Bulletin

wall bulletin
Loess regionChina

Authors: 超级管理员 | Edit: zhuliang

During the reporting period, maize was harvested in late September and early October, and then the sowing of winter wheat was completed.

The CropWatch Agro-climatic Indicators (CWAIs) of the Loess Region show that the rainfall was below average (-10%), temperature was 1℃ higher, and radiation was above average by 3%. The combined effect resulted in potential biomass that was 4% below the average compared to the 15YA.

According to the regional NDVI development graph, the crop conditions in the Loess region hovered around the 5YA during the monitoring period except for late August and late September. The NDVI departure cluster profiles indicate that about 37.9% of the crop conditions were below the average throughout the entire monitoring period, mainly in the western and southern Loess Region. Crop conditions in other areas were close to average during the monitoring period. It is noteworthy that crop condition was in general above average during peak growing season. VCIx for the region was 0.93, indicating favorable crop condition during the monitoring period. The fraction of cropped arable land (CALF) in the whole region is as high as 97%, which is comparable to the average.

All in all,  the crop conditions in the Loess region were at the average.


Figure.a Crop condition development graph based on NDVI

Figure.b Spatial distribution of NDVI profiles

Figure.c Time series rainfall profile

Figure.d Time series temperature profile

Figure.e Maximum VCI

Figure.f Potential biomass departure from 5YA

Figure.g Proportion of NDVI anomaly categories

Figure.h Proportion of VHIm categories


codenameRAIN Current (mm)RAIN 15YA Departure (%)TEMP Current (°C)TEMP 15YA Departure (°C)RADPAR Current (MJ/m2)RADPAR 15YA Departure (%)BIOMSS Current (gDM/m2)BIOMSS 15YA Departure (%)CALFCALF departureVCL
C36Loess region342-1017.6111113784-49700.93