| 王兴菊,许士国,李文义,王昊.扎龙湿地季节性冻土冻融规律及其生态水文功能研究[J].,2008,(6):897-903 |
| 扎龙湿地季节性冻土冻融规律及其生态水文功能研究 |
| Freezing-thawing rule of seasonal frozen soil and its eco-hydrological function in Zhalong Wetland |
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| DOI：10.7511/dllgxb200806021 |
| 中文关键词: 扎龙湿地 冻融规律 生态水文功能 季节性冻土 |
| 英文关键词: Zhalong Wetland freezing-thawing rule eco-hydrological function seasonal frozen soil |
| 基金项目:基金项目 [HTSS]国家自然科学基金资助项目重点项目50139020. |
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| 中文摘要: |
| 扎龙湿地季节性冻土广泛分布．利用我国第一个湿地气象水文自动观测站的地温资料，初步研究了湿地季节性冻土的冻融规律，通过分析径流量、降水量等长系列数据，研究了季节性冻土的冻融过程对湿地生态水文过程的影响．结果表明 扎龙湿地土壤每年从10月20日左右开始进入不稳定冻结期，第2年3月下旬达到冻结最大深度，于次年的3月5日左右开始消融到5月下旬全部消融．季节性冻土是影响湿地生态水文过程的重要因素，冻结滞水是天然和人工植物越冬、春季繁衍的水分代谢均衡不可缺少的，甚至是惟一水资源，是促进盐渍化、沼泽化和保持生态平衡的主导因子． |
| 英文摘要: |
| In Zhalong Wetland the seasonal frozen soil distributes extensively which plays a crucial role in the eco-hydrological processes. The freezing and thawing processes are analyzed based on the location observation of the soil temperature from the first automatic monitoring station our country constructed , and the freezing and thawing characteristics are obtained. In addition by analyzing the data, such as runoff, precipitation and so on, the eco-hydrological function for the wetland of the frozen soil is discussed. The results show that the soil begins to freeze around October 20 and the depth of frozen soil maximizes in March of the next year, and the frozen soil begins to melt around March 5, finishes melting around May 20 of the next year; the frozen soil is the key factor influencing the eco-hydrological processes, and the frozen backwater is indispensable even is unique water resources for the natural and artificial plants to live through winter and multiply in springtime and is the predominant factor that keeps the ecosystem balance and promotes the salinization and swampiness. |
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