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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
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Temporal and Spatial Characteristics of Relative Fatness of Microtus fortis and Correlation with Rainfall, Temperature and NDVI in Dongting Lake Wetland
Author of the article:ZHAO Yunlin1, WANG Shuangye1, FENG Lei1, WANG Yong
Author's Workplace:(1.Key Laboratory of Forestry Remote Sensing Based Big Data & Ecological Security for Hunan Province, Changsha Hunan, 410004, China; 2.The Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha Hunan,410004, China; 3. School of Chemical and Material Engineering, Hunan City University, Yiyang Hunan,413000, China)
Key Words:Microtus fortis, relative fatness, rainfall, temperature, NDVI
Abstract:The response mechanism to environment pressure may different for different gender animals. Relative fatness is a convenient index always used to indicate survive quality. Rainfall, temperature and NDVI I is always considered as environment forecast factors. In order to understand the characteristic of relative fatness of Microtus fortis population and the relationship between relative fatness and the above environment forecast factors, population survey was done and the 7 survey sites was included. The habitat type was different for all survey sites. At the same time, data of rainfall, temperature and NDVI were collected for Dongting Lake during the study period. The correlation between relative fatness and environment forecast factors were analysed. The results showed that the characteristics of different gender M. fortis population were homologous. There were obvious different for relative fatness of male and female Microtus fortis population in different habitat during Spring and Winter, while variety trend of relative fatness of male and female Microtus fortis population is similar in Summer and Autumn. In wetland region, relation fatness index of male and female M. fortis population was no difference between seasons in carex habitat, but the change was detected was found in reed habitat. There was no obvious correlation between relative fatness of male M. fortis population and environment forecast factors, no matter the rainfall, temperature, NDVI in wetland or NDVI in farmland. Statistics analysis show the relative fatness of female M. fortis population had relationship with rainfall and NDVI in farmland, but no correlation with temperature and NDVI in wetland. Relation fatness of M. fortis population may reflect the ecological pressure in some case. Because the rainfall, temperature, NDVI are not the environmental limit factors of M. fortis population in Dongting Lake, there is no close correlation between the above factors and relation fatness of the population. In some case, the relation fatness of M. fortis population still can indicate environment change for M. fortis population change.
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