基于LUCC的生态型山区土地敏感性评价系统设计

Design of ecological mountain land sensitivity evaluation system based on LUCC

针对山区土地所面临的现实风险,借鉴生态系统的敏感性评价原则,设计基于LUCC的生态型山区土地敏感性评价系统。联合知识库与专家体系处理采集到的生态型山区土地地理信息数据,完成评价系统的硬件设备连接。根据土地使用(LUCC)概况,计算山区土地利用动态度指标的具体数值,按照地理信息数据的区域差异性标准,求解生态服务价值系数,再结合相关数据参量,确定敏感性响应指标所属数值范围,完成生态型山区土地敏感性评价系统设计。实验结果表明,当土地使用率处于50%~70%之间时,种植作物的生长速度最快,山区生态系统多样性能够保持在较高的数值水平,故而为解决生态型山区土地所面临的现实使用问题,可将土地占用率控制在该数值标准之内。

In view of the realistic risks faced by the land in mountainous areas,an ecological mountain land sensitivity evaluation system based on LUCC(land-use and land-cover change)is designed by referring to the principles of ecosystem sensitivity evaluation.In combination with the knowledge base and the expert system,the collected ecological mountain land geographic information data is processed,and the hardware of the evaluation system is connected.According to the general situation of LUCC,the specific value of the dynamic degree index of the mountain land utilization is calculated.The ecological service value coefficient is solved according to the regional difference standard of geographic information data.The value range of sensitivity response index is determined in combination with relevant data parameters.So far,the design of ecological mountain land sensitivity evaluation system is completed.The experimental results show that,when the land use rate is within 50%~70%,the growth rate of plantation crops is the fastest,and the diversity of mountain ecosystem can be maintained at a higher numerical level,so the land occupation rate can be controlled within this numerical standard to solve the practical use problems faced by ecological mountain land.