GB/T 34817-2017 in English

VALID

Warning grade of agricultural drought

Issued on:2017-11-01
Implemented on:2018-05-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $100.00
$97.00

Standard No:	GB/T 34817-2017
Document status:	VALID
Title in English:	Warning grade of agricultural drought
Title in Chinese:	农业干旱预警等级
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2017-11-01
Implemented on:	2018-05-01
ICS Classification:	07.060-Geology. Meteorology. Hydrology
Chinese Classification:	B18-Agricultural meteorology
Professional Classification:	GB-National Standard
Related Keywords:	agricultural drought warning level background 32136-2015 agricultural drought grade standard standard formulation agricultural drought drought grade agricultural drought introduction national standard
Related Topics:	drought GB/T 34817-2017 early warning Standard warning Interfering with Law Enforcement agricultural drought intervention device Haze warning level inherent intervention agricultural standards alert level alert level Early Warning Peanuts GBT34817 GB/T 34817-2017 Industrial equipment warning level Missile warning major

《GB/T 34817-2017农业干旱预警等级》由TC539（全国农业气象标准化技术委员会）归口，主管部门为中国气象局。

Introduction

National Standard of the People's Republic of China GB/T 34817—2017 Agricultural Drought Warning Level

Background of Standard Formulation

Agricultural drought is one of the main meteorological disasters affecting agricultural production in my country. In recent years, the frequent occurrence of extreme weather events has led to a significant increase in the frequency and intensity of droughts, seriously threatening national food security. In order to scientifically respond to drought disasters and standardize the early warning process, this standard came into being.

Standard dimensions	Basis for drought grade classification	Monitoring indicators
Level I (Extreme Drought)	The affected area of two or more adjacent provincial administrative regions accounts for ≥20%, and the affected area is ≥12 million mu	Farmland water supply and demand balance index[AWDI]
Level II (Severe Drought)	The affected area of two or more adjacent provincial administrative regions accounts for 15%-20%, and the affected area is 9 million mu-12 million mu	Relative soil humidity[SRH]
Level III (moderate drought)	The affected area of two or more adjacent provincial administrative regions accounts for 10%-15%, and the affected area is 6 million mu-9 million mu	Evapotranspiration[ET]

Technical Evolution Analysis

Based on the GB/T 32136-2015 Agricultural Drought Grade standard, this standard optimizes the drought warning grade classification:

Introducing the Agricultural Water Supply and Demand Balance Index Model (AWDI) as the core evaluation indicator
Refining the thresholds of the affected area and impact range at different levels
Increasing the cross-regional coordinated early warning mechanism

Actual application case

Take the regional drought encountered in a certain province in 2019 as an example:

The affected area reached 8 million mu, accounting for 18% of the total cultivated land in the province
According to the standard classification, it belongs to Level II (severe drought)
Government departments quickly launched emergency response measures, including artificial rainfall operations and drought-resistant water source scheduling

Standard framework comparison table (3+ dimensions)

Dimensions	Level I (Extreme Drought)	Level II (Severe Drought)	Level III (Moderate Drought)
Area ratio of disaster-affected areas	≥20%	15%-20%	10%-15%
Area range of disaster-affected areas (ten thousand mu)	≥1200	900-1200	600-900
Level of impact	National-level warning	Provincial-level warning	Municipal-level warning

Implementation suggestions

Strengthen the construction of regional coordination and linkage mechanism to ensure information sharing and rapid response
Establish>Agricultural drought monitoring and early warning system, to achieve dynamic monitoring and real-time assessment
Develop differentiated response measures for different levels of drought

More samples: QC/T 942-2021 JGJ 94-2008 DL/T 368-2010

Sample only — not a preview of GB/T 34817-2017