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Theoretical critical value curve and driving force formation of ecological migration in the arid land

机译：干旱区生态迁移的理论临界值曲线和驱动力形成

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摘要

The features of the fragile eco-environ-ment of the arid land decide that its capacity of disturbance-resistance is lower. The natural desert oases in the arid land are in mosaic patches distributed in a wide Gobi desert. The population distribution is greatly dependent on water resources. The population is characterized with dispersed distribution, simple production and living style, and poverty and remoteness. The reason why the ecological migrations are carried out lies in the ecological problems. "Ecological degradation" is the main driving force of the ecological migration. Then, the strength of the driving force depends on the degree of ecological degradation. Hence, whether to carry out ecological migration depends on the extent of ecological degradation. Theoretically, the critical value curve for calculating ecological migration in the arid land is put forward through comprehensive research of relative problems of ecology, economics etc., combined with the ecological migration experience in the arid land, and based on the features of the arid environment. In this article, with this curve, the theoretical research and some practice of the ecological migration have been done from the perspective of natural behavior and governmental behavior of the driving force formation of ecological migration. It analyses the active driving force (factors) and negative forces (factors), and points out the timing and steps of implementing the ecological migration in the arid land. The theoretical curve embodies certain originality and applicability, which provides a quantitative method for evaluating the degree of ecological degradation and the theoretical base for implementing ecological migration projects.
机译：干旱地区脆弱的生态环境特征决定了其抗干扰能力较低。干旱地区的天然沙漠绿洲分布在广阔的戈壁沙漠中的马赛克地块中。人口分布在很大程度上取决于水资源。人口的特点是分布分散，生产和生活方式简单，贫穷和偏远。进行生态迁移的原因在于生态问题。 “生态退化”是生态移民的主要动力。然后，驱动力的强度取决于生态退化的程度。因此，是否进行生态迁移取决于生态退化的程度。从理论上讲，结合生态，经济等相关问题的综合研究，结合干旱地区的生态迁移经验，提出了计算干旱地区生态迁移的临界值曲线。 。本文利用这一曲线，从自然行为和政府行为对生态移民驱动力形成的角度进行了生态移民的理论研究和实践。分析了主动驱动力和负驱动力，并指出了在干旱地区实施生态移民的时机和步骤。该理论曲线体现了一定的独创性和适用性，为评价生态退化程度提供了定量方法，为实施生态移民工程提供了理论基础。

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