Historical landscape change in northwestern Yunnan, China - Using repeat photography to assess the perceptions and realities of biodiversity loss
Historical landscape change in northwestern Yunnan, China - Using repeat photography to assess the perceptions and realities of biodiversity loss
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DOI：
10.1659/0276-4741(2006)26
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发表时间：
2006-08-01
影响因子：
1.6
通讯作者：
Moseley, Robert K.
中科院分区：
文献类型：
--
作者：
Moseley, Robert K.
生物多样性保护计划依赖于对过去生态变化速度和人类使用模式的准确了解。在世界偏远地区，很少有历史趋势的经验数据为保护规划提供信息。云南山区的情况就是如此，那里对环境变化的历史驱动因素有很多看法，但几乎没有直接证据。自2001年以来，大自然保护协会采用重复摄影的方法来制作云南西北部的历史概况。这100年的概况使我们能够评估对生物多样性的威胁的真实程度以及土著文化对维护生物多样性的长期贡献。我们发现，许多假设，往往是事实，是错误的或不适用于普遍。森林覆盖丧失的规模和驱动因素、灌木林动态、农田扩张和冰川退缩都属于这一类。我们还发现，一些威胁被忽视了，比如迅速变暖的气候。重复照片提供的景观变化的直接证据有一系列的保护政策，投资和管理的影响。
Biodiversity conservation programs rely on accurate knowledge about past rates of ecological change and patterns of human use. In remote areas of the world, empirical data on historical trends rarely exist to inform conservation planning. Such is the case in the mountains of Yunnan, where there are many perceptions about historical drivers of environmental change, but little direct evidence. Since 2001, The Nature Conservancy has employed repeat photography to develop a historical profile for northwestern Yunnan. This 100-year profile allows us to assess the true magnitude of threats to biodiversity and the long-term contributions made by indigenous cultures to biodiversity maintenance. We found that many assumptions, often stated as fact, are wrong or do not apply universally. The magnitude and drivers of forest cover loss, and shrubland dynamics, crop field expansion, and glacier retreat fall into this group. We also found that some threats have been ignored, such as a rapidly warming climate. The direct evidence of landscape change provided by repeat photographs has a range of conservation policy, investment, and management implications.