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| UV-B辐射对杉木凋落叶分解的影响 | |
| 引用本文： | Zhang HL,Song XZ,Zhang ZT,Jiang H,Wang YX,Bai SB. UV-B辐射对杉木凋落叶分解的影响[J]. 应用生态学报, 2011, 22(4): 845-850 |
| 作者姓名： | Zhang HL Song XZ Zhang ZT Jiang H Wang YX Bai SB |
| 作者单位： | 1. 浙江农林大学浙江省森林生态系统碳循环与固碳减排重点实验室,浙江临安,311300 2. 河北北方学院,河北张家口,075000 |
| 基金项目： | 国家自然科学基金项目(30800152,31070440); 浙江省自然科学基金项目(Y5090007); 国家基础研究发展规划重点项目(2010CB950702,2010CB428503); 国家高技术研究发展计划项目(2009AA122001,2009AA122005); 科技部重大基础性研究项目(2007FY110300-08); 浙江农林大学科研启动基金项目(2007FR075)资助 |
| 摘 要： | 采用分解袋法对自然和UV-B辐射滤减环境下的杉木凋落叶进行分解试验.结果表明:与对照相比,UV-B辐射滤减处理使杉木凋落叶的分解速率降低了69.6%(P<0.001),凋落叶中氮、磷和木质素的相对含量分别增加150%、83.3%和13.8%,抑制了钾和碳的释放.木质素光降解在杉木凋落叶分解过程中的作用不明显.UV-B辐射可以加快杉木凋落叶的分解,促进氮、磷、钾和碳的释放,以及杉木林凋落物层的营养周转速度,增加地表的碳通量,对杉木林的碳源或碳汇功能具有潜在的影响. |
| 关 键 词： | 凋落叶分解 UV-B辐射 营养循环 木质素 杉木 |
Effects of UV-B radiation on the decomposition of Cunninghamia lanceolata leaf litter |
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| Zhang Hui-ling,Song Xin-zhang,Zhang Zhi-ting,Jiang Hong,Wang Yi-xiang,Bai Shang-bin. Effects of UV-B radiation on the decomposition of Cunninghamia lanceolata leaf litter[J]. The journal of applied ecology, 2011, 22(4): 845-850 | |
| Authors: | Zhang Hui-ling Song Xin-zhang Zhang Zhi-ting Jiang Hong Wang Yi-xiang Bai Shang-bin |
| Affiliation: | ZHANG Hui-ling1,SONG Xin-zhang1,ZHANG Zhi-ting2,JIANG Hong1,WANG Yi-xiang1,BAI Shang-bin1(1Zhejiang Province Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration,Zhejiang A & F University,Lin'an 311300,Zhejiang,China,2Hebei North College,Zhangjiakou 075000,Hebei,China) |
| Abstract: | A litterbag experiment was conducted to study the decomposition of Cunninghamia lanceolata leaf litter under ambient and reduced UV-B radiation(22.1% below ambient).Comparing with ambient treatment,the reduced treatment decreased the decomposition rate of C.lanceolata leaf litter by 69.6%(P<0.001),making the relative contents of nitrogen(N),phosphorus(P),and lignin in the litter increased by 150%,83.3%,and 13.8%,respectively,and the release of potassium(K) and carbon(C) slowed down.In the process of litter ... |
| Keywords: | leaf litter decomposition UV-B radiation nutrient cycling lignin Cunninghamia lanceolata |
| 本文献已被 CNKI 万方数据 PubMed 等数据库收录！ | |