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"Land resources"
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The nexus between misallocation of land resources and green technological innovation: a novel investigation of Chinese cities
As an important production factor, land resources significantly impact green technology innovation. However, the misallocation of land resources caused by the government's \"second-hand\" land supply strategy has become increasingly prominent, which will adversely affect green technology innovation by affecting the allocation of innovative elements. Based on the research data of 252 cities in China from 2008 to 2017, this paper uses panel space measurement estimation and panel threshold estimation empirical methods to test the theoretical hypothesis of the impact of misallocation of land resources on green technology innovation. The study finds that local or neighboring land resources' misallocation has a hindering effect on local green technology innovation. Furthermore, the misallocation of land resources has a threshold effect on the impact of green technology innovation. The relatively high level of local economic development and environmental regulation reduces the restraining effect of the misallocation of land resources on green technology innovation, and vice versa. Therefore, local governments should optimize the allocation of innovative elements, accelerate the construction of an efficient and market-oriented green technology innovation system, reduce the excessive intervention in land resources, and enhance the vitality of innovation entities to improve the level of green technology innovation.
Journal Article
Study on economic value of urban land resources based on emergy and econometric theories
Extensive economic growth, waste of land resources and low land value are common problems in many cities around the world. Therefore, it is necessary to calculate the value of urban land resources reasonably. An economic value accounting model of urban land resources was constructed based on emergy and econometric theory in this study. Among them, emergy theory served natural land resources (waterbody, forest land and grassland) and economic theory served non-natural land resources (road and building land). Taking Zhengzhou City, China, as the study area, the results showed that the economic value of waterbody, forest land, grassland, road and building land in 2012 was, respectively, ¥3.08 × 10
10
, 9.19 × 10
9
, 5.48 × 10
9
, 3.07 × 10
10
, 2.83 × 10
12
. Due to the characteristic of building land, both economic value and economic density were the largest, exceeding the total value of urban natural resources. This research may provide scientific management and decision-making basis for the government to develop general plans for land use. Moreover, the value research of urban land resources is the basis and precursor for urban flood disaster assessment.
Journal Article
Water 4.0 : the past, present, and future of the world's most vital resource
\"Turn on the faucet, and water pours out. Pull out the drain plug, and the dirty water disappears. Most of us give little thought to the hidden systems that bring us water and take it away when we're done with it. But these underappreciated marvels of engineering face an array of challenges that cannot be solved without a fundamental change to our relationship with water, David Sedlak explains in this enlightening book. To make informed decisions about the future, we need to understand the three revolutions in urban water systems that have occurred over the past 2,500 years and the technologies that will remake the system. The author starts by describing Water 1.0, the early Roman aqueducts, fountains, and sewers that made dense urban living feasible. He then details the development of drinking water and sewage treatment systems--the second and third revolutions in urban water. He offers an insider's look at current systems that rely on reservoirs, underground pipe networks, treatment plants, and storm sewers to provide water that is safe to drink, before addressing how these water systems will have to be reinvented. For everyone who cares about reliable, clean, abundant water, this book is essential reading\"-- Provided by publisher.
Book
Land use and land cover change and driving mechanism in the arid inland river basin: a case study of Tarim River, Xinjiang, China
Identifying the primary causes and examining the processes and trends of land use change are crucial for land use planning, utilization of regional resources and environment management. Combining the ecological quantity analysis with GIS technology, based on the land use data and remote sense images, the changes of land use and land cover and the driving force were analyzed in the mainstream of the Tarim River from 1973 to 2005. The results showed that the areas of cropland and built-up land increased obviously, grassland, forest and wetland decreased and unused land increased first and then decreased. The major patterns of land use change were from grassland (major source), woodland, unused land and wetland to cropland, from a great lot of cropland to built-up land, as well as from grassland (occupying 30 %), woodland and wetland to unused land. Land use change underwent a process of obvious change–slow change–obvious change–tremendous change in the period of 1973–2005. The influence of natural factors including elevation, slope, soil types, distance from river course and climate change on land use and land cover change was limited. Population growth, economic development and industry policy were the dominant driving force for land use and land cover change in the mainstream of the Tarim River. The sustainable use of land resources is significant to keep economic development and environmental protection in arid inland river basin.
Journal Article
Research on fuzzy evaluation of ecological safety of land resources in Pearl river Delta area based on DPSIR framework
Land is an essential component of the natural eco-system, the source of human existence, and has a crucial influence on the future health development and stability of human society. Analyzing the status of land eco-safety in the Pearl River Delta area can provide a scientific basis and decision-making support for the sustainable use of land resources in the Pearl River Delta region. At the same time, it can reveal the complex factors affecting the eco-safety of land resources in the region and their interaction mechanisms. Based on the 2012–2021 data of the Pearl River Delta area municipalities, This study chooses the DPSIR theory to construct the land resource eco-safety evaluation system, which contains 5 criterion layers and 21 indicator layers. The evaluation system not only integrates the systematic and hierarchical advantages of the DPSIR theoretical but also makes full use of the flexibility of the fuzzy comprehensive evaluation method in dealing with uncertainty, effectively improving the accuracy and reliability of the evaluation. The spatial visualization tool Quantum GIS(QGIS) and objective evaluation index method entropy weight method topsis(EWM-TOPSIS) were applied to assess the land ecological situation in the Pearl River Delta area from 2012 to 2021. The correlation coefficients between the land eco-safety condition in the Pearl River Delta area and the influencing factors were derived using gray correlation analysis (GCA). The results show that (1) there is a differentiation in the land resource eco-safety status among the cities in the Pearl River Delta area, with Jiangmen (0.495) in the best condition and Dongguan (0.425) in the worst condition compared to the other eight cities. (2) During the study period, the Pearl River Delta’s land resource eco-safety composite index area increased by 187.23%. The land status shows the stage characteristics of small climb, smooth improvement, and flat. (3) The deficiency of land ecological management system and policy was revealed, and the optimization and perfection of management system was put forward as the key factor to improve urban ecological security.
Journal Article
Beyond the North-South culture wars : reconciling Northern Australia's recent past with its future
Increasingly, Australia's agriculturalists are looking to the nation's north to escape the decline in southern Australia's water and soil resources. Booming mineral and gas development is also helping to drive the nation's economic success. At the same time, the south's conservation sector would like to see much of the north preserved as iconic wilderness. Both conservation and resource development interests alike are often at odds with the interests of the north's traditional owners, many of whom remain trapped in welfare dependency and poverty. Indeed, to the ire of north Australians, the past four decades of north Australian history have indeed been characterized by these national-scale conflicts being played out in regional and local communities. This book explores these conflicts as well as the many emerging opportunities facing the development of the north, suggesting that a strong cultural divide between northern and southern Australia exists; one that needs to be reconciled if the nation as a whole is to benefit from northern development. The author first explores where these historical conflicts could take us without a clear forward agenda. A story-based personal narrative from my long and diverse experience in the north gives life to these themes. Finally, the book then draws on these stories to help shape a cohesive agenda for the north's future.
Book
Evaluation of land resources carrying capacity based on entropy weight and cloud similarity
Land is the foundation of human life and development, which is also the most important part of a country. The study of land carrying capacity is one of the important contents of land management, wherein the evaluation of land resource carrying capacity (LRCC) is an important reference for land resource planning. Aiming at the information fuzziness and uncertainty in the evaluation of LRCC, firstly, a comprehensive evaluation model based on entropy weight and normal cloud similarity was proposed, which is based on cloud model theory and combined with normal cloud similarity measurement method and entropy weight method. Secondly, taking the asphalt pavement experiment as an example for empirical analysis, the experimental results are consistent with the actual situation, which proves the feasibility and effectiveness of the proposed model. Finally, taking China’s Chongqing city as the research area, the proposed evaluation model is used to study LRCC. The research results indicate that the comprehensive carrying capacity and average carrying capacity of various systems in China’s Chongqing have been improved in the past decade. Among them, the comprehensive carrying capacity rose from the second level during the \"12th Five-Year Plan\" period to the third level during the \"13th Five-Year Plan\" period. In the future, it is necessary to focus on the improvement of soil and water resources system and economic and technological system. This conclusion reflects LRCC of Chongqing in China objectively and has a reference value for Chongqing's land planning.
Journal Article