Jian Sheng-Qi, Zhao Chuan-Yan, Fang Shu-Min, Yu Kai, Wang Yang, Liu Yi-Yue, Zheng Xiang-Lin, Peng Shou-Zhang
State Key Laboratory of Grassland Agro-ecosystems, Lanzhou University, Lanzhou 730000, China.
Ying Yong Sheng Tai Xue Bao. 2012 Sep;23(9):2383-9.
From May to October 2011, an investigation was conducted on the effects of rainfall and its intensity on the canopy interception, throughfall, and stemflow of Caragana korshinskii and Hippophae rhamnoides, the main shrub species commonly planted to stabilize soil and water in the Anjiagou catchment of Loess Plateau. A total of 47 rainfall events were observed, most of which were featured with low intensity, and the total amount and average intensity of the rainfalls were 208.9 mm and 2.82 mm x h(-1), respectively. As a whole, the rainfall events of 2-10 mm and 0.1-2 mm x h(-1) had the highest frequency. The canopy interception, throughfall, and stemflow of C. korshinski were 58.5 mm (28%), 124.7 mm (59.7%), and 25.7 mm (12.3%), while those of H. rhamnoides were 17.6 mm (8.4%), 153. 1 mm (73.3%), and 38.2 mm (18.3%), respectively. Regression analysis showed that the canopy interception, throughfall, and stemflow of the two shrub species all had significant positive correlations with the rainfall amount, and had exponent or power correlations with the rainfall amount and the maximum rainfall intensity in 10 minutes.
2011年5月至10月，针对黄土高原安家沟流域用于水土保持的主要灌木树种柠条锦鸡儿和沙棘，开展了降雨及其强度对树冠截留、穿透雨和树干茎流影响的调查。共观测到47场降雨事件，其中大部分降雨强度较低，降雨总量和平均强度分别为208.9毫米和2.82毫米·小时⁻¹。总体而言，降雨量为2 - 10毫米、降雨强度为0.1 - 2毫米·小时⁻¹的降雨事件出现频率最高。柠条锦鸡儿的树冠截留量、穿透雨量和树干茎流量分别为58.5毫米（28%）、124.7毫米（59.7%）和25.7毫米（12.3%），而沙棘的相应数据分别为17.6毫米（8.4%）、153.1毫米（73.3%）和38.2毫米（18.3%）。回归分析表明，两种灌木树种的树冠截留量、穿透雨量和树干茎流量均与降雨量呈显著正相关，且与降雨量及10分钟最大降雨强度呈指数或幂函数关系。
