Environmental change in and around the Okavango Delta during the nineteenth and twentieth centuries

Hamisai Hamandawana; Raban Chanda

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Environmental change in and around the Okavango Delta during the nineteenth and twentieth centuries

机译：19世纪和20世纪，奥卡万戈三角洲及其周围地区的环境变化

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Historical data, archival information, in-situ observations and multi-date remotely sensed imagery comprising CORONA photographs of 1967, aerial photographs of 1991 and 2000, and Landsat TM and Landsat ETM images of 1989 and 1994 and 2001, respectively, were used to reconstruct environmental changes in and around the Okavango Delta during the nineteenth and twentieth centuries. The major changes that emerged from this reconstruction include persistent flood and rainfall failures, sustained contraction of surface and groundwater resources, floodplain desiccation, significant expansion of woody cover and significant decrease in grazing resources. These changes require urgent formulation and immediate adoption of climate smart interventions that can enhance our capacities to cope with the adverse effects deteriorating climatic conditions.

机译：历史数据，档案信息，原位观测和多日期遥感图像，包括1967年的CORONA照片，1991年和2000年的航空照片，以及1989年和1994年和2001年的Landsat TM和Landsat ETM图像，均用于重建。 19世纪和20世纪，奥卡万戈三角洲及其周围地区的环境变化。这次重建产生的主要变化包括持续的洪水和降雨失灵，地表和地下水资源的持续收缩，平原漫滩的干燥，木本植物覆盖的显着扩大以及放牧资源的显着减少。这些变化需要紧急制定并立即采用气候智能干预措施，以增强我们应对气候条件恶化的不利影响的能力。

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来源
《Regional Environmental Change》 |2013年第3期|681-694|共14页
作者
Hamisai Hamandawana; Raban Chanda;
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作者单位

Department of GIS & Remote Sensing, University of Fort Hare, P/B X 1314, 5700 Alice, Eastern Cape, South Africa;

Department of Environmental Science, University of Botswana, P. Bag, UB 00704, Gaborone, Botswana;

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正文语种 eng
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关键词
Climate change; Drying sequences Woody cover; Human agency;

机译：气候变化;干燥顺序木质覆盖物;人力资源中介;

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Environmental change in and around the Okavango Delta during the nineteenth and twentieth centuries

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