U.S.-China Cooperative Research (Geography): Modeling and Measuring the Bidirectional Reflectance of Forest and Crop Canopies Using Boolean and Geometric Optics

这是波士顿大学的艾伦·H·斯特拉勒与中国科学院三个研究所的科学家进行的为期两年的合作项目：北京遥感应用研究所、吉林省长春光学精密机械研究所、吉林地理学院及其位于长春的净月潭遥感试验场。该项目由美国国家科学基金会和中国科学院联合发起。拟议的研究将开发能够更有效地测量和评估森林和作物冠层的遥感图像的模型。建模活动将在美国进行，中国在净月潭遗址进行辐射测量。这项拟议研究的最终结果将是测试一类重要的植物树冠与光的相互作用模型，该模型强调树冠的几何、三维性质。净月潭现场可用的专业知识和设备为验证这些在过去几年中一直在开发的树冠模型提供了一个独特的机会。如果它们被证明足够准确，这些模型可以在生态系统研究、农业监测活动和遥感应用中补充或取代其他模型。

This is a two year collaborative project between Alan H. Strahler of Boston University and scientists from three institutes of the Chinese Academy of Sciences: the Institute of Remote Sensing Application in Beijing; the Institute of Optics and Fine Mechanics in Changchun, Jilin Province; and the Jilin Institute of Geography and its Jingyuetan Remote Sensing Experimental Site in Changchun. The project is sponsored by NSF and the Chinese Academy of Sciences. The proposed study will develop models that will enable remotely sensed images of forest and crop canopies to be measured and evaluated more effectively. The modeling activities will be conducted in the United States and the radiometric measurements made in China at the Jingyuetan site. The net effect of the proposed research will be to test an important class of models for the interaction of plant canopies with light that emphasizes the geometric, three.dimensional nature of the canopy. The expertise and equipment available at the Jingyuetan site provide a unique opportunity to validate these canopy models, which have been under development during the past several years. If they prove sufficiently accurate, these models could supplement or supplant other models in ecosystem studies, agricultural monitoring activities, and remote sensing applications.