基于彩色航片和成数抽样的绿化调查方法研究

探索科学、实用的利用彩色航片结合成数抽样开展城市和平原绿化调查的方法,解决目前平原绿化调查与监测技术相对滞后的技术问题。基于彩色航片为底图,采用不同成数抽样方案布设样点,并判读样点地类类型,完成试验区绿化调查。结果不仅找出了不同成数抽样方案对绿化调查工作量和成果精度的不同影响,而且找出了该调查方法本身的优缺点和研究材料存在的问题,为今后深入针对性研究奠定理论基础。

Study on the Method of Afforestation Investigation Based on Aerial Images and Percentage Sampling

The aim was to explore scientific and practical method of afforestation investigation based on aerial images and percentage sampling,in order to solve the present problem on the relatively backward technology of plain afforestation investigation and monitoring.Based on aerial images for base maps,we set sample points by using different schemes of percentage sampling and integrate the land sort type of sample points,the afforestation investigation is completed on the test area.By analysis and discussion,it is found out that not only different schemes of percentage sampling have different effects on the survey work load and achievement precision of afforestation investigation.,but also to the advantages and disadvantages of the method of afforestation investigation and problems existing in research materials,providing theoretical basis for pertinency study deeply in future.