## 3 Theoretical Study  
### Landscape Value Analysis  
Landscape value analysis provides a way to understand the subjective attitude of the community. The theoretical basis of this analysis is rooted in transactionalism, which holds that people, as active landscape factors, interact with landscape (thinking, experiencing and activities), and endow landscape value with perception through a certain social and cultural background [4]. On the other hand, people are attached to this kind of landscape and value system which realizes personal efficiency and identity, and influences people's attitudes, choices and behavior orientation [13]. As landscape value relates human value assignment with space and reflects human subjective importance and its spatial distribution, it is beneficial to reveal the social suitability of a given project from the perspective of spatial planning and management and to help understand the public attitude toward a given project and potential conflict points of different interest groups [14].  
Landscape value analysis technology (LVM) is used to map the landscape value perceived by the public and to analyze its spatial characteristics, to find the possible land use mode coordinated with the landscape value [14]. In the past ten years, landscape value analysis has been used in various fields of natural resources protection to improve the quality of planning and management, such as in national forest management [15; 16], the management of national parks and protected areas [17; 18], the management of coastal zones [19; 20], urban parks [21], river wetlands [22], etc. [PERSON] and others have made  
Figure 1: Location of the research case in Jinan.  
useful explorations in this field. Based on previous studies, [PERSON] summarized 12 basic landscape value types for natural landscapes (forests and national parks), including aesthetics, economy, recreation and environmental support, which made the landscape value types more comprehensive and universal [23]. In recent years, [PERSON] et al. discussed the suitability of the spatial layout of two kinds of motor vehicle tourism projects in Mt. Hood National Forest Park and evaluated the management departments' rationality of the tourism planning of the space [24].  
For the value types used by the Jinan Iron and Steel Group's public participation from the Brownfield Redevelopment Research Institute, reference is made to [PERSON]'s classification of landscape values [23]. Although the classification has certain universality, some types are not suitable for the Jinan Iron and Steel Group's research. The Jinan Iron and Steel Group's industrial zone is located in the eastern part of Jinan city in Shandong province. The main land types are industrial site protection, urban public space construction, commercial development and residential land. According to the actual situation in this area and the evaluation and classification of industrial heritage value in combination with the \"Nizhny Tagil Charter\" [25], the value selected in this study includes six types of value. The historical value, cultural value and artistic value are considered at the level of site protection, and the social value and environmental consideration and leisure value are considered at the level of public demand. It basically covers the value composition of the main industrial sites in the research area. According to the \"Nizhny Tagil Charter\" [25], \"Wuxi Suggestion\" [26] and\"Hangzhou Consensus\" [27], the detailed criteria and basis is designed for this research (see Table 1). The contents of the survey are mainly used to explain the distribution characteristics of the redevelopment value of the brownfield land.