| 雪被去除对川西高山森林冬季土壤温度及碳、氮、磷动态的影响 |
| |
| 作者姓名： | Tan B Wu FZ Yang WQ Yang YL Wang A Kang LN |
| |
| 作者单位： | 四川农业大学林学院生态林业研究所,四川温江,611130 |
| |
| 基金项目： | 国家自然科学基金项目(30771702,31000213); 教育部新世纪优秀人才支持计划项目(NCET-07-0592)、教育部博士点基金项目(20105103110002); 四川省科技支撑计划项目(2010NZ0051); 四川省杰出青年学术技术带头人培育计划项目(2011JQ0035)资助 |
| |
| 摘 要： | 气候变暖导致的雪被动态格局变化可能深刻影响高山森林生态过程.为了解气候变暖背景下雪被的减少对川西高山森林土壤生态过程的影响,2009年10月19日-2010年5月18日,采用遮雪方法,研究了雪被去除对该区冷杉原始林土壤温度和碳、氮、磷的影响.结果表明:雪被去除加大了土温日变化幅度和冻融循环频次,使土壤冻结和融化时间提前.雪被去除使土壤可溶性碳和可溶性氮、有效磷、铵态氮和硝态氮冬季含量高峰提前到雪被覆盖期;雪被覆盖期至融化期的可溶性碳和氮及硝态氮含量增加,但有效磷和铵态氮含量降低,改变了其组分比例.气候变暖引起的川西高山森林雪被减少将改变土壤外部环境条件,进而影响土壤碳、氮和磷过程.
|
| 关 键 词： | 雪被 全球变暖 土壤温度 土壤养分 川西高山森林 |
Effects of snow pack removal on the dynamics of winter-time soil temperature, carbon, nitrogen, and phosphorus in alpine forests of west Sichuan |
| |
| Tan B,Wu FZ,Yang WQ,Yang YL,Wang A,Kang LN.Effects of snow pack removal on the dynamics of winter-time soil temperature, carbon, nitrogen, and phosphorus in alpine forests of west Sichuan[J].Chinese Journal of Applied Ecology,2011,22(10):2553-2559. |
| |
| Authors: | Tan Bo Wu Fu-zhong Yang Wan-qin Yang Yu-lian Wang Ao Kang Li-na |
| |
| Institution: | TAN Bo,WU Fu-zhong,YANG Wan-qin,YANG Yu-lian,WANG Ao,KANG Li-na (1Institute of Ecological Forestry,College of Forestry,Sichuan Agricultural University,Wenjiang 611130,Sichuan,China). |
| |
| Abstract: | The dynamic changes of snow pack as affected by global warming might have strong effects on the ecological processes in alpine forests. To understand the responses of soil ecological processes in the alpine forests of west Sichuan to the decreasing snow pack under global warming, a snow-shading experiment was conducted in a primary fir forest from October 19, 2009 to May 18, 2010, with the effects of snow pack removal on the dynamics of soil temperature, carbon, nitrogen, and phosphorus investigated. The re... |
| |
| Keywords: | snow pack global warming soil temperature soil nutrient alpine forests of west Sichuan |
| 本文献已被 CNKI 万方数据 PubMed 等数据库收录！ |
|
