应用生态学报2013，Vol.24Issue(2)：379-387,9.
黄土丘陵沟壑区苹果树冠截留规律
Crown interception of apple trees in loess hilly and gully region, Northwest China
摘要
Abstract
Taking the apple trees at their full-fruit stage in the loess hilly and gully region of Shaanxi as test objects, a three-year consecutive monitoring was conducted on the precipitation outside the tree crown, the through fall of the crown, and the stem flow from 2008 to 2010, with the effects of different precipitation factors on the crown interception analyzed. In the study region, the stem flow rate and crown interception rate of the trees accounted for 0. 8% and 8. 9% of the precipitation, respectively, the inter-plant interception was higher than the inter-row interception, and the interception increased with the decreasing distance to the stem. In rainy season, the crown interception was greater while the interception rate was smaller; in drought season, it was in adverse. The crown interception increased with increasing precipitation amount, precipitation intensity, precipitation duration, and precipitation interval, and the relationships followed power function or logarithmic function. The interception rate was negatively correlated with precipitation amount, precipitation intensity, and precipitation duration, but positively correlated with precipitation interval, and the relationships were in power function. Among the precipitation factors, precipitation amount had the greatest effects on the crown interception capability of the apple trees.关键词
苹果树冠/降水因子/截留能力Key words
apple tree crown/ precipitation factor/ interception capability分类
农业科技引用本文复制引用
李晶晶,白岗栓..黄土丘陵沟壑区苹果树冠截留规律[J].应用生态学报,2013,24(2):379-387,9.基金项目
国家"十二五"科技支撑计划项目(2011BAD31B05)资助. （2011BAD31B05）
