摘要
以云南省大理白族自治州为例,利用MODIS遥感数据,通过气候变化影响生态系统的时空差异,揭示气候变化对洱海流域生态质量的影响。结果表明:在2000—2020年间,洱海流域年平均气温呈显著上升趋势(P<0.01),且增温速率具有显著的空间差异性;年降水量呈显著下降趋势(P<0.05),且下降速率具有显著的空间差异性;年平均气温与年降水量的变化趋势相反,且年际变化具有显著的时间差异性。在未来气候变化下,洱海流域生态质量将持续下降,未来需重点关注降水对洱海流域生态系统的影响。
Taking Dali Bai Autonomous Prefecture in Yunnan Province as an example,this study used MODIS remote sensing data to reveal the impact of climate change on the ecological quality of Erhai Basin through the spatial and temporal differences of climate change affecting ecosystem.The results showed that during 2000-2020,the annual average temperature in Erhai Basin showed an obvious upward trend(P<0.01),and the warming rate showed significant spatial differences.The annual precipitation showed a significant downward trend(P<0.05),and the decline rate showed significant spatial differences.The annual average temperature is opposite to the change trend of annual precipitation,and the inter-annual changes showed significant temporal differences.Under future climate change,the ecological quality of Erhai Basin will continue to decline.In the future,more attention should be paid to the impact of precipitation on the ecological system of Erhai Basin.
作者
杨昆榆
YANG Kunyu(Kunming Forestry Design Institute,Kunming 650031,China)
出处
《黑龙江环境通报》
2023年第6期40-42,共3页
Heilongjiang Environmental Journal
关键词
气候变化
云南洱海流域
生态质量
影响
climate change
Erhai basin in Yunnan
ecological quality
impact
