Gross rainfall amount and maximum rainfall intensity in 60-minute influence on interception loss of shrubs: a 10-year observation in the Tengger Desert.
Gross rainfall amount and maximum rainfall intensity in 60-minute influence on interception loss of shrubs: a 10-year observation in the Tengger Desert.
复制标题
60分钟总降雨量和最大降雨强度对灌木截留损失的影响——腾格里沙漠10年观测
DOI：
10.1038/srep26030
复制
发表时间：
2016-05-17
影响因子：
4.6
通讯作者：
Tan HJ
中科院分区：
文献类型：
--
作者：
Zhang ZS;Zhao Y;Li XR;Huang L;Tan HJ
在水分有限的地区，降雨截留受降雨特性和树冠特征的影响。降雨过程中的降雨特性，除了总降雨量和持续时间（GR和RD），最大降雨强度和无雨间隙（RG），可能会严重影响穿透雨和植物的拦截。2004 - 2014年（除2007年外），选取柠条锦鸡儿（Caragana korshinskii）和油蒿蒿（Artemisia ordosica）灌木，对210次降雨过程中的穿透降水进行了观测。各种降雨特性被自动测量，树冠特征，即，测定了两种灌木的树高、分支指数、叶面积指数、冠幅和体积。C. korshinskiiiandA.鄂尔多斯分别为29.1%和17.1%。降雨特性对灌木穿透雨和截留的贡献大于树冠特性。灌木林的降雨量和截留量由GR、RI 60（60 min最大雨强）、RD和RG的重要性递减。但两种灌木的相对穿透雨和截留量对降雨特性和树冠特征的响应不同。korshinskii与降雨特性关系密切，而A.鄂尔多斯地区对树冠特征的依赖性更强。我们强调长期监测是非常必要的，以确定穿透雨和截留与树冠特征之间的关系。
In water-limited regions, rainfall interception is influenced by rainfall properties and crown characteristics. Rainfall properties, aside from gross rainfall amount and duration (GR and RD), maximum rainfall intensity and rainless gap (RG), within rain events may heavily affect throughfall and interception by plants. From 2004 to 2014 (except for 2007), individual shrubs ofCaragana korshinskiiandArtemisia ordosicawere selected to measure throughfall during 210 rain events. Various rainfall properties were auto-measured and crown characteristics, i.e., height, branch and leaf area index, crown area and volume of two shrubs were also measured. The relative interceptions ofC. korshinskiiandA. ordosicawere 29.1% and 17.1%, respectively. Rainfall properties have more contributions than crown characteristics to throughfall and interception of shrubs. Throughfall and interception of shrubs can be explained by GR, RI60(maximum rainfall intensities during 60 min), RD and RG in deceasing importance. However, relative throughfall and interception of two shrubs have different responses to rainfall properties and crown characteristics, those ofC. korshinskiiwere closely related to rainfall properties, while those ofA. ordosicawere more dependent on crown characteristics. We highlight long-term monitoring is very necessary to determine the relationships between throughfall and interception with crown characteristics.