[1]谷永建,李玉梅,陶千冶,等.网袋埋藏和自然环境下测定森林凋落物早期分解过程的比较[J].浙江林业科技,2020,40(06):1-8.[doi:10.3969/j.issn.1001-3776.2020.06.001]
 GU Yong-jian,LI Yu-mei,TAO Qian-ye,et al.Comparison on Early Decomposition Process of Forest Litter from Litter Bag and NaturalEnvironment[J].Journal of Zhejiang Forestry Science and Technology,2020,40(06):1-8.[doi:10.3969/j.issn.1001-3776.2020.06.001]
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网袋埋藏和自然环境下测定森林凋落物早期分解过程的比较()
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《浙江林业科技》[ISSN:1001-3776/CN:33-1112/S]

卷:
40
期数:
2020年06期
页码:
1-8
栏目:
出版日期:
2020-12-25

文章信息/Info

Title:
Comparison on Early Decomposition Process of Forest Litter from Litter Bag and NaturalEnvironment
文章编号:
1001-3776(2020)06-0001-08
作者:
谷永建123李玉梅123陶千冶123旺 罗2
1. 中国科学院大学地球与行星科学学院,北京 100049;2. 中国科学院地质与地球物理研究所,北京 100029;3. 中国科学院大学测试中心分子化石实验室,北京 100049
Author(s):
GU Yong-jian123LI Yu-mei123TAO Qian-ye123WANG Luo2
1. College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; 2. Institute of Geology andGeophysics, Chinese Academy of Sciences, Beijing 100029, China; 3. Laboratory of Molecular Fossils of Testing Centre, University ofChineseAcademy of Sciences, Beijing 100049, China
关键词:
凋落物自然环境网袋落叶阔叶林分解作用
Keywords:
litter natural environment litterbag deciduous broad-leaved forest decomposition
分类号:
S718.5
DOI:
10.3969/j.issn.1001-3776.2020.06.001
文献标志码:
A
摘要:
为比较网袋埋藏和自然环境中凋落物分解速率的差异,探讨网袋在凋落物早期分解过程中对分解速率的影响,选取位于北京市东灵山的暖温带落叶阔叶林为固定样地,于2007 年11 月至2008 年11 月定期收集网袋和自然分解早期凋落物,并收集分解后期近10 年的样品作为对比,测定其红度(a*)、黄度(b*)和亮度(L*)。结果表明,网袋中的凋落物和自然环境中的凋落物的a*,b*,L*均随分解时间的推移而逐渐降低,颜色变化主要发生在分解的第1 年,分解后期颜色逐渐趋于稳定;分解早期,对a*,b*,L*而言,三者间呈极显著的正相关,a*,b*,L*与分解时间之间均呈显著负相关;网袋中凋落物的颜色值波动较大,分布离散,规律性较差;分解开始,网袋中的凋落物与自然环境中的凋落物的颜色接近,随着时间的推移,差别逐渐增大,凋落物的颜色变化是色素等有机质分解的外在表现,时间较长时,网袋微环境会抑制凋落物分解,使其分解速率低于自然样品。因此,利用网袋法研究凋落物分解过程和分解速率,应适当考虑网袋的存在对分解的影响以使结果更加精准。
Abstract:
Permanent sample plots were established in 2007 in warm temperate deciduous broad-leaved forest in Donglingshan Mountain, Beijing forstudying early decomposition of litter. From November 2007 to November 2008, samples from litter bag and natural environment were collectedregularly and their color values (a*, b*, L*) were measured. Samples from 2009 to 2018 were collected from the same sample plots for comparison.The results indicated a*, b*, L* gradually decreased with the increase of time. Color change of litter mainly occurred in the first year ofdecomposition, and then gradually stable in the later stage. At the early stage of decomposition, there were significantly positive correlations amongthree indexes, and significantly one among decomposition years. At early stage, color was similar of samples from litterbag and natural environment,but later there were difference between them at later stage.

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备注/Memo

备注/Memo:
收稿日期:2020-04-18;修回日期:2020-09-03
基金项目:国家自然科学基金项目(42077412,41430531,41272207),中科院先导专项子课题(XDA20040102, XDA05130402)
作者简介:谷永建,硕士研究生,从事第四纪环境变化工作;E-mail:guyongjian14@mails.ucas.ac.cn。通信作者:李玉梅,副教授,从事地球化学、地球生物学和第四纪地质学方面的研究;E-mail:liym@ucas.ac.cn。
更新日期/Last Update: 2020-12-20