
Bulletin
wall bulletinMenu
Authors: 超级管理员 | Edit: xingqiang
Chapter 2 presents the same indicators—RAIN, TEMP, RADPAR, and BIOMSS—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 www.cropwatch.com.cn.
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.
RAIN Current (mm) | RAIN Departure from 15YA (%) | TEMP Current (°C) | TEMP Departure from 15YA (%) | RADPAR Current (MJ/m2) | RADPAR Departure from 15YA (%) | |
West Africa | 230 | 6 | 27.1 | -0.1 | 1167 | 0 |
South America | 775 | 8 | 23.6 | -0.7 | 1329 | 2 |
North America | 310 | 4 | 6.5 | 1.4 | 538 | -3 |
South and SE Asia | 234 | 12 | 22.8 | 0.1 | 969 | 0 |
Western Europe | 193 | -29 | 4.8 | -2.3 | 315 | -2 |
C. Europe and W. Russia | 220 | 9 | -2.0 | -1.7 | 225 | -6 |
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-January) for 2002-2016.
Table 2.2. October 2016 - January 2017 agronomic indicators by Major Production Zone, current season values and departure from 5YA
BIOMSS Current (gDM/m2) | BIOMSS (gDM/m2) Departure from 5YA (%) | Cropped arable land fraction Current | Cropped arable land fraction Departure from 5YA (%) | Maximum VCI Intensity Current | |
West Africa | 598 | 1 | 1 | 5 | 0.90 |
South America | 1835 | 4 | 1 | 0 | 0.66 |
North America | 813 | 12 | 1 | 11 | 0.92 |
South and SE Asia | 495 | 2 | 1 | -1 | 0.91 |
Western Europe | 752 | -20 | 1 | -2 | 0.81 |
C Europe and W Russia | 591 | -10 | 1 | 2 | 0.79 |
Note: Departures are expressed in relative terms (percentage) for all variables. 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 five-year (5YA) average for the same period (October-January) for 2012-2016.