中国南海北部近海鲎资源调查及北部湾潮间带中华鲎幼鲎潜在栖息地评估

鲍虞园, 李银康, 林吴颖, 周志琴, 肖晓波, 颉晓勇

The current situation of horseshoe crabs in the offshore waters of northern South China Sea with analysis of the potential habitat distribution of juvenile Tachypleus tridentatus in Beibu Gulf

Yuyuan Bao, Yinkang Li, Wuying Lin, Zhiqin Zhou, Xiaobo Xiao, Xiaoyong Xie

表2 主要环境变量对幼年中华鲎分布的贡献率及重要性

Table 2 Contribution and importance of major environmental variables to the distribution of juvenile Tachypleus tridentatus

环境变量 Environmental variables 贡献率 Contribution rate (%) 重要性 Permutation importance (%) 平均海表温度 Mean sea surface temperature (sst) 45.9 10.2 最湿季均温 Mean temperature of the wettest quarter (bio 8) 36 21.3 距海岸线欧氏距离 Euclidean distance to the coastline (coastline) 4.4 44.4 最暖月最高温 Max temperature of the warmest month (bio 5) 3.1 3.9 降水季节性变化 Precipitation seasonality (bio 15) 2.8 0.6 年平均气温 Annual mean temperature (bio 1) 2.4 5.2 海底地形高程 Seabed topographic elevation (etopo 1) 2.3 9.4 年平均降水量 Annual precipitation (bio 12) 0.8 0.2 最干月降水量 Precipitation of the driest month (bio 14) 0.7 0.7 平均海表盐度 Mean sea surface salinity (sss) 0.5 2.2 气温季节性变化 Temperature seasonality (bio 4) 0.4 1 等温性 Isothermality (bio 3) 0.4 0.3 气温日较差 Mean diurnal range (bio 2) 0.2 0.5