| 天山北坡中东段天然草地光谱植被指数特征 |
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| 引用本文： | 黄敬峰,王秀珍.天山北坡中东段天然草地光谱植被指数特征[J].山地学报,1999,17(2):119-124. |
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| 作者姓名： | 黄敬峰 王秀珍 |
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| 作者单位： | 浙江大学农业遥感与信息技术研究所,杭州,310029 |
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| 摘 要： | 据１９９２－１９９４年天山北坡中东段各种主要天然草地类型混合牧草群落光谱观测资料，牧草产量资料分析发现，天然草地牧草产量与光谱被指数都具有季节变化特征，呈现出低到高，再由高到低的变化规律；天然草地光谱植被指数可以较了地反映牧草产量的年际变化和不同类型天然草地的产量差异，由于降水等自然条件的影响，牧草产量的年份，光谱植被指数也高，牧草产量低的年份，光谱植被指数也低。
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| 关 键 词： | 草地生产力 光谱植被指数 |
| 修稿时间： | 1998-09-29 |
THE CHARACTERISTICS OF NATURAL GRASSLAND SPECTRAL VEGETATION INDICES IN EASTERN AND MIDDLE PART OF NORTHERN TIANSHAN MOUNTAIN |
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| HUANG Jingfeng,WANG Xiuzhen.THE CHARACTERISTICS OF NATURAL GRASSLAND SPECTRAL VEGETATION INDICES IN EASTERN AND MIDDLE PART OF NORTHERN TIANSHAN MOUNTAIN[J].Journal of Mountain Research,1999,17(2):119-124. |
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| Authors: | HUANG Jingfeng WANG Xiuzhen |
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| Abstract: | Urumqi and Fukang are selcted as experimental regions in eastern and middle part of northern Tianshan Mountain.The grassyield and its refcectgance are observed from 1992 to 1994 at different grassland,the annual variation role is studied and the differences of grass yield and spectral vegetation indices are compared. The grass yield and vegetation indices have annual variation characteristics which is that their values are low in spring and then increase,and reach the maximum value in summer,and after that they decrease.The spectral vegetation indices can reflect the change of grass yield of different natural grasslands,therefore it is possible to classify different natural grasslands and to determine the optimum period of interpretation through spectral vegetation indices.The spectral vegetation indices can be used to monitor the grass yield and to predict the maximum yield because the spectral vegetation indices vary with grass yield in different seasons and from year to year.This is the basic work of classification and interpretation of different natural grass lands and provides grass yield estimation by remote sensing data. |
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| Keywords: | grassland production spectral vegetation indices |
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