试验条件下岩原鲤幼鱼栖息地适宜性模型及最小栖息面积估算  

Habitat suitability index model and minimum habitat area estimation of young Procypris rabaudi (Tchang):A simulation experiment in laboratory

作　　者：冯宪斌[1,2] 朱永久[1,3] 李茜[1,2] 何勇凤[1] 赵建华[1,2] 杨德国[1,2,3] 

机构地区：[1]中国水产科学研究院长江水产研究所/农业部淡水生物多样性保护重点实验室,武汉430223 [2]华中农业大学水产学院,武汉430070 [3]中国水产科学研究院淡水渔业研究中心,江苏无锡214081

出　　处：《应用生态学报》2013年第1期227-234,共8页Chinese Journal of Applied Ecology

基　　金：农业科研杰出人才资金项目;中央级公益性科研院所基本科研业务费专项资金项目(2011JBFZ03)资助

摘　　要：在室内微生境模拟条件下,应用试验生态学方法,分别评估了岩原鲤幼鱼对底质、光照、水深3种生境因子的适宜性指数(HSI),建立了其栖息地适宜性模型,并初步估算了岩原鲤幼鱼的最小栖息面积.结果表明:岩原鲤幼鱼对底质、光照、水深3种生境因子的适宜栖息范围分别为砾石直径10～15cm、光照强度0.2～1.8lx、水深范围0～15cm(离底距离);其适宜性指数表达式分别为SIS=1.7338e-0.997x(R2=0.89,P<0.01,SIS为底质适宜性指数,x为砾石直径)、SIL=3.0121e-1.339x(R2=0.93,P<0.01,SIL为光照适宜性指数,x为光强)、SIW=2.4055e-1.245x(R2=0.97,P<0.01,SIW为水深适宜性指数,x为水深).算术平均法最适用于岩原鲤幼鱼的栖息地适宜性模型估计,最适模型为HSI=(SIS+SIL+SIW)/3.共发现7组岩原鲤幼鱼建立并维持着相对稳定的栖息地范围,其栖息地面积范围为628～2015cm2,平均值为1114cm2.Under the conditions of simulated micro-habitat in laboratory, and by using experimental ecological methods, this paper evaluated the suitability index （HSI） of young Procypris rabaudi for habitat factors （substrate, light intensity and water depth）. The habitat suitability models of the young P. rabaudi were established, and the minimum habitat area of the young P. rabaudi was estimated. The young P. rabaudi preferred the habitats with the gravel diameter from 10 to 15 cm, light intensity from 0.2 to 1.8 lx, and water depth from 0 to 15 cm （distance from the bottom of the tank）. The three suitability index models of the substrate, light intensity and water depth for the young P. rabaudi were SIs = 1. 7338e^-0.997x（Sls is the suitability index of substrate, and x is the gravel diameter; R2 =0.89, P〈0.01 ）, SIL =3. 0121e^-1.339x（ S1L is the suitability index of light in- tensity, and x is the light intensity; R^2 =0.93, P〈0.01 ）, and SIw =2. 4055e^-1.245x（SIw is the suit- ability index of water depth, and x is the water depth ; R^2 = 0.97, P〈0.01 ）, respectively. Arithmetic mean model HSI= （SIs＋SIL＋SIw ）/3 was most available for the estimation of the habitat suita- bility of young P. rabaudi. A total of seven groups maintained a relatively stable habitat area range were of young P. rabaudi which established and found. This habitat area ranged from 628 to 2015 cm^2, with an average of 1114 cm^2.

关 键 词：岩原鲤 生境因子 适宜性指数 栖息地模型 

分 类 号：S917.4[农业科学—水产科学]