基于RS和GIS的二三维一体化农业生态监测技术研究

Research on Agricultural Ecological Monitoring Technology of 2D and 3D Integration Based on RS and GIS

GIS技术已经在农业生态领域得到了广泛的应用,实现了对农业生态环境信息的空间和属性信息的一体化分析和综合处理,实现的方式还集中于二维角度;采用二三维相结合的方式进行生态监测,并以云南省老君山示范区为例,介绍了农业生态二三维一体化可视化系统的设计,从二维和三维角度实现对该示范区内的城镇、矿山、道路的影响的判断,达到监测预警的目的。通过实践证明了将农业生态监测模型与GIS技术结合,应用二三维一体化进行可视化分析,可为农业生态保护提供全新的空间技术支持方法。

GIS technology combined with agricultural ecological monitor data was introduced to implement 2-D visualization of ecological monitor and early-warning, more over, the ecological changed region obtained from model database can be read and demonstrated in a 3-D vi- sion. This made the system to function very well in displaying the variations of periodical eco-environment. Taking Laojunshan demonstration area of Yunnan Province, using both 2-D and 3-D modules, the variations of species diversity and site quality in area were analyzed. As a resuit, two aspects including system construction and system application were discussed respectively. The first part mainly presented the key technical problems ; And the next described the utilization of the program in demonstration area. This provides an effective method in agricultural ecosystem warning by adding GtS method into ecological model and implementing multiple dimensions in visualized analyze.