Guangxi Beibu Gulf Economic Zone Research Articles

Detailed wetland-type classification using Landsat-8 time-series images: a pixel- and object-based algorithm with knowledge (POK)

ABSTRACT Mapping detailed wetland types can offer useful information for wetland management and protection, which can strongly support the Global Biodiversity Framework. Many studies have conducted wetland classification at regional, national, and global scale, whereas fine-resolution wetland mapping with detailed wetland types is still challenging. To address this issue, we developed an integration of pixel- and object-based algorithms with knowledge (POK) by combining pixel-based random forest and an object-based hierarchical decision tree. Taking the Guangxi Beibu Gulf Economic Zone (GBGEZ) and Guangdong-Hong Kong-Macao Greater Bay Area (GBA) as our study areas, we produced wetland maps with 10 wetland types and 6 non-wetland types using Landsat-8 time series. In addition, to comprehensively evaluate the accuracy of our wetland classification, we implemented accuracy validation based on test samples and data inter-comparison based on existing datasets, respectively. The results indicate that the overall accuracy of our wetland map was 91.6% ±1.2%. For wetland types, agricultural pond, coastal shallow water, floodplain, mangrove, reservoir, river, and tidal flat achieved good accuracies, with both user accuracy and producer accuracy exceeding 88.0%. For non-wetland types, most accuracies were greater than 72.0%. By comparison with existing datasets, it was found that our wetland map had good consistencies with the China Ecosystem-type Classification Dataset (CECD) land use dataset, MC_LASAC mangrove dataset, and Tidal Wetlands in East Asia (TWEA) tidal flat dataset. In 2020, the wetland area was 4,198.8 km2 in the GBGEZ and 10,932.2 km2 in the GBA. The main wetland types in the two coastal urban agglomerations were agricultural ponds, coastal shallow waters, mangroves, reservoirs, rivers, and tidal flats. Our study successfully mapped detailed wetland types in the GBGEZ and GBA, serving the Global Biodiversity Framework of Convention on Biological Diversity.

Spatiotemporal variations of eco-environment in the Guangxi Beibu Gulf Economic Zone based on remote sensing ecological index and granular computing

Spatiotemporal variations of eco-environment in the Guangxi Beibu Gulf Economic Zone based on remote sensing ecological index and granular computing

SWOT Analysis of the Regional Economic Development of Western Part of Guangdong Province — Take Zhanjiang City as a Case Study

The western part of Guangdong is an important part of Guangdong province, it owns myriads of natural resources, special geographical location, and stores rich crude oil. And economic development of western Guangdong will have significant impact on economic development of its surrounding provinces, such as Guangxi and Hainan. And Zhanjiang, as a center city in the western part of Guangdong province, plays an essential role in the economic development of the western Guangdong, and her economic development would fuel the development of three regions: Guangxi, Hainan and Guangdong. So, in this study, it will take Zhanjiang city in the southwest of Guangdong Province as an example, and will make a SWOT(An acronym for strengths, weaknesses, opportunities and threats)analysis of Zhanjiang's economic development factors on the basis of three national dividend policies, Outline Development Plan for the Guangdong-Hongkong-Macao Greater Bay Area, Development Planning of Guangxi Beibu Gulf Economic Zone, and the Overall Plan for the Construction of Hainan Free Trade Port, and then it would put forward the author's suggestions on how to make good use of the strengths and opportunities of this region from the perspective of regional economics.

Decoupling between industrial environmental pollution and industrial economic growth in Guangxi Beibu Gulf Economic Zone

In order to gain a deeper understanding of the decoupling change trajectory of the industrial environment pollution and industrial economic growth in Guangxi Beibu Gulf Economic Zone, and to better solve the problem of sustainable economic development under the concept of low-carbon economy, based on the decoupling theory, six major indicators such as COD, ammonia nitrogen, SO2, NOx, PM and industrial added value were selected to conduct the empirical analysis of the decoupling relationship between industrial environmental pollution and industrial economic growth in Guangxi Beibu Gulf Economic Zone from 2009 to 2016. The results showed that they were basically in an unstable state of incomplete decoupling, most of which were manifested as strong decoupling, accompanied by other types of decoupling, and no obvious evolutionary law. In terms of time, the decoupling reached its best in 2013 and 2016. In terms of space, the decoupling in Nanning was the best.

Quantitative analysis of the impacts of terrestrial environmental factors on precipitation variation over the Beibu Gulf Economic Zone in Coastal Southwest China

Taking the Guangxi Beibu Gulf Economic Zone as the study area, this paper utilizes the geographical detector model to quantify the feedback effects from the terrestrial environment on precipitation variation from 1985 to 2010 with a comprehensive consideration of natural factors (forest coverage rate, vegetation type, terrain, terrestrial ecosystem types, land use and land cover change) and social factors (population density, farmland rate, GDP and urbanization rate). First, we found that the precipitation trend rate in the Beibu Gulf Economic Zone is between −47 and 96 mm/10a. Second, forest coverage rate change (FCRC), urbanization rate change (URC), GDP change (GDPC) and population density change (PDC) have a larger contribution to precipitation change through land-surface feedback, which makes them the leading factors. Third, the human element is found to primarily account for the precipitation changes in this region, as humans are the active media linking and enhancing these impact factors. Finally, it can be concluded that the interaction of impact factor pairs has a significant effect compared to the corresponding single factor on precipitation changes. The geographical detector model offers an analytical framework to reveal the terrestrial factors affecting the precipitation change, which gives direction for future work on regional climate modeling and analyses.

Grey Correlation Analysis between Industrial Structures and Carbon Emission in Guangxi Beibu Gulf Economic Zone

Industrial restructuring is an important step to realize low-carbon economic development in Guangxi Beibu Gulf Economic Zone. This paper explores the relationship between industrial structures and carbon emission by analyzing development of industrial structures and low-carbon economy, status of carbon emission and grey correlation between industrial structures and carbon emission in the zone. The conclusion is that there is a close relationship between industrial structures and carbon emission and that secondary industries have the most important influence on carbon emission intensity in the economic zone. On this basis, suggestions are provided to promote development of low-carbon economy.

Research on Development Pattern of Low-Carbon Economy Industrial Park in Economic Zone of Guangxi Beibu Gulf

As the global climate warming, haze weather frequent, low-carbon economy research caused extensive concern of the academia, In this paper, we use panel data of 5 cites in China Guangxi province over the period 2000 to 2008, and construct a systematic model which concludes the factors of FDI technology of carbon emissions and carbon emission intensity. In addition, we refinement the relevant data of sub-regional study in order to receive an in-depth analysis of FDI impact on China’s carbon emissions under the influence of technology. As a result, there exists hysteresis in the impact of FDI on carbon emission in china, and lad FDI (lag 1 period) has significant positive effects on carbon emission. This article first analyses the background and connotation of low-carbon economy, low-carbon economy industrial park is analysed the related theoretical basis, and then analysed the necessity of the construction of low-carbon economy industrial park of Guangxi Beibu Gulf economic zone, finally we propose the construction of development model of low-carbon economy industrial park of economic zone of Guangxi Beibu Gulf.

环境价值评估中的WTP值和WTA值测算与非对称性——以广西北部湾经济区滨海生态环境保护为例

环境价值评估中的WTP值和WTA值测算与非对称性——以广西北部湾经济区滨海生态环境保护为例

The Guangxi Beibu Gulf Economic Zone and China's Maritime Silk Road in the 21st Century

Guangxi is perceived as the gateway for China-ASEAN (Association of Southeast Asian Nations) cooperation as it is the only province in China with land and sea access to ASEAN countries and the only western province with a sea gateway. The Guangxi authority attempts to make Guangxi Beibu Gulf Economic Zone an important part of the “Maritime Silk Road of the 21st Century” and give it new dynamics for boosting economic development.

An Analysis of the Development of Logistics in Guangxi Beibu Gulf Economic Zone

Although the logistics of Beibu gulf (Guangxi) is still in the primary stage such as the small-scaled logistics enterprises, low service level, weak logistics demand, sluggish infrastructure, and the chaotic logistics market, etc, it faces a series of development opportunities, its second-mover advantage is obvious and the growth potential is great. As long as we straighten out the management mechanism, overcome the bottleneck of the system, position accurately, analyze rationally, distribute reasonably, build logistics infrastructure according to the situation of the economic zone, pay great attention to the personnel training and learn from others’ experience, logistics can become a pillar industry in Beibu gulf economic zone.