生态学报2018，Vol.38Issue(4)：1264-1271,8.DOI:10.5846/stxb201701090067
青海省门源县1980-2015年青稞物候期变化趋势及其驱动因素
Analysis of highland barley phenophase change trend and the driving factors in Menyuan County, Qinghai Province during 1980-2015
摘要
Abstract
Highland barley phenophases and parallel temperature and precipitation data at the Menyuan Agricultural Meteorological Station,Qinghai Province,from 1980 to 2015,were used to analyze the change trend of highland barley phenology and its driving factors under a climate change background in Menyuan County,Qinghai Province.The results indicated that the sowing,seedling,and jointing stage tended to be delayed,whereas the phenological period overall was advanced.Sowing stage was significantly delayed by 2.65d/10a,and the tillering and heading stage were advanced by 4.78d/10a and 2.30d/10a,respectively.The climatic factors that significantly affected the phenological periods of highland barley were temperature,precipitation,and accumulated temperature.When 0℃ accumulated temperature before sowing increased by 1℃ and precipitation increased by 1mm,sowing was delayed by 0.252d.When stable accumulated temperature increased by 1 ℃,the tillering stage was advanced by 0.026d,and when minimum temperature in April increased by 1℃,the heading stage advanced by 1.890d.Since the 1990s,the sowing stage delayed,the tillering stage and heading stage advanced,and the driving factors increased.The phenological period and the driving factors began to change at the same time,which indicated that the plateau of climate warming in Qinghai was the dominant factor determining the phenological changes of highland barley.关键词
青海省门源县/春青稞/物候期变化/驱动因素Key words
Menyuan County, Qinghai Province/spring highland barley/phenophases change/driving factors引用本文复制引用
严应存,赵全宁,王喆,豆青芳..青海省门源县1980-2015年青稞物候期变化趋势及其驱动因素[J].生态学报,2018,38(4):1264-1271,8.基金项目
青海防灾减灾重点实验室项目(2017-ZJ-Y28) （2017-ZJ-Y28）
青海省气象局重点项目 （）
青海省科技厅重点项目(2017-SF-131) （2017-SF-131）
