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胡杨树干液流与树干生物电特性的关联

发表时间:2016-08-15  浏览量:1385  下载量:593
全部作者: 范 乐,李 磊,裴志永,石玉敏
作者单位: 内蒙古农业大学林学院;阿拉善盟额济纳旗林业工作站
摘 要: 水资源紧缺是引起胡杨林衰退的原因,通过监测装置实时获取胡杨水分生理指标数据,可为开展胡杨保护与恢复工作提供技术支持。胡杨树干液流是描述胡杨水分状况的重要指标,树干生物电指标易于监测,其主要受树干含水量的影响。本研究通过实地测量的树干液流和生物电数据,建立两者的内在关联关系。树干液流和生物电均表现出了日周期变化的单峰曲线规律,两者关系为负相关,且对季节和树木生长的不同阶段反应明显,夏秋季的变化幅度强于春季,中年胡杨的液流和生物电在数值上要高于成过熟胡杨。通过对两者进行回归分析,得出其存在多项式表征关系,中年胡杨回归方程的回归系数较高,相关系数为0.766 4;而成过熟胡杨回归系数相对较低,相关系数为0.436 1. 综合分析可知,单纯利用树干液流信息来解释生物电信息还不全面,需要加入环境要素进行综合分析。研究结果为开发胡杨水分生理指标无线检测装置提供了理论支持。
关 键 词: 林业工程;胡杨;树干液流;生物电
Title: Study on orderliness between Populus diversifolia trunk sap flow and bioelectronics characteristics
Author: FAN Le, LI Lei, PEI Zhiyong, SHI Yumin
Organization: Forestry College, Inner Mongolia Argricultural University; Forestry Station of Ejina Banner
Abstract: The shortage of water resource is the reason that Populus diversifolia ebb, the moisture physiological index can be obtained real-time through monitoring device, the technical support can be provided for protection and rehabilitation of P. diversifolia. P. diversifolia trunk sap flow is the token of P. diversifolia moisture, trunk bioelectrical index is easy to monitor, and easy to influenced by trunk moisture. Through survey on the spot trunk sap flow and bioelectrical index, the incidence relationship of them is built. Trunk sap flow and bioelectrical index shows periodic change of unimodal curve, negative relationship, and distinct to different growing period and season, summer and autumn changes more than spring, middle Populus diversifolia’s trunk sap flow and bioelectrical index are more than old P. diversifolia. In regression analysis, polynomial relationship can be expected, coefficient of regression are high in middle P. diversifolia and low in old (correlation coefficient: 0.766 4/0.436 1). In general, that bioelectrical index is explained only by using trunk sap flow information is not complete, environment elements should be included. The result provides theoretical support for exploitation of wireless detection equipment about P. diversifolia moisture physiological index.
Key words: forestry engineering; Populus diversifolia; sap flow; bioelectricity voltage
发表期数: 2016年8月第15期
引用格式: 范 乐,李 磊,裴志永,等. 胡杨树干液流与树干生物电特性的关联[J]. 中国科技论文在线精品论文,2016,9(15):1495-1501.
 
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