滩涂养殖对海水养殖绿色全要素生产率增长的影响研究

Study on the impact of intertidal mudflat culture on the growth of green total factor productivity of mariculture

摘要:

提高海水养殖高质量发展是现阶段海洋经济高质量发展的应有之义,而滩涂养殖已成为影响海水养殖高质量发展的重要因素。本文在考虑非期望产出基础上,运用SBM-GML模型对2008－2018年中国沿海10个省(市、自治区)海水养殖绿色全要素生产率进行测度,并进一步研究滩涂养殖对海水养殖绿色全要素生产率增长的影响。研究发现：①海水养殖绿色全要素生产率在0.9～1.15之间波动,整体呈波动上升趋势,且生产率区域间差异显著,呈现地区不平衡特征。②滩涂养殖对海水养殖绿色全要素生产率增长的负向影响。③负向影响的原因主要包括滩涂养殖种类、养殖方式及管理三个方面。据此,从高效利用已有的滩涂养殖区域、积极建立滩涂复合养殖生态系统、提高对滩涂养殖的管理水平三方面提出改善滩涂养殖的相关建议。

Abstract:

Improving the high-quality development of mariculture is an important part of the high-quality development of the marine economy at this stage, and intertidal mudflat culture has become an important factor affecting the high-quality development of mariculture. On the basis of considering undesired output, this paper uses the SBM-GML model to measure the green total factor productivity of mariculture in 10 coastal provinces (municipalities, autonomous regions) of China from 2008 to 2018, and further studies the impact of intertidal mudflat culture on the growth of green total factor productivity of mariculture. It is found that the green total factor productivity of mariculture fluctuates between 0.9-1.15, and the overall trend is rising, and there are significant regional differences in productivity, showing the characteristics of regional imbalance. The intertidal mudflat culture has a negative impact on the growth of green total factor productivity of mariculture. The reasons for the negative impact mainly include three aspects of mariculture species, mariculture methods, and management. Based on this, relevant suggestions for improving intertidal mudflat culture are put forward from three aspects: efficiently using the existing intertidal mudflat culture area, actively establishing a intertidal mudflat culture composite aquaculture ecosystem, and improving the management level of intertidal mudflat culture.