OALib Journal期刊
ISSN: 2333-9721
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气候变化情景下中国自然生态系统脆弱性研究
DOI: 10.11821/xb201305003, PP. 602-610
Keywords: 自然生态系统,脆弱性,区域气候情景,气候变化
Abstract:
本研究以动态植被模型LPJ为主要工具,以区域气候模式工具PRECIS产生的A2、B2和A1B情景气候数据为输入,模拟了未来气候变化下中国自然生态系统的变化状况,应用脆弱性评价模型,评估中国自然生态系统响应未来气候变化的脆弱性。结果表明未来气候变化情景下中国东部地区脆弱程度呈上升趋势,西部地区呈下降趋势,但总体上,中国自然生态系统的脆弱性格局没有大的变化,仍呈现西高东低、北高南低的特点。受气候变化影响严重的地区是东北和华北地区,而青藏高原区南部和西北干旱区受气候变化影响,脆弱程度明显减轻。气候变化情景下的近期气候变化对我国生态系统的影响不大,但中、远期气候变化对生态系统的负面影响较大,特别是在自然条件相对较好的东部地区,脆弱区面积增加较多。
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