基于生态系统稀缺性与生物量损失的道路选线方法

道路工程的建设对生态环境造成了一定的影响,导致了生态系统的破碎化,定量评价道路建设对生态系统造成的损失对道路设计和规划具有重要的参考价值。道路线路的选择直接决定着对生态系统影响程度的大小,因此道路方案的比选分析对生物多样性保护而言具有很重要的参考价值。以临策铁路天鹅湖至额济纳段线路为研究对象,利用生态系统稀缺性和生物量损失为评价指标,分析不同线路方案对生态系统造成的损失。结果表明:临策铁路天鹅湖至额济纳段绕避胡杨林保护区方案与其他三个方案相比,对生态系统造成的损失最小,为最优方案。

Road comparison based on ecosystem rarity and biomass loss

The construction of road project changed patterns of surrounding ecological environment, resulted in the fragmentation of ecosystem. And the impact of a road project onecosystemcan be estimated quantitatively, which hasSimportantSreferentialSvalue for road design and planning. Road selection directly determines the size of the degree of impact on the ecosystem ,so that road scheme comparison analysis for biodiversity conservation, which has important reference value . Chosing a section of Linhe-Ceke railway from Swan Lake to Ejinaasa case study, based on ecosystem rarity and biomass loss, the loss of ecosystems caused byalternative routes were measured and comparedtheseroutes quantitatively. The results showed that the loss of ecosystems caused byavoidance TugaiSforests reservescheme was less than other three schemes.Therefore, it was considered as the optimal solution.