Study on the Relationship between Landscape Pattern and Regional Biodiversity
LIN Shitao;XIE Dibing;LIU Yulin;CHEN Wenbo;Jiangxi Environmental Engineering Vocational College;Research Center of Environment and Landscape Ecology, Jiangxi Agriculture University;Key Laboratory of Environment and Landscape;Jiangxi College of Applied Technology;
Landscape pattern determines the function of landscape and ecological process, affecting the landscape within the species flow, information flow, energy flow, which has a significant effect on biodiversity. In this paper, choosing the ecological economic zone of Poyang Lake as the study area, SPSS 17.0 and Fragstats 3.3 techniques were selected with the ecological significance of landscape and biodiversity index from 38 counties in the landscape characteristics analysis, in order to explore the relationship between landscape pattern and regional biodiversity. The results showed that:(1) The relationship between the level of landscape types and landscape indices of biodiversity varies, some indicators, such as PLAND, COHESION land NP(0.476~(**), P0.01), was positively correlated with the regional biodiversity index, the relationship between landscape characteristics of cultivated land and the species most negative, showing the farmland landscape for the complex relationship between biodiversity. The PLAND(0.439~(**), P0.01), NP, COHESION(0.609~(**), P0.01) in the region were generally positively correlated with regional biodiversity index, and the PD, LPI and AWMSI of forest land were negatively correlated with regional biodiversity index. While most of the indicators of wetland landscape and regional biodiversity index showed significant positive correlation.(2) The landscape level between the landscape index and biodiversity related results showed that the index of regional landscape features in addition to MPS and regional biodiversity was negatively correlated, other landscape indicators were associated with regional biodiversity positively, and among them, that of TA, NP, LSI, and SHDI with regional species diversity was significant, indicating the size of landscape, number, shape, and diversity had a great influence on the biodiversity and various biological processes. The wetland landscape area and forest landscape were the main habitat of regional biodiversity, and at the same time as the grain producing areas, farmland landscape effects could not be ignored. Therefore, to protect the area of wetland, woodland and farmland landscape has important implications for maintaining regional biodiversity. The research has certain theoretical guiding significance for regional biodiversity protection and management.
【Fund】： 国家自然科学基金项目(41161031;41561043);; 江西省教育厅科学技术研究项目(GJJ161371)
【CateGory Index】： P901;X176
【CateGory Index】： P901;X176