively evaluate the impact of climate change on soil organic matter decomposition and transformation. In this study

the natural Castanopsis carlesii forest in Castanopsis kawakamii Nature Reserve of Sanming

Fujian Province was selected

and three treatments were set up

including control (CT)

30% of throughfall excluded (TE1) and 60% of throughfall excluded (TE2). In September 2020

soil samples of different soil layers (0—10

10—20

20—40

40—60 cm) in each treatment were collected to study the effects of 9-year throughfall exclusion on soil enzymes activities. The results showed that the activities of β-glucosidase (βG)

β-N-acetylglucosaminosidase (NAG) and acid phosphatase (AP) in the four soil layers decreased after throughfall exclusion. Compared with CT

the activities of AP

βG and NAG in 0—40 cm soil under TE2 treatment were significantly decreased (P <0.05)

and the activities of AP in 40—60 cm soil under TE1 and TE2 treatments were also significantly decreased. With increasing soil layers

the activities of three extracellular enzymes decreased. Redundancy analysis (RDA) showed that soil moisture content (SWC)

total nitrogen (TN) and soluble organic carbon (DOC) were the main factors regulating the activities of soil extracellular enzymes in 0—10 cm soil

while DOC and ammonium nitrogen (NH4+—N) in 10—20 cm

and soluble organic nitrogen (DON) and nitrate nitrogen (NO3-—N) in 20—40 cm. In 40—60 cm soil

the C∶P ratio mainly influenced the extracellular enzymes activities. In conclusion

the responses and regulatory factors of soil extracellular enzymes activities to the decrease of precipitation were different at different soil depths. The results of this study are helpful to further understand the mechanism of soil nutrient transformation and cycling in subtropical forests under global climate change.

关键词

Keywords

references

Deng Q, Chen X L, Hui D F, et al. Soil microbial community and its interaction with soil carbon and nitrogen dynamics following afforestation in central China [J].Science of the Total Environment,2016,541:230-237.

王理德,王方琳,郭春秀,等.土壤酶学硏究进展[J].土壤,2016,48(1):12-21.

Babst F, Bouriaud O, Poulter B, et al. Twentieth century redistribution in climatic drivers of global tree growth [J].Science Advances,2019,5(1):e4313．

Christopher B, Vicente R, Barros, et al. Climate change 2014-Impacts, adaptation and vulnerability: Regional aspects [M].England: Cambridge University Press,2014:23-27.

Wang G S, Huang W J, Mayes M A, et al. Soil moisture drives microbial controls on carbon decomposition in two subtropical forests [J].Soil Biology and Biochemistry,2019,130:185-194.

李仪.降水减少和施氮对亚热带山地森林土壤有机碳含量和微生物群落的影响[D].武汉:中国科学院大学,2020.

Weedon J T, Aerts R, Kowalchuk G A, et al. Enzymology under global change: Organic nitrogen turnover in alpine and subarctic soils [J].Biochemical Society Transactions,2011,39(1):309-314.

Gomez E J, Delgado J A, Gonzalez J M. Influence of water availability and temperature on estimates of microbial extracellular enzyme activity [J].Peer J, 2021,9:e10994.

Zuo Y P, Li J P, Zeng H, et al. Vertical pattern and its driving factors in soil extracellular enzyme activity and stoichiometry along mountain grassland belts [J].Biogeochemistry,2018,141(1):23-39.

Hou Y H, Chen Y, Chen X, et al. Changes in soil organic matter stability with depth in two alpine ecosystems on the Tibetan Plateau [J].Geoderma,2019,351:153-162.

Zuo Y P, Zhang H J, Li J P, et al. The effect of soil depth on temperature sensitivity of extracellular enzyme activity decreased with elevation: Evidence from mountain grassland belts [J].Science of the Total Environment, 2021,777: 136-146.

Chen J, Sinsabaugh R L. Linking microbial functional gene abundance and soil extracellular enzyme activity: Implications for soil carbon dynamics [J].Global Change Biology,2021,27(7):1322-1325.

Zhou L H, Liu S S, Shen H H, et al. Soil extracellular enzyme activity and stoichiometry in China’s forests [J].Functional Ecology,2020,34(7):1461-1471.

Qin Q Q, Liu Y H. Changes in microbial communities at different soil depths through the first rainy season following severe wildfire in North China artificial Pinus tabulaeformis forest [J].Journal of Environmental Management,2021,280:111-865.

吴波波,郭剑芬,吴君君,等.采伐剩余物对林地表层土壤生化特性和酶活性的影响[J].生态学报,2014,34(7):1645-1653.

刘小飞,陈仕东,熊德成,等.高频观测的土壤异养呼吸昼夜变化[J].亚热带资源与环境学报,2014,9(1):92-94.

张星星,杨柳明,陈忠,等.中亚热带不同母质和森林类型土壤生态酶化学计量特征[J].生态学报,2018,38(16):5828-5836.

Lützow M, Kögel-Knabner I, Ekschmitt K, et al. Stabilization of organic matter in temperate soils mechanisms and their relevance under different soil conditions: A review [J].European Journal of Soil Science, 2006, 57(4): 426-445.

Saiya-Cork K R, Sinsabaugh R L, Zak D R. The effects of long-term nitrogen deposition on extracellular enzyme activity in an Acer saccharum forest soil [J].Soil Biology and Biochemistry,2002,34(9):1309-1315.

Averill C, Waring B G, Hawkes C V. Historical precipitation predictably alters the shape and magnitude of microbial functional response to soil moisture[J].Global Change Biology,2016,22(5):1957-1964..

Manzoni S, Schimel J P, Porporato A. Responses of soil microbial communities to water stress: Results from a meta-analysi s[J].Ecology,2012,93(4):930-938..

杨新宇,林笠,李颖,等.青藏高原高寒草甸土壤物理性质及碳组分对增温和降水改变的响应[J].北京大学学报(自然科学版),2017,53(4):765-774.

江淼华,倪梦颖,周嘉聪,等.增温和降雨减少对杉木幼林土壤酶活性的影响[J].生态学杂志,2018,37(11):3210-3219.

鲍勇,高颖,曾晓敏,等.中亚热带3种典型森林土壤碳氮含量和酶活性的关系[J].植物生态学报,2018,42(4):508-516.

Cusack D F. Soil nitrogen levels are linked to decomposition enzyme activities along an urban-remote tropical forest gradient [J].Soil Biology and Biochemistry, 2013, 57: 192-203．

Gallo M, Amonette R, Lauber C, et al. Microbial community structure and oxidative enzyme activity in nitrogen-amended north temperate forest soils [J].Microbial Ecology, 2004, 48(2): 218-229.

Conant R T, Ryan M G, Ågren G I, et al. Temperature and soil organic matter decomposition rates-synthesis of current knowledge and a way forward [J].Global Change Biology, 2011, 17(11): 3392-3404.

张磊,贾淑娴,李啸灵,等.凋落物和根系输入对亚热带米槠天然林土壤有机碳组分的影响[J].水土保持学报,2021,35(3):244-251.

孙思怡,卢胜旭,陆宇明,等.杉木林下套种阔叶树对土壤生态酶活性及其化学计量比的影响[J].林业科学研究,2021,34(1):106-113.

郑蔚,周嘉聪,林伟盛,等.土壤增温对亚热带杉木幼树不同深度土壤微生物胞外酶活性的影响[J].应用生态学报,2019,30(3):832-840.

Allison S D, Wallenstein M D, Bradford M A. Soil-carbon response to warming dependent on microbial physiology [J].Nature Geoscience, 2010, 3(5): 336-340.

浏览量

844

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

湘中丘陵区4个树种人工纯林土壤-微生物-胞外酶C∶N∶P化学计量特征

亚热带米槠天然林土壤有机氮组分对模拟氮沉降的响应

三峡库区坡耕地典型香榧套种模式土壤

黄土丘陵区小流域生态恢复对土壤有机碳和全氮的影响