Bulletin

wall bulletin
OverviewCrop and environmental conditions in major production zones

Authors: 超级管理员 | Edit: Changsheng

Chapter 2 presents the same indicators—RAIN, TEMP, RADPAR, and BIOMSS— as those used in Chapter 1, and combines them with the agronomic indicators—cropped arable land fraction (CALF), maximum vegetation condition index (VCIx),  and minimum vegetation health index (VHIn)— to describe crop condition in six Major Production Zones (MPZ) across all continents. For more information about these zones and methodologies used, see the quick reference guide in Annex B as well as the CropWatch bulletin online resources at http://www.cropwatch.com.cn/htm/en/bullAction!showBulletin.action#.


2.1 Overview


Tables 2.1 and 2.2 present an overview of the agroclimatic (Table 2.1) and agronomic (Table 2.2) indicators for each of the six MPZs, comparing the indicators to their fifteen-year and five-year averages, respectively. The text mostly refers simply to "average" with the averaging period implied.


Table 2.1 Agroclimatic indicators by Major Production Zone, current value and departure from 15YA (January - April 2021)



RAINTEMPRADPARBIOMSS

CurrentDeparture from 15YA (%)CurrentDeparture from 15YA (°C)CurrentDeparture from 15YA (%)CurrentDeparture from 15YA (%)
 (mm)(°C)(MJ/m2)(gDM/m2)
West   Africa93-2827.30.01308-1400-20
North   America333-34.6-0.1742-31782
South   America418-5222.90.311580655-23
South   and SE Asia125-1123.70.212070356-19
Western   Europe296-84.5-0.36064134-6
C.   Europe and W. Russia28111-1.2-0.3456-781-7


Note: Departures are expressed in relative terms (percentage) for all variables, except for temperature, for which absolute departure in degrees Celsius is given. Zero means no change from the average value; relative departures are calculated as (C-R)/R*100, with C=current value and R=reference value, which is the fifteen-year average (15YA) for the same period (January-April) for 2006-2020.


Table2.2 Agronomic indicators by Major Production Zone, current season values and departure from 5YA (January - April 2021)



Cropped arable land   fractionMaximum VCI 

CurrentDeparture from 5YA (%)Current


West   Africa50-70.85
North   America44-30.76
South   America9900.92
South   and SE Asia8080.87
Western   Europe94-10.82
C Europe   and W Russia55-180.77


Note: See note for Table 2.1, with reference value R defined as the five-year average (5YA) for the same period (January-April) for 2016-2020.