| 锡林郭勒草地NDVI和牧草估产产量的变化特征 |
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| 引用本文： | 贺俊杰.锡林郭勒草地NDVI和牧草估产产量的变化特征[J].中国农学通报,2015,31(17):1-5. |
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| 作者姓名： | 贺俊杰 |
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| 作者单位： | 锡林浩特国家气候观象台 |
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| 基金项目： | 内蒙古自治区气象局“遥感应用创新团队”自选项目(201401) |
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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。
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| 关 键 词： | 青海高原 青海高原 气温 日光温室 变化规律 |
| 收稿时间： | 2014/12/21 0:00:00 |
| 修稿时间： | 4/2/2015 12:00:00 AM |
Variation Characteristics of the NDVI and Grass Estimation Yield in Xilingol Grassland |
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| Abstract: | For timely and accurate understanding of pasture growth conditions, the use of EOS/MODIS remote sensing data and field survey data synchronization, analysis Xilingol meadow steppe, typical steppe and desert steppe grassland type three kinds of grass biomass and NDVI monthly variation characteristics. The results showed that the yield of the S-curve regression monthly yield estimation model used to estimate the grass growing season can reflect changes in vegetation growth process, reflecting the distribution of various types of grassland biomass. Among them, the meadow grassland and pasture growing season NDVI average yield estimation range production changes were 0.185 ~ 0.560 and 39.8 ~ 168.6 g/m2 (dry weight), peaking in August; typical grassland pasture and forage growing season NDVI average yield estimation yields range were 0.170 ~ 0.480 and 33.7 ~ 146.2 g/m2 (dry weight), peaking in July; desertification grassland pasture growing season NDVI and pasture range average yield estimation production changes were 0.135 ~ 0.215 and 15.1 ~ 29.8 g/m2 (dry weight), peaking in July. |
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| Keywords: | Xilingol MODIS vegetation index grassland biomass S-curve regression model |
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