基于生态绿当量的呼和浩特市土地利用结构优化评价与分析

Optimization Evaluation and Analysis on Land Use Structure City Based on Ecological Green Equivalent in Hohhot

自然界中各种绿色植物通过不同程度的光合作用,对环境产生一定的生态补偿作用,但贡献的"效率"不同。不同的植物之间能够通过生态绿当量互换,利用一定系数计算互换,以达到两种不同物种虽然面积不同,但生态贡献相同的效果。文章基于生态绿当量的视角,分析呼和浩特市2012年的土地利用结构,根据各类土地的服务价值,计算出生态绿当量值为0.709 2,生态绿当量值小于1,并预测了呼和浩特市2020年土地利用的生态绿当量值为0.831 5。结果表明,呼和浩特市土地利用结构不够合理,并提出进行耕地优化、优化未利用土地、优化城市建设用地等措施和策略。

All kinds of green plants in the nature can produce a certain ecological compensation effect on the environment by different degrees of photosynthesis,but the efficiency of contributions is different.Although the areas of two kinds of green plants are different,they have the same effect of ecological contribution by interchange ecological green equivalent calculated with a certain coefficient between different types of green plants.Based on the perspective of ecological green equivalent,the land-use structure in Hohhot in 2012 was analyzed.According to the service value of various lands,the value of ecological green equivalent was calculated to be 0.7092,and the value of the ecological green equivalent in Hohhot in 2020 was predicted to be 0.8315.These results show that the land use structure of Hohhot is unreasonable.Finally some measures and strategies are put forward to optimize the cultivated land,optimize unused land and optimize the urban construction land.