（4）通过灰色GM(1,1)模型，预测2021-2030年三县人均能值

(4) Through the grey GM(1,1) model, indicators such as the per capita emergy ecological footprint, per capita ecological carrying capacity, ecological profit and loss, and ecological pressure index of the three counties from 2021 to 2030 can be predicted. Safety. The ecological pressure index of Maqu County in the next 10 years is always in a relatively unsafe and unsafe state; the ecological pressure index of Shandan County has risen from an unsafe state to a very unsafe state in the past 10 years; the ecological pressure of Gaotai County in the past 10 years The index drops from the original less secure state to a normal state.

(4) Through the grey GM (1,1) model, the indexes such as per capita emergy ecological footprint, per capita ecological carrying capacity, ecological profit and loss and ecological pressure index of the three counties from 2021 to 2030 can be predicted. The ecological security of the three counties will still be unsafe in the next 10 years. The ecological pressure index of Maqu County will always be in a relatively unsafe and unsafe state in the next 10 years; The ecological pressure index of Shandan County increased from unsafe state to extremely unsafe state in the past 10 years; The ecological pressure index of Gaotai County has decreased from the original unsafe state to the general state in the past 10 years.

(4) Through the grey GM(1,1) model, it is predicted that from 2021 to 2030, the ecological footprint per capita, ecological profit and loss per capita ecological carrying capacity and ecological pressure index of the three counties can be obtained, and the ecological security of the three counties will still be unsafe in the next 10 years. The ecological pressure index of Maqu County in the next 10 years is always in a relatively unsafe and unsafe state; The ecological pressure index of Shan County in the past 10 years has risen from unsafe state to extremely unsafe state; The ecological pressure index of Gaotai County dropped from the original unsafe state to the general state in the past 10 years.