科尔沁沙地人工小叶锦鸡儿群落小气候效应研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 20 期数: 2013年04期页码: 145-148 栏目: 出版日期: 2013-08-28

Title:: Microclimate Effects of Planted Caragana microphylla Communities in Horqin Sandy Land

作者:: 贺山峰^1,2, 邱兰兰¹, 蒋德明², 骆永明²; 1. 河南理工大学, 河南焦作 454000;
2. 中国科学院沈阳应用生态研究所, 沈阳 110016

Author(s):: HE Shan-feng^1,2, QIU Lan-lan¹, JIANG De-ming², LUO Yong-ming²; 1. He’nan Polytechnic University, Jiaozuo, He’nan 454000, China;
2. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China

摘要:: 以流动沙丘和小叶锦鸡儿群落为研究对象，通过对各样地内风速、空气温度、空气相对湿度和地温等指标的观测分析，研究了不同恢复年限的人工植被对小气候的改善效应。结果表明：（1）小叶锦鸡儿群落对近地表风速有很大的阻滞作用，在30 cm高度上，6 a生和11 a生小叶锦鸡儿灌木林内的风速比流动沙丘分别降低了71.9%和76.0%。（2）小叶锦鸡儿林内夏季白天平均温度明显低于流动沙丘，6 a生和11 a生小叶锦鸡儿林内日均气温分别比流动沙丘低3.7℃和4.9℃。（3）小叶锦鸡儿群落内空气相对湿度较流动沙丘显著提高。（4）小叶锦鸡儿林内土壤浅层温度日变幅较流动沙丘减小。研究结果对于进一步探讨极端干旱条件下人工植被近地表物质和能量交换具有重要意义。

Abstract:: Caragana microphylla is one of the key species for vegetation restoration in Horqin Sandy Land. Adopting field investigation and field experiments, the microclimate effects of artificial C. microphylla communities with different age were studied by observing wind velocity, air temperature, relative humidity and soil temperature. The results show that vegetation cover has an obvious wind-breaking effect near ground surface, the wind velocity in the 6- and 11-year-old C. microphylla shrubs at the height of 30 cm decreases by 71.9% and 76.0%, respectively, compared with shifting dunes, mean daily temperature in the 6- and 11-year-old C. microphylla communities is 3.7 ℃ and 4.9 ℃ which is lower than in shifting dunes, respectively; air relative humidity in the shrubs is higher than in shifting dunes; soil temperature in the plantation is lower than in shifting dunes. The observed results are of significance to further exploring material and energy exchange near surface layer of vegetation in the extremely arid conditions.

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更新日期/Last Update: 1900-01-01