Analysis on Growth Characteristics of LyciumBarbarum in Qaidam Basin from 2002 to 2015

Abstract

Lyciumbarbarum is a kind of shrub which can endure barren and drought. Its remote sensing image texture characteristics are significantly different from that of grain crops. This paper uses the maximum NDVI of MODIS images of the main Lyciumbarbarum production areas in the Qaidam Basin from 2002 to 2015 to analyze the dynamic change characteristics of the planting area of Lyciumbarbarum. The main conclusions are as follows: 1) From 2002 to 2015, the maximum NDVI of Lyciumbarbarum decreased in 2008 in the main production areas of Qaidam Basin and began to stabilize in 2010; 2) The vegetation NDVI in the main production areas of Lyciumbarbarum decreased sharply in 2008, mainly because the coverage of growing crops in the growing season was significantly greater than that of Lyciumbarbarum; 3) The Lyciumbarbarum planting in the western basin was later. Planting generally started after 2011; 4) The annual average wind speed reduction trend in the Lyciumbarbarum planting area in the past 55 years is generally greater than that in the non-Lyciumbarbarum planting area, the wind speed reduction trend in the Lyciumbarbarum planting area is more significant since 2000.