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Authors: 超级管理员 | Edit: zhuliang
This reporting period covers the growth and maturity stages of summer crops, including late rice, semi-late rice, and maize. Their harvest was followed by the sowing of winter wheat in some fields. Overall, crop conditions were below the 5-year average because of drought.
During this reporting period, the region experienced severe heat and drought events. Agroclimatic indicators showed that RAIN in the region was only 635 mm, 28% lower than the 15-year average, while TEMP was 19.8℃, 1.1℃ higher than the 15-year average, and similarly, RADPAR was substantially higher (+12%). The high temperature and drought seriously affected the growth of crops, and BIOMSS was 8% lower than the average. The VCIx(0.93) was lower than the same period of previous years. However, comparing the optimal vegetation condition index map with the potential biomass map, the agricultural drought in the region where severe meteorological drought occurred was not very severe, indicating that irrigation measures in the area played an important role.
According to the NDVI departure clustering map and the profiles, the crop conditions in the region were far below average. Crop conditions in the southern part of the region have been slowly picking up since September. Sharp fluctuations were observed in most of the region from September onward, and the degree of fluctuation exceeded the effects that could be caused by vegetation growth, presumably due to data quality issues.
Despite the adverse climatic conditions, the arable land utilization in the district remained good. CALF is 100% and CI is 144%, which is 18.0% higher than the same period in previous years, indicating that the cropland in the area was very well utilized.
Figure 4.16 Crop condition China Southwest region, July-October 2022
(a) Crop condition development graph based on NDVI
(b) Crop condition development graph based on NDVI (c) NDVI profiles
(d) Maximum VCI
(e) Potential biomass departure from 15YA
(f) Time series rainfall profile
(g) Time series temperature profile