Abstract
In the face of increasingly severe ecological degradation in the typical fragile ecological regions around the world, many different ecological technologies (ET) have been developed. However, there is still a lack of any comprehensive analysis of these technologies and the effects of their implementation on regional ecological systems, and this largely limits the promotion of the excellent technologies and their applications. Based on the Web of Science core online database and specific literature screening criteria, 3409 papers were selected to summarize and analyze the development trends, research hotspots and regional comparisons of ecological technology effect research. Furthermore, 19 publications from 14 regions were selected to compare and analyze the effects of eight commonly applied ET: shelterbelt, artificial afforestation, water-saving irrigation, terrace, stereo-agriculture, contour tillage, ban/rest/rotational grazing and fallow/no tillage/minimum tillage. The results show four key features: (1) The research on the effect of ecological technology is still in the period of continuous development. (2) “Erosion” is the largest node in the keyword co-occurrence map of ecological technologies effect research, followed by “management”. (3) Most countries pay attention to the studies of “erosion” and “runoff”, although there are differences in research on the effects of ecological technologies in different countries. (4) The same technology could be applied to different regions but the effects varied, and the ecological technologies that have been implemented have generally achieved good restoration effects; however, the improper use of ecological technologies may bring negative consequences. This study provides important support for ecosystem restoration and improvement in the ecologically degraded areas in China and around the world, and it provides a reference for the export and introduction of excellent technologies.
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