土壤表现为朗伯体的土壤湿度临界值的确定方法初探——以黑土为例  

A Preliminary Method to Determine Critical Soil Moisture Value Presented by Lambert Reflector-A Case of Black Soil

作　　者：杜嘉[1] 赵云升[1] 吴太夏[1] 宋开山[2] 

机构地区：[1]东北师范大学城市与环境科学学院,吉林长春130024 [2]中国科学院东北地理与农业生态研究所,吉林长春130012

出　　处：《土壤通报》2007年第2期220-224,共5页Chinese Journal of Soil Science

基　　金：国家自然科学基金(49771057);中国科学院知识创新工程重要方向项目(KZCX3-SW-338-1)

摘　　要：多角度遥感中我们发现具有一定湿度的土壤表现为非朗伯体.而小于这个湿度时土壤则表现为朗伯体。本文以黑土土壤为例,通过对含水土壤偏振度的测量,建立偏振度与土壤湿度之间的数学模型,计算出偏振度为0时土壤湿度,这个湿度就是土壤表现为朗伯体和非朗伯体的湿度临界点,再通过实验验证我们得到的结论。The soil with relatively high moisture was represented as Non Lambert reflector, while the soil with low moisture was represented as Lambert reflector. The model between polarization degree and soil moisture was built by the determination of polarization degrees of black soil. According to the model, the soil moisture at 0 degree was determined as the critical value between Lambert reflector and Non Lambert reflector. Finally, the results were verified by some experiments.

关 键 词：土壤湿度 朗伯体 非朗伯体 临界值 

分 类 号：TP72[自动化与计算机技术—检测技术与自动化装置] S152[自动化与计算机技术—控制科学与工程]