• 研究报告 •

民勤荒漠区16种植物物候持续日数及其积温变化

1. 1甘肃民勤荒漠草地生态系统国家野外科学观测研究站,甘肃民勤733300;2甘肃省荒漠化防治重点实验室,兰州730070;3甘肃省治沙研究所,兰州730070
• 出版日期:2010-02-10 发布日期:2010-02-10

Changes in duration days and accumulated temperature of 16 plant species phenology in Minqin desert area.

Chang-Zhao-Feng1,2,3 ;Fu-Gui1,2,3;ZHONG Sheng-Nian1,2,3

1. 1Minqin National Station for Desert Steppe Ecosystem Studies' Minqin 733300' Gansu' China;2Gasu Key Laboratory of Desertification Combating' Lanzhou 730070' China;3Gansu Desert Control Research Institute, Lanzhou 730070, China
• Online:2010-02-10 Published:2010-02-10

Abstract: With climate warming, the plant phenology in Northwest China desert area has an advancing trend. Based on  34year phenological observation data of 16 plant species in the Minqin desert area of Gansu, and by using one linear trend equation,  this paper analyzed the changes in the duration days of the phenology of these plant species and in the accumulated temperature in the phenological duration. With the increase of air temperature , there was an increasing trend in the duration days of the phenology. The accumulated temperature in the duration of the phenology increased significantly, and spring and autumn were the more sensitive seasons in the changes of the accumulated temperature. The increase or decrease of the accumulated temperature was mainly caused by the increase or decrease of the duration days of phenology, followed by the increase of air temperature, which suggested that the duration days of the phenology of plant species could not be shortened or extended indefinitely with the increase or decrease of air temperature.