Study On Improvement Of Quality Of Exported Timber Forest Products In China

China is the world’s largest trading country of wood forest products.However,China’s wood forest product trade is a traditional export-oriented trade development mode,and its growth is excessively dependent on the external market,so there are great trade security risks,and the export faces multiple challenges.The trade war and domestic environmental protection policies have led to the increasing production costs of timber forest product manufacturers,especially under the dual pressure of the COVID-19 pandemic starting in 2020 and trade friction,the export situation of timber forest products has become even worse.Quality upgrading of exported products is conducive to adjusting the income distribution gap,promoting trade growth,and improving the competitiveness of enterprises in the international market,which has become the only way and urgent task to drive the export growth of timber forest products.Therefore,taking "quality" as the entry point,the in-depth study of the quality upgrading mechanism and upgrading effect of exported timber forest products not only enriches the literature of the quality of exported timber forest products in the theoretical and empirical level,but also has important practical significance for the quality upgrading of China’s timber forest products.Based on the macro and micro databases such as UN Comtrade database,China Customs database and China industrial enterprise database,this dissertation first analyzes the current situation and development trend of timber forest product trade in the world and China,and then provides an improved measurement method of exported product quality combining macro measurement methods and micro measurement methods.Compared with the existing micro measurement methods,under the method,the consistency of macro and micro data of quality of exported products is higher.According to the quality data,this dissertation studies the quality of exported timber forest products in China.Based on a heterogeneous enterprise model with endogenous product quality of Hallak and Sivadasan(2013),the dissertation integrates natural resources as production factors into the production function,analyzes the quality upgrading mechanism of exported timber forest products,expands the model to open economy through iceberg trade cost,analyzes the internal mechanism of trade liberalization affecting the quality of exported timber forest products,finally introduces enterprise innovation by the method of Aghion et al.(2019),and analyzes the internal mechanism of enterprise innovation behavior affecting the quality of exported timber forest products.Then,this dissertation uses the micro-enterprise data to examine the quality upgrading mechanism of exported timber forest products proposed by the theoretical model of this dissertation,and the analysis results show that:(1)In general,trade liberalization has significantly reduced the quality of exported timber forest products,while the total factor productivity(TFP)has promoted the quality of exported timber forest products in China.(2)From the perspective of influence mechanism,the influence of export trade liberalization on the quality of exported timber forest products is not significant;import trade liberalization makes the quality of exported timber forest products significantly decreased;TFP improves the quality of exported timber forest products in enterprises with innovation significantly higher than enterprises without innovation.(3)For enterprises with different ownership properties,the impact of trade liberalization and enterprise productivity on the quality of exported timber forest products is different.For state-owned enterprises,the effect of import trade and export trade liberalization on the quality of exported timber forest products is not significant,and the effect of enterprise innovation input and innovation output on the effect of TFP on the quality of exported timber forest products is not significant;for foreign and private enterprises,the effect of import and export trade liberalization is significantly negative.Moreover,the enterprise innovation input(output)significantly improves the effect of TFP on promoting the quality of exported timber forest products,and only the role of private enterprise innovation input is not significant.(4)For enterprises in different regions,the impact of trade liberalization and enterprise productivity on the quality of exported timber forest products is also different.The import trade liberalization has reduced the quality of exported timber forest products in eastern China,but its impact on enterprises in central China is not significant.At the same time,it makes the quality of exported timber forest products in western China rise significantly;the innovation input(output)of enterprises in eastern,central and western regions has improved the role of TFP in promoting the quality of exported timber forest products,while only the innovation input of enterprises in western regions is not significant.Further,based on the multi-product enterprise framework,this dissertation divides the quality upgrading effect of exported timber forest products into product change effect and product improvement effect,and finds that trade liberalization significantly promotes the introduction of new products and eliminated old products,but significantly reduces the product quality level of continuously exported products and continuous export market;and the product change effect and product improvement effect brought by TFP promotion are completely opposite to trade liberalization.The policy implications concluded in this dissertation mainly include:(1)take active and effective measures to promote the independent innovation of timber forest product manufacturers;(2)flexibly formulate trade liberalization policies according to regional differences;(3)further deepening the "Belt and Road" trade cooperation of timber forest products;(4)comprehensively optimize the industrial structure of timber forest products and make uniform layout.