YANG Yue,WEN Jun,LU Xuancheng,et al.The Change of the Zoige Alpine Wetland and its Responses to Climate Change in the Past 30 Years[J].Journal of Chengdu University of Information Technology,2021,36(01):73-79.[doi:10.16836/j.cnki.jcuit.2021.01.012]
近30年来若尔盖高寒湿地变化及其对区域气候变化的响应
- Title:
- The Change of the Zoige Alpine Wetland and its Responses to Climate Change in the Past 30 Years
- 文章编号:
- 2096-1618(2021)01-0073-07
- 分类号:
- P461
- 文献标志码:
- A
- 摘要:
- 为探究近30年来气候变化对若尔盖高寒湿地面积的影响,利用1987-2016年的5期陆地资源卫星主题绘图仪及陆地资源卫星陆地成像仪观测数据,使用决策树分类的方法提取若尔盖高寒湿地的湿地面积并分析其变化特征; 利用1984-2016年若尔盖、玛曲、红原、阿坝4个气象台站观测数据分析若尔盖区域气候变化特征,探讨湿地面积与气候因子间的相关性。结果表明:1987-2016年,若尔盖高寒湿地呈现板块化,总面积减少约902.16 km2; 1984-2016年,若尔盖高寒湿地区域气候有显著的变暖趋势(0.64 ℃/10 a)。气温与湿地面积的相关性最高,其次是降水和相对湿度,表明气温是影响若尔盖高寒湿地面积变化的主导气候因子。
- Abstract:
- In order to analyze the impact of climate change on the area of the Zoige Alpine wetland in the past 30 years, based on the observation data of Landsat/TM and /Landsat OLI from 1987 to 2016, wetland area of the Zoige alpine wetland was extracted by using the decision tree classification method, and further analyze has been conducted. The climate change characteristics of Zoige area were analyzed by using meteorological data between 1984 and 2016 which is from the four weather stations of Zoige, Maqu, Hongyuan and Aba, the correlation between wetland area and different meteorological elements were explored. The results show that: the Zoige alpine wetland presents modularization, the total area of the Zoige alpine wetland decreased by 902.16km2 from 1987 to 2016; the climate of the Zoige alpine wetland area has a obvious trend of getting warmer with 0.64 ℃ per 10a from 1984-2016. The correlation between temperature and wetland area turned to be the highest,followed by precipitation and relative humidity,which suggests that the dominant climate factor affecting the area change of the Zoige alpine wetland was temperature.
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备注/Memo
收稿日期:2020-02-22
基金项目:国家自然科学基金资助项目(41971308、41530529)