Bulletin

wall bulletin
OverviewCrop and environmental conditions in major production zones

Authors: 超级管理员 | Edit: zhaoxf

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 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 and five-year averages, respectively. The text mostly refers simply to "average" with the averaging period implied.

Table 2.1. January-April 2019 agroclimatic indicators by Major Production Zone, current value and departure from 15YA

  RAIN TEMP RADPAR
Current Departure from 15YA (%) Current Departure from 15YA (°C) Current Departure from 15YA (%)
 (mm) (°C) (MJ/m2)
West Africa 192 1 28.7 -0.4 1317 0
North America 357 15 3.8 -1.1 730 -5
South America 676 2 24.0 -0.3 1184 1
South and SE Asia 124 -3 24.7 0.0 1214 1
Western Europe 196 -9 6.3 0.3 608 5
C. Europe and W. Russia 238 -2 0.6 1.5 483 -1

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 2004-2018.

Table 2.2.  January-April 2019 agronomic indicators by Major Production Zone, current season values and departure from 15YA/5YA

  BIOMSS Cropped arable land fraction Maximum VCI 
Current Departure from 15YA (%) Current (%) Departure from 5YA (%) Current
(gDM/m2)    
West Africa 602 0 53 -2 0.89
North America 753 -2 42 -2 0.86
South America 1713 2 99 0 0.85
South and SE Asia 415 6 72 -1 0.87
Western Europe 740 -6 94 -1 0.91
C Europe and W Russia 680 6 51 -20 0.75
Note: See note for Table 2.1, with reference value R defined as the fifteen-year average (15YA) for the same period (January-April) for 2004-2018 or five-year average (5YA) for the same period (January-April) for 2014-2018.