Effects of Alpine Wetland Landscapes on Regional Climate on the Zoige Plateau of China
Effects of Alpine Wetland Landscapes on Regional Climate on the Zoige Plateau of China
复制标题
中国若尔盖高原高山湿地景观对区域气候的影响
DOI：
10.1155/2013/972430
复制
发表时间：
2013-01-01
影响因子：
2.9
通讯作者：
Ouyang, Hua
中科院分区：
文献类型：
--
作者：
Bai, Junhong;Lu, Qiongqiong;Ouyang, Hua
分析了湿地与非湿地在气温、降水、蒸发量、相对湿度等方面的差异，探讨了高寒湿地对区域气候的影响。同时，讨论了典型湿地退化前后降水和地表径流通量的变化，评价了湿地退化对土壤有机碳的影响。通过相关分析和回归分析，揭示了湿地景观面积与气象因子的关系。结果表明，湿地对周围环境的降温效果非常明显，周围湿地面积较小的地区土壤温度可能较高。湿地的蒸发量和相对湿度高于周围的非湿地。湿地退化严重，降水和地表径流流量减少，说明湿地退化或扩张与区域降水密切相关。一旦泥炭土转变为草甸土或风沙土，土壤有机碳(SOC)将呈线性下降。相关和回归分析表明，湿地景观面积与年平均气温、生长季平均气温、生长季蒸发量呈显著正相关。
The differences in the air temperature, precipitation, evaporation, and relative humidity between wetlands and nonwetlands were analyzed to investigate the effects of alpine wetlands on regional climate. Meanwhile, the changes in precipitation and surface runoff fluxes before and after the typical wetland degradation were discussed, and the effects of wetland degradation on soil organic carbon were assessed. Correlation and regression analyses were applied to exhibit the relationships between wetland landscape areas and meteorological factors. Our results showed that the cooling effects of wetlands on ambient environment were very obvious, and soil temperature could be higher in the area with less surrounding wetland area. The evaporation capacity and relative humidity in wetlands were higher compared to the surrounding non-wetlands. Precipitation and surface runoff flux decreased due to serious wetland degradation, indicating that wetland degradation or expansion had close relation with regional precipitation. Once peat soils were converted to meadow soils or Aeolian sandy soils, soil organic carbon (SOC) would decline linearly. Correlation and regression analyses showed that there were significant correlations between wetland landscape areas and the annual average air temperature, the average air temperature in growing seasons, and the evaporation in growing seasons ().