科尔沁沙地小叶锦鸡儿灌丛降雨截留特征研究

草业学报 ›› 2010, Vol. 19 ›› Issue (5): 267-272.

科尔沁沙地小叶锦鸡儿灌丛降雨截留特征研究

李衍青^1,2,张铜会¹,赵学勇¹,刘新平¹,童勋章^1,2,云建英¹

1.中国科学院寒区旱区环境与工程研究所,甘肃兰州 730000;
2.中国科学院研究生院,北京100049

收稿日期:2009-11-30 出版日期:2010-05-25 发布日期:2010-10-20
作者简介::李衍青(1982-), 男,山东高密人,在读硕士。E-mail:liyanqing001001@163.com
基金资助:
国家重点基础研究发展计划及课题(2009CB421303)和国家自然科学基金项目(40871004,40801036)资助

Rainfall interception and stemflow for Caragana microphlla in Horqin Sandy Land, northern China

LI Yan-qing^1,2, ZHANG Tong-hui¹, ZHAO Xue-yong¹, LIU Xin-ping¹,
TONG Xun-zhang^1,2, YUN Jian-ying¹

1.Cold and Arid Regions Environmental and Engineering Research Institute, Chinese
Academy of Sciences, Lanzhou 730000, China;
2.Graduate School of Chinese
Academy of Sciences, Beijing 100049, China

Received:2009-11-30 Online:2010-05-25 Published:2010-10-20

摘要/Abstract

摘要： 本研究于2009年6-9月,在科尔沁沙地选择主要固沙灌木——小叶锦鸡儿为研究对象,通过对该灌丛的穿透雨和树干茎流的观测,确定了截留量、穿透雨量和茎流量在降雨分配中的比例,分析了降雨量和降雨强度对该灌丛的降雨截留量、穿透量的影响。试验期间,完整观测了穿透雨和茎流量的降雨总共为103.1mm,其中的穿透雨量、茎流量和截留量分别为73.1,4.1和25.9mm,分别占降雨的百分比为70.9%,4.0%和25.1%。回归分析表明该灌丛的穿透雨量、树干茎流量和截留量都与降雨量呈正相关关系,而穿透百分比和截留百分比则与降雨量的指数函数拟合较好;穿透百分比与1h最大降雨强度呈指数相关关系,而截留百分比和1h最大降雨强度与幂函数拟合较好。

Abstract: From June to Sepetember 2009, a typical shrub, Caragana microphlla, commonly used to stabilise sand dunes, was selected from Horqin Sandy Land to investigate rainfall redistribution. During the entire experiment, the cumulative amount of rainfall was 103.1 mm. The amount of throughfall (TF) was 73.1 mm (70.9% of the total rainfall), of stemflow (SF) was 4.1 mm (4.0%), and of interception (I) was 25.8 mm (25.1%). Regression analysis showed a significant positive linear correlation between rainfall and TF, SF, and I. The correlation between rainfall and TF% is well represented by an exponential function as is I%. Furthermore, TF% was an exponential function of the rain intensity in 1 hour (I_h), but for I% was a power function of I_h in this experiment.

中图分类号:

S157.4⁺33

李衍青,张铜会,赵学勇,刘新平,童勋章,云建英. 科尔沁沙地小叶锦鸡儿灌丛降雨截留特征研究[J]. 草业学报, 2010, 19(5): 267-272.

LI Yan-qing, ZHANG Tong-hui, ZHAO Xue-yong, LIU Xin-ping,
TONG Xun-zhang, YUN Jian-ying. Rainfall interception and stemflow for Caragana microphlla in Horqin Sandy Land, northern China[J]. Acta Prataculturae Sinica, 2010, 19(5): 267-272.

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