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| 基于3S技术的甘肃省甘州区荒漠草地生产力评价 | |
| 引用本文： | 俞联平,李发弟,李新媛,程文定,陈兴荣,李昀.基于3S技术的甘肃省甘州区荒漠草地生产力评价[J].草原与草坪,2008(5). |
| 作者姓名： | 俞联平 李发弟 李新媛 程文定 陈兴荣 李昀 |
| 作者单位： | 1. 甘肃省草原技术推广总站,甘肃,兰州,730046;甘肃农业大学动物科学技术学院,甘肃,兰州,730070 2. 甘肃农业大学动物科学技术学院,甘肃,兰州,730070 3. 甘肃省草原技术推广总站,甘肃,兰州,730046 |
| 摘 要： | 以荒漠草地为主的甘州区天然草原为研究对象,利用3S技术一体化集成平台,进行了甘州区荒漠草地植被指数的选择及提取、草地植物量估产模型的构建及验证,并对甘州区天然草地生产力进行了评价。研究结果显示,修正土壤调整植被指数(MSAVI)对甘州区低盖度荒漠草原植被具有较好的指示作用,MSAVI与产草量之间存在显著正相关(相关系数r=0.803,P<0.01);经实际测产验证,以MSAVI为基础建立的甘州区草地植物量估产模型,估产值与实测产量之间的平均误差为9.08%,比较准确地反映了甘州区天然草地产草量;经估算,甘州区天然草原总鲜草产量46.01万t,总可食鲜草产量26.81万t,理论载畜量为5.76万羊单位。 |
| 关 键 词： | 甘州区 荒漠草地 3S技术 植被指数 植物量估产模型 |
RS,GIS and GPS based evaluation of desert grassland productivity in Ganzhou of Gansu Province |
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| YU Lian-ping,LI Fa-di,LI Xin-yuan,CHENG Wen-ding,CHEN Xing-rong,LI Yun.RS,GIS and GPS based evaluation of desert grassland productivity in Ganzhou of Gansu Province[J].Grassland and Turf,2008(5). | |
| Authors: | YU Lian-ping LI Fa-di LI Xin-yuan CHENG Wen-ding CHEN Xing-rong LI Yun |
| Institution: | 1.Gansu Grassland Technical Extension Station;Lanzhou 730046;China;2.College of Animal Science and Technology;Gansu Agricultural University;Lanzhou 730070;China |
| Abstract: | Based on RS,GIS and GPS,the vegetation index selection and abstracting,herbage yield estimating modeling and accuracy assessment were conducted,and the grassland productivity was evaluated in Ganzhou.The results showed that the MSAVI(Modified Soil Adjusted Vegetation Index)was better than NDVI(Normalized Difference Vegetation Index),and the fresh herbage yields was positively correlated to MSAVI(R=0.803,P<0.01).The accuracy assessment for productivity estimating model showed that the average error between e... |
| Keywords: | Ganzhou desert grassland 3S(RS GIS and GPS) technologies vegetation index herbage yields estimating model |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |