| 高寒矮嵩草草甸覆被动态变化对土壤气候的影响分析 |
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| 引用本文： | 李英年,赵亮,徐世晓,赵新全,古松. 高寒矮嵩草草甸覆被动态变化对土壤气候的影响分析[J]. 干旱区资源与环境, 2005, 19(Z1): 125-129 |
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| 作者姓名： | 李英年 赵亮 徐世晓 赵新全 古松 |
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| 作者单位： | 中国科学院西北高原生物研究所,西宁,810001 |
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| 基金项目： | 中国科学院知识创新工程重大项目(KZCX1-SW-01-01A);国家重点基础研究发展规划项目(2002CB412501);中日合作"温带高山草原生态系统的碳素动态和温暖化影响的研究"及中日合作"亚太地区环境创新战略计划(APEIS)". |
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| 摘 要： | 文中从季节动态变化出发,探讨了覆被对土壤温、湿度的影响特点。表明:有植被覆盖区,在4月下旬到8月下旬期间的随季节进程中,土壤温度与无植被区相比是逐渐升高的,其温度升高的倾向率达0.2276℃/旬。随植被盖度的加大土壤湿度降低,0-60cm整层土壤湿度以1.2587%/旬的速率递减。植被能滞留大部分太阳辐射,发生植被的蒸散要消耗大量的土壤水分。
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| 关 键 词： | 矮嵩草草甸 覆被动态变化 土壤气候 土壤温度 土壤湿度 |
| 文章编号： | 1003-7578(2005)07-125-05 |
| 修稿时间： | 2005-10-15 |
An Analysis on the Effects of Coverage Change on Soil Climate of Alpine Kobresia humilis meadow |
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| LI Ying-nian,ZHAO Liang,XU Shi-xiao,ZHAO Xin-quan,GU Song. An Analysis on the Effects of Coverage Change on Soil Climate of Alpine Kobresia humilis meadow[J]. Journal of Arid Land Resources and Environment, 2005, 19(Z1): 125-129 |
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| Authors: | LI Ying-nian ZHAO Liang XU Shi-xiao ZHAO Xin-quan GU Song |
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| Abstract: | We focus on seasonal dynamics and analyze the effects of coverage change on soil climate of alpine Kobresia humilis meadow.The analyzed results as following:compare with uncovered area,soil temperature increase along with seasonal change from the last ten-day of April to the last ten-day of August in covered area,and the temperature increase rate reach 0.2276℃/ten days.Soil humidity decreases along with coverage increase,soil humidity of 0-60cm decrease with a rate of 1.2587%/ten days.Vegetation resort most of radiation of sun,at the same time,it decrease the heat radiation to atmosphere;vegetation can decrease dissipation of soil moisture,synchronously,it use up a mass of soil moisture through plant transpiration during vegetation photosynthesis. |
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| Keywords: | Kobresia humilis meadow coverage change soil climate soil temperature soil humidity |
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