干旱区生态环境知识资源中心(Arid): 基于MODIS SWIR数据的干旱区草地地上生物量反演及时空变化研究

Arid

	基于MODIS SWIR数据的干旱区草地地上生物量反演及时空变化研究
其他题名	An Approach for Monitoring the Aboveground Biomass of Grassland in Arid Areas based on MODIS SWIR Bands
	于惠; 吴玉锋; 金毅; 张峰
来源期刊	遥感技术与应用
ISSN	1004-0323
出版年	2017
卷号	32 期号:3 页码:524-530
中文摘要	基于古浪县MODIS遥感资料和地面实测样方数据,筛选出干旱区草地地上生物量的敏感指数,构建了该区草地地上生物量反演模型,并对2000~2014年试验区草地产量的时空动态进行了分析。结果表明:基于NDTI指数的草地地上生物量反演模型预测精度较高,可用于大范围干旱区草地地上生物量的快速监测。2000~2014年古浪县生长季最大草地地上生物量空间分布差异明显,由南向北生物量逐渐降低。15a间温性草原化荒漠和温性荒漠地上生物量呈极显著增加趋势。各草地类型生物量峰值出现在7~8月份,不同草地类型间存在差异。研究结果可为干旱区草地资源和生态环境的动态监测和评价提供科学基础。
英文摘要	In this study,the sensitive index of grassland aboveground biomass in arid areas was selected by using ground measured samples data and MODIS remote sensing data in Gulang County,then a aboveground biomass inversion model was established and its accuracy was assessed.On that basis,the spatiotemporal dynamics of grassland aboveground biomass were analyzed in test area frm 2010to 2014.The results indicated that the prediction accuracy of inversion model based on NDTI was higher,and could be used as a fast monitoring technique for grassland biomass in arid areas in a wide range.The spatial distribution of maximum aboveground biomass of grassland during growing seasons was significant difference in Gulang County from 2000to 2014,the biomass gradually reduce from the south to the north.The aboveground biomass of temperate steppe desert and temperate desert was increased significantly in last 15 years.The peak of aboveground biomass for different grassland types appeared in July or August.This study can provide a scientific basis for the dynamic monitoring and evaluation of grassland resources and ecological environment in arid areas.
中文关键词	地上生物量 ; 短波红外 ; 反演模型 ; 干旱区
英文关键词	AGB SWIR Inversion model Arid area
语种	中文
国家	中国
收录类别	CSCD
WOS类目	REMOTE SENSING
WOS研究方向	Remote Sensing
CSCD记录号	CSCD:6011497
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236881
作者单位	甘肃省水土保持科学研究所, 兰州, 甘肃 730020, 中国
推荐引用方式 GB/T 7714	于惠,吴玉锋,金毅,等. 基于MODIS SWIR数据的干旱区草地地上生物量反演及时空变化研究[J],2017,32(3):524-530.
APA	于惠,吴玉锋,金毅,&张峰.(2017).基于MODIS SWIR数据的干旱区草地地上生物量反演及时空变化研究.遥感技术与应用,32(3),524-530.
MLA	于惠,et al."基于MODIS SWIR数据的干旱区草地地上生物量反演及时空变化研究".遥感技术与应用 32.3(2017):524-530.