College of Resources and Environment, Lanzhou University, Lanzhou 730000, People's Republic of China.
Environ Monit Assess. 2011 Sep;180(1-4):189-99. doi: 10.1007/s10661-010-1781-0. Epub 2010 Dec 9.
Spatiotemporal shifts in the extent and distribution of alpine wetland ecosystems in China's Qinghai-Tibet plateau were investigated for the period 1967-2004. Using aerial photographs for 1967, and satellite remote sensing data for 1986, 2000, and 2004/5, the main components and distribution of alpine wetland ecosystems in the headwaters regions of the Yangtze and Yellow Rivers, as well as those of the nearby Zoige region, were analyzed. Widespread degradation of the Qinghai-Tibet plateau's alpine wetlands occurred between 1967 and 2004, with over 10% of their area being lost. The greatest such degradation occurred in the headwaters region of Yangtze River, where wetland areas shrank by 29%, and the area of dried-up lakes rose by 17.5%. In the Yellow River's headwaters region as well as the Zoige region, wetland ecosystems clearly underwent accelerated fragmentation and isolation in their spatial distribution. The wetlands' degradation was closely correlated to the rise in air temperature, which from 1982-2004 was over 2-fold faster that from 1965-1982.
研究了 1967 年至 2004 年间中国青藏高原高寒湿地生态系统的范围和分布的时空变化。利用 1967 年的航空照片和 1986 年、2000 年和 2004/5 年的卫星遥感数据，分析了长江和黄河河源地区以及附近若尔盖地区高寒湿地生态系统的主要组成部分和分布情况。1967 年至 2004 年，青藏高原高寒湿地广泛退化，面积减少了 10%以上。退化最严重的是长江河源区，湿地面积减少了 29%，干涸湖泊面积增加了 17.5%。在黄河河源区和若尔盖地区，湿地生态系统的空间分布明显加速破碎和隔离。湿地退化与气温升高密切相关，1982 年至 2004 年的升温速度是 1965 年至 1982 年的两倍多。
