Bulletin

wall bulletin
OverviewCrop and environmental conditions in major production zones

Authors: 超级管理员 | Edit: gaoww

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), minimum vegetation health index (VHIn) and cropping intensity index (CI)— 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 C 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 or 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 (October 2019 to January 2020)

  RAIN TEMP RADPAR BIOMSS
Current Departure from 15YA (%) Current Departure from 15YA (°C) Current Departure from 15YA (%) Current Departure from 15YA (%)
 (mm) (°C) (MJ/m2) (gDM/m2)
West Africa 288 41 24.9 -0.3 1221 -1 407 -11
North America 379 24 5.2 -0.2 508 -5 121 -5
South America 781 -2 22.9 0.2 1371 2 833 0
South and SE Asia 312 14 20.6 -0.1 1007 -2 428 16
Western Europe 412 20 6.4 0.9 291 -5 73 -7
C. Europe and W. Russia 220 -16 2.5 2.7 232 2 51 17

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 (October to January) for 2005-2019.

Table 2.2 Agronomic indicators by Major Production Zone, current season values and departure from 5YA (October 2019 to January 2020)

  Cropped arable land fraction Maximum VCI 
Current Departure from 5YA (%) Current
   
West Africa 96 2 0.98
North America 76 13 0.93
South America 98 0 0.74
South and SE Asia 98 4 1.02
Western Europe 93 3 0.94
C Europe and W Russia 79 16 0.92

Note: See note for Table 2.1, with reference value R defined as the five-year average (5YA) for the same period (October to January) for 2015-2019.