Bulletin

wall bulletin
OverviewCrop and environmental conditions in major production zones

Authors: 超级管理员 | Edit: zhaoxf

Chapter 2. Crop and environmental conditions in major production zones

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 (April to July 2020)


RAIN

TEMP

RADPAR

BIOMSS


Current (mm)

Departure
  (%)

Current
  (°C)

Departure
  (°C)

Current
  (MJ/m2)

Departure (%)

Current
  (gDM/m2)

Departure (%)

West Africa

485

-19

27.8

0.5

1205

1

767

3

North America

428

8

18.5

-0.7

1318

-2

645

-3

South America

280

-14

17

-1.2

810

-2

325

-6

S. and SE Asia

924

-1

28.3

-0.2

1252

1

746

7

Western Europe

322

-7

14.5

-0.1

1251

1

496

0

C. Europe and W. Russia

375

18

13.8

-0.9

1165

-2

473

-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 (April - July) for 2005-2019.

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


CALF (Cropped arable land fraction)

Maximum VCI


Current (%)

5A Departure (%)

Current

West Africa

89

-2

0.89

North America

95

0

0.90

South America

97

-1

0.86

S. and SE Asia

83

8

1.02

Western Europe

98

2

0.92

Central Europe and W Russia

98

0

0.92

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