节点文献
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
【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。
【Abstract】 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;
【Key words】 Soil moisture; Lambert reflector; Non Lambert reflector; Critical value;
【Key words】 Soil moisture; Lambert reflector; Non Lambert reflector; Critical value;
【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)
- 【文献出处】 土壤通报 ,Chinese Journal of Soil Science , 编辑部邮箱 ,2007年02期
- 【分类号】TP79
- 【被引频次】4
- 【下载频次】228