摘要
根据遥感数据对昌图县植被覆盖进行解译,采用CASA模型以及多元统计方法对昌图县2000年~2010年的NPP值进行估算,并对其时空格局变化特征进行了分析。结果显示:昌图县植被的第一净初级生产力在研究的时间段内表现出降低的趋势。净初生产力较高的区域集中在昌图县的中、南、西、东部地势较高的山区。夏季的NPP均值最高。
Interpretation of vegetation coverage in Changtu County based on remote sensing data.The CASA model and multivariate statistical methods were used to estimate the NPP value of Changtu County from 2000 to 2010.At the same time,the characteristics of its temporal and spatial pattern changes are analyzed.The results showed that the first net primary productivity of vegetation in Changtu County showed a decreasing trend during the study period.Areas with higher net primary productivity are concentrated in the mountainous areas with higher terrain in the middle,south,west and east of Changtu County.The average NPP in summer is the highest.
作者
宁晓娜
Ning Xiaona(Liaoning River Reservoir Management Service Center,Liaoning Hydrological Bureau,Shenyang 110003,Liaoning)
出处
《陕西水利》
2020年第12期208-210,共3页
Shaanxi Water Resources
关键词
昌图县
NPP
植被覆盖
Changtu County
N PP
vegetation cover
