| 生物和非生物因子对秋季海州湾长蛇鲻栖息地适宜性的影响 |
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| 引用本文： | 朱承之,张云雷,赛可,韦雯钰,谢姝妤,夏铭璟,任一平,薛莹.生物和非生物因子对秋季海州湾长蛇鲻栖息地适宜性的影响[J].海洋学报,2020,42(6):44-51. |
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| 作者姓名： | 朱承之 张云雷 赛可 韦雯钰 谢姝妤 夏铭璟 任一平 薛莹 |
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| 作者单位： | 1.中国海洋大学 水产学院，山东 青岛 266003 |
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| 基金项目： | 山东省支持青岛海洋科学与技术试点国家实验室重大科技专项（2018SDKJ0501-2）；国家自然科学基金项目（31772852，31802301）。 |
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| 摘 要： | 根据2011年和2013?2018年秋季在海州湾及邻近海域进行的底拖网调查数据，结合同步采集的底层水温、底层盐度、水深、资源密度、饵料生物等生物和非生物因子数据，开展长蛇鲻(Saurida elongata)栖息地适宜性的相关研究。利用提升回归树(Boosted Regression Tree, BRT)模型确定各环境因子的权重，分别采用算术平均法和几何平均法建立栖息地适宜性指数(Habitat Suitability Index, HSI)模型，并通过交叉验证确定最优模型。结果表明:海州湾长蛇鲻在秋季最适宜栖息的底层水温范围为17.5～18℃，最适底层盐度范围为31.3～32.0，最适水深范围为24～37 m；选择其3种主要饵料生物作为生物因子，即枪乌贼(Loligo spp.)、戴氏赤虾(Metapenaeopsis dalei)和六丝钝尾鰕虎鱼(Amblychaeturichthys hexanema)，与底层水温、底层盐度和水深共同作为影响因子建立HSI模型。结果显示，对长蛇鲻空间分布总偏差贡献率最高的是饵料因子，其次是水深和底层水温。通过交叉验证发现，运用算术平均算法，且赋予权重的HSI模型具有较低的赤池信息准则值(Akaike Information Criterion, AIC)。研究发现，海州湾秋季长蛇鲻的最适栖息地(HSI≥0.7)主要分布在34.5°～36°N，119°～121°E之间，其中35°～36°N海域的最适栖息地分布范围大，而且从近岸至远海，HSI指数有增加的趋势。
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| 关 键 词： | 海州湾 长蛇鲻 栖息地适宜性指数 生物因子 非生物因子 权重 |
| 收稿时间： | 2019/10/19 0:00:00 |
| 修稿时间： | 2019/12/17 0:00:00 |
Impacts of biotic and abiotic factors on the habitat suitability of Saurida elongata during autumn in the Haizhou Bay, China |
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| Zhu Chengzhi,Zhang Yunlei,Sai Ke,Wei Wenyu,Xie Shuyu,Xia Mingjing,Ren Yiping,Xue Ying.Impacts of biotic and abiotic factors on the habitat suitability of Saurida elongata during autumn in the Haizhou Bay, China[J].Acta Oceanologica Sinica (in Chinese),2020,42(6):44-51. |
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| Authors: | Zhu Chengzhi Zhang Yunlei Sai Ke Wei Wenyu Xie Shuyu Xia Mingjing Ren Yiping Xue Ying |
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| Institution: | 1.Fisheries College, Ocean University of China, Qingdao 266003, China2.Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China3.Field Observation and Research Station of Haizhou Bay Fishery Ecosystem of Ministry of Education, Ocean University of China, Qingdao 266003, China |
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| Abstract: | According to the demersal trawling survey data in the Haizhou Bay and its adjacent waters in autumn of 2011 and 2013?2018, we studied the habitat suitability of Saurida elongata, using biotic and abiotic factors data, such as bottom water temperature, bottom salinity, water depth, resource density, bait biology, collected synchronously. The weight of each environmental factor was determined by using the model of boost regression tree (BRT), and the habitat suitability index (HSI) model was established by using arithmetic mean method and geometry mean method respectively, and the optimal model was determined by cross validation. The results show that the most suitable bottom water temperature range for the Saurida elongata to inhabit in fall was 17.5?18℃, the most suitable bottom salinity range was 31.3?32, and the most suitable water depth range was 24?37 m. Three main bait organisms were selected as biological factors, namely, Loligo spp., Metapenaeopsis dalei and Amblychaeturichthys hexanema. The HSI model was established with the bottom water temperature, bottom salinity and water depth as the influencing factors. The results show that the feed factors contributed most significantly to the total deviation of spatial distribution, followed by the water depth and bottom water temperature. Through cross validation, it is found that the weighted HSI model with arithmetic mean method algorithm has lower Akaike Information Criterion (AIC). The results show that the most suitable habitat (HSI≥0.7) of Saurida elongata in autumn was 34.5°?36°N, 119°?121°E, among which 35°?36°N was the most suitable habitat, and the HSI increased from near shore to sea. |
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| Keywords: | Haizhou Bay Saurida elongata habitat suitability index (HSI) environmental variables biological variables weights |
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