Alpine cold vegetation response to climate change in the western Nyainqentanglha range in 1972-2009.
Alpine cold vegetation response to climate change in the western Nyainqentanglha range in 1972-2009.
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DOI：
10.1155/2014/514736
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发表时间：
2014
影响因子：
--
通讯作者：
Zhou AG
中科院分区：
文献类型：
--
作者：
Wang X;Sun Z;Zhou AG
长期遥感数据使我们能够监测这一地区的时空变化。利用遥感和GIS技术对念青唐格鲁西部地区的植被变化进行了研究。利用NDVI-SMA（光谱混合分析）方法反演植被覆盖度。1972-2009年，山区植被恢复明显，1972年9月30日、1991年9月14日和2009年8月30日的平均植被覆盖度分别为24.87%、35.89%和42.88%。1972-2009年植被覆盖度增加了18%。海拔4400 ~ 5200 m的bin植被覆盖度最高。这可能是山效应的结果。近40 a来，随着气候变化，高寒植被有增加和向高海拔扩展的趋势。这一变化似乎与过去40年生长季节每年平均气温升高0.05°C和每年降水增加1.83 mm有关。
The Tibetan Plateau is regarded as one of the most climatic-sensitive regions all over the world. Long-term remote sensing data enable us to monitor spatial-temporal change in this area. The vegetation changes of the western Nyainqentanglha region were detected by using RS and GIS techniques. And the vegetation coverage was derived by the NDVI-SMA (spectral mixture analysis) methods. An incensement of vegetation was observed in the mountain areas during 1972–2009 with a mean vegetation coverage of 24.87%, 35.89%, and 42.88% in 30/09/1972, 14/09/1991, and 30/08/2009, respectively. The vegetation fraction increased by 18% in the period of 1972–2009. The bin with the elevation between 4400 and 5200 m had the highest vegetation coverage. This may be the result of the mountain effect. Alpine vegetation had a trend to increase and expand to higher altitudes with the climate change in the past 40 years. The variation appears to be associated with an increase in mean temperature of 0.05°C per year and an increase in precipitation of 1.83 mm per year in the growing season of the past four decades. The results provide further evidence of alpine ecosystem change due to climate change in the central Tibetan Plateau.
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影响因子：
1.6
作者：
Becker, Alfred;Koerner, Christian;Tappeiner, Ulrike
通讯作者：
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青藏高原多年冻土融化对植被和土壤碳库损失的影响
影响因子：
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作者：
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通讯作者：
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影响因子：
2.2
作者：
Franklin, Rebecca S.
通讯作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
2.2
作者：
Gao, Qing-zhu;Wan, Yun-fan;Borjigidai, Almaz
通讯作者：
Borjigidai, Almaz