Land-use changes in the small watershed of the Loess Plateau, hilly-gully region, China

Abstract

As more and more farmland is converted to forestry, the need for effective decision support regarding the use of land in the fragile ecological environment of the Loess Plateau hilly-gully area. The Luoyugou watershed was chosen as the study area to calculate the single dynamic degree, integrated dynamic degree, and change indexes of land use, as well as the land-use type transition matrix. This was done by interpreting the TM and SPOT images of the Luoyugou watershed in 1986, 1995, and 2004 and making statistical analysis. The results of our statistical analysis show that the conversion of slope farm land to terrace and forest land plays a dominant role in land-use changes in the Luoyugou watershed from 1986 to 2004. The land-use changes are mainly driven by population growth, socio-economic development, consumer spending, and investment in forest ecology.

Keywords

Loess Plateau hilly-gully region / Luoyugou watershed / Land use and cover changes / Driving force

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