摘要
以锡林郭勒盟典型草原为研究区域,将遥感技术用于草地牧草产量测量,分析了遥感植被指数与牧草产量之间的相关关系,比较和分析了3种植被指数的应用范围,研究了草地牧草产量遥感监测的方法,并利用遥感植被指数建立了草地牧草产量估产模型y=368.273x+2.973(R=0.908,R2=0.824),该模型通过2005年预测值与实测值的误差统计分析,2005年估产精度达到97%,研究还表明,锡林郭勒草地牧草产量估产的植被指数是归一化植被指数(NDVI)。研究结果为今后开展大面积草地牧草产量估产和动态监测提供了有效途径。
The remote sensing technique was used to measure biomass in Xilinguole League. The correlation between the vegetation indices and biomass was analyzed. Application range of three types of vegetation indices and biomass monitoring by remote sensing were discussed. Results indicated that the suitable vegetation index and linear regression model for Xilinguole region were NDVI and y= 368. 273x;2. 973（R=0. 908,R2=0. 824）, respectively. The model was used for statistic of 2005 data, which showed 97; accuracy and thus provide an effective way for large scale grassland biomass estimation and monitoring.
出处
《草业科学》
CAS
CSCD
2008年第4期31-36,共6页
Pratacultural Science
关键词
遥感
植被指数
草地
牧草产量
估产模型
锡林郭勒盟
remote sensing
vegetation index
grassland
forage biomass
yield estimation model
Xilinguole
