Research on landscape structure and pattern of marine ranching in Zhelin Bay, East Guangdong

The integrated development of marine ranching and recreational fishery is one of the development directions of marine ranching in China. At the present stage, the marine ranching leisure industry is small in scale and single in type, mainly for recreational fishing and diving, and its landscape ornamental function needs to be further explored and developed. The research on the landscape pattern of marine ranching mainly focuses on the formation and distribution of marine ranching landscape resources as well as their layout and arrangement in landscape space, aiming to understand the specific embodiment of the variation degree of its ecosystem or spatial attributes. Taking the marine ranching demonstration area in Zhelin Bay in eastern Guangdong Province as the research case, this paper used landscape pattern analysis method to calculate the characteristic index of landscape elements and the heterogeneity index of landscape. The results showed that the natural landscape in the marine ranching demonstration area in Zhelin Bay in eastern Guangdong Province is the landscape matrix, however, because of the largest patch area in the semi-natural landscape and the the highest fragmentation index, it is most affected by human activities, therefore the protection of biodiversity and the maintenance of landscape habitat should be strengthened. In addition, the large degree of separation between cultural landscape and the overall landscape leads to the poor connectivity of the overall landscape, affecting the landscape effect; The coastal landscape patches are few and the richness is not high, however, according to the survey, the surrounding tourism resources are abundant, so there is a lack of integrated development and utilization with marine ranching in Zhelin Bay, eastern Guangdong Province. In short, by analyzing the distribution and interaction of different landscapes in the pattern space of marine ranching landscape, this paper can provide data support for the next step of landscape ecological planning, and provide support for the development and utilization of marine ranching recreational fisheries and ecological landscape sustainable development, comprehensively enhancing the ecological, economic and social values of marine ranching.