摘要
利用EOS/M0DIS卫星遥感数据,以2005、2006年4-10月的NDVI月度变化和野外实测样方数据为例,分析了巴里坤草场高寒草原类、温性草原类、温性草原化荒漠类、温性荒漠草原类和低平地草甸类等5种草地类型的植被指数(NDVI)在各个生长阶段的变化。结果表明,5种草地类型在生长季(4-10月)的NDVI数值由大到小依次为:低平地草甸、高寒草原、温性草原、温性草原化荒漠和温性荒漠草原;低平地草甸、高寒草原、温性草原和温性荒漠草原的全年最大值出现在7月,温性草原化荒漠年最大值出现时间不稳定。
Taking monthly change from April to October in 2005 and 2006 as the example,the NDVI(Normalized Difference Vegetation Index) for five typical grasslands of alpine steppe,temperate meadow,temperate steppe-desert,temperate desert-steppe and low-land meadow were analyzed in growth stages by using of remote sensing data of MODIS,which reflected its growth status and characteristics.The results showed that the NDVI values of the five typical grasslands from max to min were: low-land meadow,alpine steppe,temperate meadow,temperate steppe-desert,temperate desert-steppe.The date of the maximum NDVI for low-land meadow,alpine steppe,temperate meadow,temperate desert-steppe and low-land meadow were all existed in July,the date of the maximum NDVI for temperate steppe-desert was unsteadiness.
出处
《中国农业气象》
CSCD
2009年第S1期144-147,共4页
Chinese Journal of Agrometeorology
基金
国家“十一五”科技支撑计划课题“现代农村信息化关键技术研究与示范”第15专题“农村特色产业信息化技术研究”(2006BAD10A15)
中国沙漠气象科学研究基金项目(Sqj2006009)
