摘要
本研究以克孜勒苏柯尔克孜自治州的天然草地为研究对象,利用2005年7-8月的MODIS遥感数据提取植被指数(NDVI),通过典型区野外实地采样,得到与MODIS影像资料时相一致的草地地上生物量数据,分析遥感植被指数与植被生物量的相关关系,建立了生物量估测模型,并进一步对克州天然草地生产力进行了评价。根据关键场理论计算了克州地区理论载畜量以及关键场载畜量。结果表明,克州地区的实际载畜量为263.19万羊单位,理论载畜量为177.61万羊单位,超载率为48.18%,关键场载畜量为113.71万羊单位,克州实际超载率为131.45%,远远高于理论超载率。
The grassland vegetation index （NDVI） were selected to establish the model of estimation biomass in the Kizilsu Kirgiz Autonomous Prefecture by combing the MODIS data in July and August 2005 and the field biomass at the same time. This study established the estimating model of grassland yield through and the precision of the estimating model was good. The theoretical and Key Pasture carrying capacity were calculated by Key Pasg capacity of Kizilsu Kirgiz Autonomous Prefecture were 1 776 100 and 1 137 100 sheepture Theory. The result of this study showed that the theoretical and Key Pasture carryin units, the overgrazing rates were 48.18% and 131.45% respectively when compared with the actual carrying capacity of 2 631 900 sheep units.
出处
《草业科学》
CAS
CSCD
北大核心
2011年第1期53-58,共6页
Pratacultural Science
基金
国家科技支撑计划子课题"塔里木盆地西南缘山区退化草场修复技术集成示范"(2009BAC54B03)
新疆畜牧科学院青年基金(2008QJ06)
关键词
草地生产力
监测模型
载畜量
关键场
grassland productivity
estimation model
carrying capacity
key pasture
