Biodiv Sci ›› 2017, Vol. 25 ›› Issue (10): 1105-1113.DOI: 10.17520/biods.2017134

• Original Papers: Plant Diversity • Previous Articles     Next Articles

Assessment of the space neighborhood effect on nature reserves based on temporal and spatial changes of artificial objects: a case study on Shapotou National Nature Reserve

Fangzheng Liu1, Peng Zhang2, Yubo Zhang1, Bing Chen1, Jinhong Du1, Wei Wang1,*(), Junsheng Li1   

  1. 1 Biodiversity Research Center, Chinese Research Academy of Environmental Sciences, Beijing 100012
    2 Shapotou Desert Research and Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000
  • Received:2017-05-04 Accepted:2017-08-06 Online:2017-10-20 Published:2018-05-05
  • Contact: Wang Wei

Abstract:

It has been shown that the established nature reserves will affect the surrounding ecological environment, that is, the space neighborhood effect on nature reserves. At present, the ecological environment of the surrounding areas of some nature reserves has changed greatly, especially in the temporal and spatial changes of artificial objects. To study the space neighborhood effect on nature reserves based on temporal and spatial changes of artificial objects will do significant help to maintain the survival and safety of nature reserve and its protected objects. To analyze the variation intervals of the space neighborhood effect and the distance scale, and to identify the driving factors, we chose Ningxia Shapotou National Nature Reserve as a case study. We divided the study area within a range of 20 km around the nature reserve, extracted the artificial objects from the remote image analysis between 1990 and 2015, and used Mann-Kendall trend analysis and driving factor correlation test analysis, to assess the space neighborhood effect of nature reserves based on temporal and spatial changes in artificial objects. Results showed that the areas and patterns of artificial objects were expanding, which meant the impacts of human activities were increasing over time. In addition, the space neighborhood effect was most evident with increases in time and decreases in the distance scale. Trends in the space neighborhood effect were divided into three descending intervals, and the driving factors differed. In the first interval (1-5 km), the trend was occasionally significant, and shelter forest was the main driving factor. In the second interval (6-10 km), significance of the descending trend could be observed, and building became the driving factor. Lastly, the driving factor was farming, and a very significant descending trend was found in the third interval (11-20 km). Since the establishment of the Ningxia Shapotou National Nature Reserve, its surrounding land-use changes are significantly influenced by human activities, which needs attention.

Key words: nature reserves, space neighborhood effect, spillover, leakage, trend analysis