JOURNAL OF NATURAL RESOURCES ›› 1997, Vol. 12 ›› Issue (4): 363-369.doi: 10.11849/zrzyxb.1997.04.011

• Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS • Previous Articles     Next Articles

KEY TECHNICAL LINKS AND SOLUTION WAYS OF SETTING UP AWORKING SYSTEM FOR YIELD ESTIMATIONS OF THE MAINCROPS OF CHINA BY SATELLITE REMOTE SENSING

Chen Shenbin, Sun Jiulin   

  1. Commission for Integrated Survey of Natural Resources, Chinese Academy of Sciences, Beijing 100101
  • Received:1997-04-29 Revised:1997-07-02 Online:1997-12-25 Published:1997-12-25

Abstract: his paper points out the main technical links of setting up, in China, a working system for yield estimations of the main crops (wheat, maize, rice, cotton, soybean ) by means of the remote sensing techniques according to the basic features of the farmland and the cropping system as well as the practice of yield estimations by means of remote sensing in the major crop growing regions from 1991 to 1996. The key links include the overall design of the engineering of the working system, the regionalization of estimating the yield by satellite remote sensing, the background database establishment, the assimilative techniques of remote sensing information, the extraction of the planting area of crops, the monitoring of crop growth and the model of the per unit area yield, and the establishment of a working system. This paper also describes the envi sagement of the technical programme and steps for realizing the system; that is, to unify organization and implementation and to avoid repeat. First of all, grasking the yield estimations by satellite remote sensing for the main production area of crops and choosing Henan, Anhei and Jiangsu provinces to develop the experiment of integrated yield estimations of the five crops. Then setting up a method system of the extraction of planting area of crops and of monitoring the crop growth and yield for different regions or crops. According to the practical conditions an authentic or fictitious working system for the yield estimations by satellite remote sensing may be set up.

Key words: ain crops, yield estimation, remote sensing, working system, technical link