【摘要】 探索了利用遥感方法进行牧草消耗量估测,进而进行大面积天然草原地上净第一性生产力估测的方法和技术流程。并以锡林郭勒草原为例,提出了利用MODIS-NDVI反演最高生物量期的牧草采食消耗量,再利用地面获取的旬度采食系数,推算整个生长季的牧草采食消耗量的思路。在获得草原放牧消耗量基础上,反演了草原净第一性生产力。由于野外测量草原净第一性生产力和消耗量数据的难度较大,所以该方法中的定量分析缺乏对研究区草原净第一性生产力分布特征和消耗量的直接验证,有关反演的方法和可靠性仍有待于进一步验证。更多还原

【Abstract】 The method and technical process of estimating intake and net primary production of grassland based on remote sensing data were studied.A case study about Xilingol grassland was to retrieve intake quantities of herbage during the period of tiptop biomass of grassland by remote sensing,and design a ground trial to obtain a parameter,so that the total intake quantity of growth period could also be gotten.Based on the result,it was able to estimate ANPP in Xilingol grassland.Due to difficulty of collecting trial data in field,the limitation of the study was that the distribution characteristic of ANPP and Intake quantity could not be validated.The study still need to be pursued ulteriorly.更多还原