在中国不同生态地区的空间时间差异化和关键气候变量的演变趋势
Yong Zhong1,2,3, Lei Gao2, Xin-Hua Peng4
1Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin 541006, Guangxi, China.
概括
中国中国中国中国.
科学领域:
- 气候学和环境科学 气候学和环境科学
- 全球变化研究研究
- 区域气候动态 区域气候动态
背景情况:
- 全球气候变化需要了解区域气候趋势.
- 对中国多样化的生态区气候参数动态的全面评估是有限的.
- 长期气候数据分析对于评估环境变化至关重要.
研究的目的:
- 分析中国基本气候参数的时空模式和趋势.
- 评估四个不同的生态区域的气候变化.
- 为了确定总体气候趋势,如变暖和干燥/湿.
主要方法:
- 利用来自中国各地1525个车站的数据 (1961-2021).
- 采用了Theil-Sen斜率,曼-肯德尔趋势测试和空间分析.
- 分析了降水量,空气温度,相对湿度,蒸汽压力赤字,净辐射和潜在的蒸发透气.
主要成果:
- 气候变量的空间异质性超过了时间变化.
- 在所有地区,空气温度都显著上升.
- 相对湿度下降,蒸汽压力逆差增加,表明某些地区的变暖和干燥趋势.
- 降水量仅在青海西藏高原地区 (第四区域) 显著增加.
- 净辐射总体上下降了,潜在的蒸发转化显示出混合的趋势 (I区域下降,IV区域增加).
结论:
- 中国在气候趋势上表现出显著的区域差异.
- 在所有生态区域都明显出现了普遍的变暖趋势.
- 青海-西藏高原 (第四区域) 显示出显著的变暖和湿趋势.
- 其他地区表现出复杂的变暖,干旱和潮湿趋势混合,突出显示全球变化的细微影响.
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