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

被引：70

作者：

谭波

吴福忠

杨万勤

杨玉莲

王奥

康丽娜

机构：

[1] 四川农业大学林学院生态林业研究所

来源：

应用生态学报 | 2011年 / 10期

关键词：

雪被; 全球变暖; 土壤温度; 土壤养分; 川西高山森林;

D O I：

暂无

中图分类号：

S714 [森林土壤学];

学科分类号：

090301 [土壤学];

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.

引用

页码：2553 / 2559

页数：7

共 17 条

[1]

冻融末期川西亚高山/高山森林土壤水解酶活性特征[J] 谭波;吴福忠;杨万勤;余胜;杨玉莲;王奥; 应用生态学报 2011, 05

[2]

积雪对长白山阔叶红松林土壤温度的影响[J] 于小舟;袁凤辉;王安志;吴家兵;关德新; 应用生态学报 2010, 12

[3]

Annual and Monthly Variations in Litter Macronutrients of Three Subalpine Forests in Western China[J] S.KELLOMKI Pedosphere 2006, 06

[4]

Experimental snowpack reduction alters organic matter and net N mineralization potential of soil macroaggregates in a northern hardwood forest[J] J. Megan Steinweg;Melany C. Fisk;Benjamin McAlexander;Peter M. Groffman;Janet P. Hardy Biology and Fertility of Soils 2008,

[5]

Responses of springtail and mite populations to prolonged periods of soil freeze-thaw cycles in a sub-arctic ecosystem[J] Heidi Sjursen Konestabo;Anders Michelsen;Martin Holmstrup Applied Soil Ecology 2007,

[6]

The role of terrestrial snow cover in the climate system[J] Steve Vavrus Climate Dynamics 2007,

[7]

Soil microbial and nutrient dynamics in a wet Arctic sedge meadow in late winter and early spring[J] Kate A. Edwards;Jennifer McCulloch;G. Peter Kershaw;Robert L. Jefferies Soil Biology and Biochemistry 2006,

[8]

Winter in northeastern North America: a critical period for ecological processes[J] John L. Campbell;Myron J. Mitchell;Peter M. Groffman;Lynn M. Christenson;Janet P. Hardy Frontiers in Ecology and the Environment 2005,

[9]

Repeated freeze–thaw cycles and their effects on biological processes in two arctic ecosystem types[J] Klaus S Larsen;Sven Jonasson;Anders Michelsen Applied Soil Ecology 2002,

[10]

Effects of mild winter freezing on soil nitrogen and carbon dynamics in a northern hardwood forest[J] Peter M. Groffman;Charles T. Driscoll;Timothy J. Fahey;Janet P. Hardy;Ross D. Fitzhugh;Geraldine L. Tierney Biogeochemistry 2001,

← 1 2 →