宁夏沙坡头自然保护区气候变化脆弱性评价

Climate change vulnerability assessment of Shapotou nature reserve in Ningxia

随着西部地区的人口增长、产业结构的改变,在全球气候变化背景下,结合其特殊的地理位置,宁夏沙坡头地区的生态脆弱性问题愈发受到重视。本研究从风险度和敏感度方面着手,选取干燥度、热量、道路分布、建筑用地分布、植被覆盖度、物种多样性、生态系统类型以及生态系统多样性八个空间属性较强的生态脆弱性指标,对沙坡头地区进行脆弱性评价研究,拟得出沙坡头地区脆弱性空间分布特点并解释差异产生的原因。研究结果表明,气候变化对宁夏沙坡头地区生态系统的影响评价模型,能够客观、准确、科学的评价气候变化对沙坡头自然保护区影响的范围和程度,同时为应对全球气候变化,缓解、适应气候变暖对沙漠生态系统的影响,以及为西部地区自然保护区建立和维护提供科学依据、技术支撑和示范作用。从而为因地制宜,更有效率的保护地区的自然生态环境与生物多样性。

The vulnerability of the ecological environment,is directly related to the environment in the biological survival,affects human survival,development in the region. Along with the western region ' s population growth,industrial structure change,climate change in the background,with its special geographical position,ecological Ningxia Shapotou area of vulnerability is paid more attention. This study from the risk and sensitivity selected ecological vulnerability index factors including dryness,heat distribution,road,building land distribution,vegetation coverage,species diversity,ecosystem types and ecosystem diversity,to evaluate vulnerability in the Shapotou area,and tried to find spatial features of vulnerability and the reasons for dry warming trend next,make division of the vulnerability of the differences of space distribution characteristics. Findings show that the model of climate change impacts on ecosystems in Ningxia Shapotou area can obiectively,accurately and scientifically assess bow climate change affects dry warming nature reserve of Shapotou,and at the same time can deal with the global climate change,mitigation,adaptation effects of climate change on the desert ecosystem,as well as can support the establishment and mainenance of western nature reserve,asaresult,to make measures to local conditions,and to more efficiently protect the natural ecological environment and biodiversity.