摘要
本研究通过收集国内已发表的文献中具有凋落物分解常数的数据,采用SPSS13.0软件综合分析中国森林凋落物分解速率的影响因素.结果发现:凋落物类型对凋落物分解速率有显著影响(P<0.05),凋落叶氮含量与分解速率呈极显著正相关(P<0.01).在同一样地的研究中,混合分解的凋落叶分解常数极显著高于单独分解的(P<0.01).叶习性对凋落叶分解速率没有显著影响(P>0.05),但在中国的温带地区则有显著影响(P<0.05).在全国尺度上树种组成对凋落物分解速率没有显著影响(P>0.05).凋落叶分解速率与经度、年均温和降水量成极显著正相关(P<0.01),与纬度和海拔成极显著负相关(P<0.01).凋落叶分解速率的Q10值为1.768.网袋孔径与土壤类型对凋落叶分解速率亦均有极显著影响(P<0.01).
The litter decomposition rate in China forests is estimated from published data, using SPSS13.0 to analyze these data. The results showed that the litter types had a significant influence on the litter decomposition rate （ P 〈 0. 05 ）, and the nitrogen content of the litter was significantly correlated to the decomposition rate （P 〈 0. 01 ）. In the same research, the decomposition rate of mixed litter was significantly higher than that of single litter （ P 〈 0. 01 ）, and the leaf habit had no significant effect on the decomposition rate （P 〉 0. 05 ）, while had a significant effect in China＇s temperate zone （P 〈 0. 05 ）. Over national, the constitution of species had no significant influence on decomposition rate （P 〉 0. 05 ） . Leaf decomposition had a remarkable positive correlation with longitude, average annual temperature and precipitation （P 〈 0. 01 ）, while had a significant negative correlation with latitude and elevation （P 〈 0. 01 ） . The litter decomposition rate＇s Q10 is 1. 768, and it also had a significant correlation between litter bags and soil types （P 〈0. 01 ）.
出处
《亚热带资源与环境学报》
2010年第3期56-63,共8页
Journal of Subtropical Resources and Environment
基金
福建省自然科学基金项目(2008J0124)
福建师范大学本科生课外科技立项资助项目(BKL2007019)
