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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (17): 1-5.doi: 10.11924/j.issn.1000-6850.casb14120139

• 畜牧 动物医学 蚕 蜂 •    下一篇

锡林郭勒草地NDVI和牧草估产产量的变化特征

贺俊杰   

  1. 锡林浩特国家气候观象台
  • 收稿日期:2014-12-21 修回日期:2015-04-02 接受日期:2015-04-10 出版日期:2015-07-27 发布日期:2015-07-27
  • 通讯作者: 贺俊杰
  • 基金资助:
    锡林郭勒盟科技局科技项目 “锡林郭勒典型草原 CO2通量特征及对气候变化的响应” (201320)。

Variation Characteristics of the NDVI and Grass Estimation Yield in Xilingol Grassland

  • Received:2014-12-21 Revised:2015-04-02 Accepted:2015-04-10 Online:2015-07-27 Published:2015-07-27

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摘要： 为及时准确了解草地牧草生长状况，利用EOS/MODIS遥感资料结合地面同步调查数据，分析锡林郭勒草原草甸草原、典型草原和荒漠草原3种草地类型NDVI和草地生物量的月际变化特征。结果表明，利用S曲线回归估产模型测算的草地生长季逐月牧草产量能较好地反映其生长状况变化，体现了各类草地地上生物量的分布特征。其中，草甸草原牧草生长季NDVI和牧草平均估产产量变化范围分别为0.208~0.560和39.8~168.6g/m2（干重），峰值出现在8月；典型草原牧草生长季NDVI和牧草平均估产产量变化范围分别为0.194~0.480和33.7~146.2g/m2（干重），峰值出现在7月；荒漠化草原牧草生长季NDVI和牧草平均估产产量变化范围分别为0.130~0.185和10.0~29.8g/m2（干重），峰值出现在7月。

关键词: 青海高原, 青海高原, 气温, 日光温室, 变化规律

Abstract: To timely and accurately understand growing conditions of grassland, EOS/MODIS remote sensing data in combination with ground synchronous survey data were used to analyze the monthly variation characteristics of NDVI and the aboveground biomass of three grassland types which were the meadow steppe, typical steppe, and desert steppe in Xilingol grassland. The results showed that monthly grass yield during the growing season could reflect the change of grass growth conditions well using the S curve regression yield estimation model, and present the distribution characteristics of aboveground biomass in all three types of grassland. For the meadow steppe, the range of NDVI and the average grass yield in the grass growing season were 0.208-0.560 and 39.8-168.6 g/m2 respectively (dry weight) with the peak value in August; for the typical steppe, the figures were 0.194-0.480 and 33.7-146.2 g/m2 (dry weight) with the peak value in July; and for the desert steppe, the figures were 0.130-0.185 and 10.0-29.8 g/m2(dry weight) with the peak value in July.