中国农业气象

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封育对典型草原植被结构及光谱特征的影响

王英舜;师桂花;侯琼;国振杰;何旭升;   

  1. 锡林浩特国家气候观象台;内蒙古气象科研所;
  • 出版日期:2010-08-10 发布日期:2010-08-10
  • 基金资助:
    国家自然科学基金项目(30760102);; 中国气象局公益行业专项(GYHY200906029);; 内蒙古气象局项目(nmqxkjcx200828)

Impact of Enclosure on the Vegetation Structure and Spectral Reflectance Characteristics in the Typical Steppe

WANG Ying-shun1,SHI Gui-hua1,HOU Qiong2,GUO Zhen-jie1,HE Xu-sheng1(1.Xilinhot National Climate Observing Station,Xilinhot 026000,Inner Mongolia,China;2.Meteorological Institute of Inner Mongolia,Huhhot 010051)   

  • Online:2010-08-10 Published:2010-08-10

摘要: 在2008年7月-2009年5月,以锡林郭勒典型草原为研究区,分别对封育草地和自由放牧草地的光谱反射率、草层高度、覆盖度和地上生物量进行了测定。结果表明:封育能够明显改善典型草原植被结构,增加牧草种类,提高牧草地上生物量;封育区植被光谱特征在旺盛生长期呈现出显著优势,4种植被指数较自由放牧区显著增加,其余生长季均无明显差异。

关键词: 典型草原, 封育区, 自由放牧区, 反射光谱, 植被指数

Abstract: From July 2008 to May 2009,taking the Xilinguole typical steppe as experimental area of the observation,the spectral reflectance,aboveground biomass of the protected grassland and the free grassland were measured and analyzed.It was showed that enclosure improved grassland plant population structure significantly,increased the biomass of forage grasses.During vigorous growth period(July),enclosure had significant advantage in spectral reflectance characteristics,and could greatly improve the four vegetation indexes.The dead ripe period and the green up period had no obvious effects on spectral reflectance characteristics.

Key words: Typical steppe, Typical steppe, Protected grassland, Free grassland, Spectral reflectance, Vegetation index