Bulletin

wall bulletin
OverviewCrop and environmental conditions in major production zones

Authors: 超级管理员 | Edit: mazh

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 2023)


RAINTEMPRADPARBIOMSS

CurrentDeparture  (%)CurrentDeparture(°C)CurrentDeparture  (%)CurrentDeparture (%)
 (mm)(°C)(MJ/m2)(gDM/m2)
West   Africa107-1726.9-0.31305-1568-8
North   America36345.81.3723-54933
South   America372-5623.91.31149-1894-22
South and   SE Asia107-2423.50.112151548-3
Western   Europe303-55.50.7564-4504-4
C. Europe   and W. Russia26851.01.8443-940610

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 2008-2022.


Table2.2 Agronomic indicators by Major Production Zone, current season values and departure from 5YA (January - April 2023)



Cropped arable land   fractionMaximum VCI 

Current (%)Departure  (%)Current
West   Africa54-10.85
North   America38-100.71
South   America9900.87
South and   SE Asia8120.82
Western   Europe93-20.87
C Europe   and W Russia6830.87

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 2018-2022.