JOURNAL OF NATURAL RESOURCES >
The historical evolution of urban settlements and man-land coupling in Wuding River Basin
Received date: 2020-05-18
Request revised date: 2020-08-18
Online published: 2021-03-28
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The Wuding River Basin, located in the Loess Plateau of the middle reaches of the Yellow River, is a typical transitional zone and ecologically fragile area in history. Based on the analysis of the historical development process of urban pattern and the coupling relationship between human and land in this process, this paper puts forward the countermeasures and suggestions for the future urban development and ecological protection of the basin in combination with the current situation of urban development. The main findings are as follows: the development and evolution of the urban hub area in the basin was bow shaped in the Tang Dynasty and before, when the natural conditions were better, and the urban spatial layout was mainly based on natural factors; the hub area after the Tang Dynasty presented a triangle pattern, and the urban spatial layout was mainly based on human factors; the contemporary urban pattern of the basin inherited the context of historical development, but the driving force of urban development was mainly based on resources along the Great Wall. The human activities have an impact on the vegetation coverage in some areas; at the same time, the ecological protection policies, such as returning farmland to forests, wind prevention and desertification control, have exerted positive effects. It is suggested that the development of the river basin should be reasonably determined and concentrated around the main cities and towns in combination with the national strategic positioning and regional ecological environment bearing capacity. In addition, the ecological barrier and key prevention and control areas are constructed with the river as the backbone.
TONG Biao , DANG An-rong , ZHOU Hong-yu . The historical evolution of urban settlements and man-land coupling in Wuding River Basin[J]. JOURNAL OF NATURAL RESOURCES, 2021 , 36(1) : 38 -54 . DOI: 10.31497/zrzyxb.20210103
表1 植被覆盖趋势分级参数表Table 1 Parameters of cluster for NDVI changing trends |
综合分级 | 分级说明 |
---|---|
显著减少 | S<-0.02,且|Z|>1.64 |
轻微减少 | -0.02<S<-0.01,且|Z|>1.28 |
基本稳定 | |S|<0.01,或|Z|<1.28 |
轻微增加 | 0.01<S<0.02,且|Z|>1.28 |
显著增加 | S >0.02,且|Z|>1.64 |
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