Bulletin

CropWatch 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 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 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 (April to July 2019)

RAIN TEMP RADPAR
  Current (mm) Departure from 15YA (%) Current (°C) Departure from 15YA (°C) Current (MJ/m2) Departure from 15YA (%)
West Africa 548 -9 27.3 0.1 1196 1
North America 506 30 18.7 -0.7 1316 -2
South America 342 2 17.3 0.5 761 0
South and SE Asia 757 -16 29.2 0.5 1275 4
Western Europe 306 -11 14.6 0.0 1265 4
C. Europe and W. Russia 296 -8 14.9 0.2 1197 2

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 (April to July) for 2004-2018.

Table 2.2 Agronomic indicators by Major Production Zone, current season values and departure from average (April to July 2019)

  BIOMSS Cropped arable land fraction Maximum VCI 
  Current (gDM/m2) Departure from 15YA (%) Current (%) Departure from 5YA (%) Current
West Africa 759 2 89 -1 0.9
North America 644 -3 97 2 0.9
South America 316 1 98 1 0.8
South and SE Asia 734 6 69 -5 0.9
Western Europe 529 7 95 -1 0.9
C Europe and W Russia 515 3 98 0 0.9

Note: See note for Table 2.1, with reference value R defined as the fifteen-year average (15YA) for the same period (April to July) for 2004-2018 or five-year average (5YA) for the same period (April to July) for 2014-2018.