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Eco-tour design
In related research, mentioned that wireless underground sensor network (WUSN) faces the problem of wireless underground communication (WUC), which greatly attenuates ground signals. Wireless sensor network unit includes data acquisition unit, data transmission unit, data processing unit, and energy supply unit. At the end of it is a sensor that can sense and inspect the external world. His sensors communicate wirelessly. From this, a WUSN path loss for precision agriculture is proposed, called WUSN-PLM. To achieve this, the proposed model is based on an accurate prediction of the complex permittivity (CDC). Martin et al. (2021) proposed an algorithm to map direct normal irradiance (DNI) in thermal solar power plants using a mobile robotic sensor network (RSN). The algorithm selects measurement points and assigns RSN accordingly for dynamic estimation of DNI. Sensor network realizes three functions of data acquisition, processing and transmission. Together with communication technology and computer technology, it constitutes the three pillars of information technology. The performance of the algorithm is evaluated using a generic thermal solar power plant with a fleet as a simulated case study.
Based on sensor network technology, this paper analyzes and studies the impact of ecotourism design on plant protection. This paper first introduces the meaning of ecotourism, and analyzes the four principles of ecological planning, namely, the principle of ecological protection, the principle of overall optimization, the principle of adapting to local conditions, and the principle of landscape heterogeneity. The impact of water bodies, soil, plants, and wild animals; then, the data processing technology is analyzed, the ecological environment monitoring system and the ecotourism resource evaluation system are established, and the comprehensive ecological characteristics are analyzed. Note that For the development and ecological protection of tourism resources, combined with the comprehensive improvement of key river basins and regional environment, the environmental management of tourist areas has been strengthened, the environmental impact assessment has been carried out for the planning, development and construction projects of some tourist areas, the pollution prevention and control efforts have been strengthened, and a number of polluting enterprises in scenic tourist areas have been shut down, relocated and treated within a time limit
Design research
The meaning of ecotourism
The meaning of ecotourism has been constantly changing, and the process of changing the definition of forest park is similar, but the emphasis is still different. Tourism, with distinctive ecological environment as its main landscape, takes sustainable development as the concept, takes the protection of ecological environment as the premise, takes the harmonious development between man and nature as the criterion, and relies on a good natural ecological environment and a unique human ecosystem. The key points include ecotourism tourist motivation, ecotourism resource level, socioeconomic capacity of the region, and ecological capacity of forest parks. Because ecotourism is different from other forms of tourism, it appeared in a later period, so it is not very familiar to the public, and it is easy to be confused with other concepts such as mass tourism, nature tourism, and sustainable development tourism that have appeared in research for a long time
Distinguishing analysis of similar concepts and categories:
One is the difference between ecotourism and mass tourism. Compared with ecotourism, mass tourism emerged earlier, and ecotourism is a derivative of mass tourism. Because mass tourism is an early concept and form of tourism, its connotation does not include the protection of natural environment and ecological resources, the threshold for development and introduction is low, and it is easy to develop and implement, but there are also problems of damage and negative impact on forest resources. The first meaning of mass tourism refers to that the range of participants in tourism activities has been extended to ordinary working people. The second meaning is that modern tourism activities began to form a mass tourism model represented by organized group package tourism, and formed a dominant tourism form among the general public. In terms of planning management, development goals, and stakeholders, ecotourism prioritizes resource protection and avoids the sacrifice of forest resources. Therefore, it is quite different from mass tourism.
The second is the difference between ecotourism and nature tourism. The difference between the two is small, the main reason is that both rely on natural resources and are closely related to animal and plant resources, as well as physical resources such as mountains and rivers. Natural tourism takes natural resources as the core of development power. Compared with mass tourism, it is more inclined to be close to natural resources, but it also lacks the popularization of environmental protection awareness. Therefore, tourism activities will still have an impact on natural resources. On the basis of natural tourism, ecotourism emphasizes the protection of the natural environment and ecological resources, from people-oriented to ecological resources-oriented, and realizes the value of ecotourism through the interaction between people and ecological resources in the natural environment. The basic principles of people-oriented management include: paying attention to people’s needs, encouraging employees, cultivating employees, and people-centered organization design.
Among these three tourism concepts, the origin of sustainable tourism comes from ecotourism. From the perspective of sustainable development, sustainable tourism is a persistent and continuous tourism behavior. The difference between sustainable development tourism and ecotourism is that sustainable development tourism contains more abundant concepts. There are various forms and processes of sustainable development tourism, and it is not limited to ecotourism. The main connotation of sustainable tourism includes improving people’s understanding of the environmental and economic impact of tourism, strengthening people’s ecological awareness, promoting the fair development of tourism, improving the quality of life in tourism reception areas, providing high-quality tourism services to tourists, and protecting the environmental quality on which future tourism development depends.
Principles of ecological planning
Principles of ecological protection
The overall optimization principle
The principle of overall optimization should be considered, so that the internal functional division of the forest park can be adapted to the surrounding environment, and the symbiosis and prosperity of the forest park and the surrounding environment should be ensured through overall protection and system optimization. The attributes and functional properties of each component in the park are different, but the overall style and form should be unified, and the overall characteristics and image characteristics of the forest park should be maximized through analysis, and each element must be balanced in the ecological environment. We can’t ignore one and lose the other, take the overall optimization as an important organic part of ecotourism, and strive to create an ecologically harmonious forest ecosystem.
The principle of adjusting measures to local conditions
When planning and designing suburban forests, it is necessary to respect the status quo of the natural, cultural and economic conditions of the region, and carry out practical designs based on research and analysis of superior planning, so as to highlight the characteristics of suburban forest parks. It is necessary to focus on ecological conservation and cultural protection, and design various places for forest tours, popular science education, and outdoor recreation according to local conditions. The construction of suburban forest parks is to protect the original ecological environment and develop its unique landscape on this basis. Select native plants, give full play to climatic characteristics, properly use exotic plants and cultivate new high-quality tree species to form a multi-layer mixed structure of trees, shrubs, grasses, and ground cover. Create infrastructures such as water landscapes, buildings, and sketches that are rich in local characteristics and forest park orientation, so that various landscape spaces can cooperate with each other to form a forest tourism environment with changing scenery and increase the fun of the tour. The economic characteristics of suburban forestry include the duality of suburban forestry, the diversity of suburban forestry production, and the economy of suburban forestry. Among them, the economy of suburban forestry is reflected as follows: on the one hand, facing the vast cities, suburban forestry has fast information, wide product sales and broad market prospects; On the other hand, the suburban forestry cannot be completed like the urban garden department, and the construction funds are allocated by the state to solve the construction of suburban forestry.
The principle of landscape heterogeneity
Landscape heterogeneity refers to the variability of landscape elements in the landscape system, which is beneficial to the division of the spatial pattern of the ecological environment and to improve patch heterogeneity and complexity. The degree of landscape heterogeneity is related to the biodiversity of the landscape. In the construction, the existing landscape heterogeneity should be used and strengthened, the vertical landscape design should be enriched, the aquatic plant habitat system should be established, and the ecological balance should be maintained. Strengthen the protection of ecologically sensitive areas, provide a heterogeneous living environment for the creatures in the park, strengthen the construction of landscape heterogeneity, and create a heterogeneous tourism space for tourists.
The impact of tourism on the ecological environment of forest parks
The impact of tourism activities on the ecological environment is usually reflected in specific locations in tourist areas. Because the locations of natural landscapes and cultural attractions that attract tourists are relatively fixed, they account for a small proportion of the total area. Among them, the impact of tourism activities on vegetation and soil is relatively concentrated, which are fixed components of the ecosystem, while the impact on water bodies and wild animals is relatively scattered .
Impact on water bodies
The impact of tourism activities on water bodies is mainly reflected in the quality of water quality, such as: eutrophication of water bodies, discarding of domestic waste, mass reproduction of planktonic algae, and water pollution caused by discarded suspended solids. Water pollution will directly affect the death and accumulation of aquatic animals and plants. The accumulation of pollutants causes harmful gases to be produced in water bodies. The human excrement produced by the residents living in the forest park also greatly pollutes the water quality, and the hotels, shopping streets, restaurants and other tourist service places opened near the water resources will also produce non-degradable waste when entertaining tourists. It takes a long time to purify the wastes to remove the pollution. If these pollutants are not treated scientifically and properly, it will cause water pollution in the forest park and surrounding water bodies. In the surface fresh water system, phosphate is usually the limiting factor of plant growth, while in the seawater system, ammonia nitrogen and nitrate are often the limiting factors of plant growth and total production. The substances that lead to eutrophication are often the nutrients with limited content in these water systems. Accordingly, the prevention and control measures include controlling the input of exogenous nutrients and reducing the load of endogenous nutrients.
Although the water body has a self-purification function and has a certain ability to withstand external influences, the pollution caused by the short-term is not significant, but after a long period of time, when the pollutants accumulate to a certain level, the problem will become prominent. The aquatic ecosystem has a dynamic equilibrium system, and usually all kinds of organisms in the aquatic ecological environment are in the trend of mutual balance. However, when various tourism activities follow, the water ecological balance will be broken, and the linkage of the entire ecological chain will begin to fail, which will reduce the stable development of aquatic organisms and the protection of diversity, will cause more serious ecological damage.
Effects on soil and plants
Because the growth of vegetation is inseparable from the soil, tourism activities, especially the impact of trampling on the soil, will indirectly affect the growth of vegetation. Vehicles roll on the soil, causing the soil to be compacted, or tourists trampling on the lawn, causing damage to the vegetation surface, severe surface exposure and serious soil erosion, which affect the growth and vitality of trees, which in turn has a series of cyclic effects on soil and vegetation. It is also related to the location of tourist routes and scenic spots. For scenic spots that are used more frequently, the scope of influence will expand with the extension of usage time and the increase of tourists’ demand for space.
The most direct consequences of tourism activities on soil and plants are: the reduction of surface vegetation coverage and the reduction of species diversity, which in the long run will affect the ecosystem of suburban forest parks.
Impact on wild animals
Tourism activities create a stressful environment for animals, and noise pollution from development and tourism activities has the greatest impact on wildlife. When animals live in an environment that exceeds the normal volume for a long time, they will become more and more timid and unresponsive. When encountering a moving vehicle or an advancing ship, they cannot avoid danger in time, resulting in an increase in accidental mortality, and even put some endangered animals on the verge of extinction. The trampling of natural ground cover by tourists and the uncontrolled picking of flowers and fruits of plants will also have a negative impact on the animal habitat in the forest park, which limits the living space and activity range of animals to a large extent. At the same time, hunting and hunting activities have a great impact on wild animals. The endless hunting activities of humans have led to a sharp decrease in the number of wild animals. The destruction of the overall ecological environment also has a certain impact on the number of wild insects
Algorithm research
After the forest data collection is completed through the image, according to the characteristics of the Rikola hyperspectral remote control data, on the basis of completing the initial quality assessment of the image, the hyperspectral image is reproduced in the system and process. Compared with the traditional low spectral resolution remote sensing technology, hyperspectral remote sensing provides a wider application in earth observation and environmental investigation, which is mainly reflected in the following aspects: the resolution and recognition ability of ground objects is greatly improved, the imaging channel is greatly increased, and the influence of other interference factors is largely suppressed in the spectral space.
System calibration
In the process of acquiring hyperspectral images by the UAV platform, there will inevitably be systematic errors due to the limitations of the instrument itself and the measurement method, and such errors need to be corrected.
Vegetation hyperspectral images represent ground object information by pixel brightness value (DN value), but due to the influence of systematic errors, DN value cannot truly reflect the spectral properties of ground objects, and it is necessary to use measurement information representing specific signals obtained during the testing process. Convert the DN value of the original image to the reflectivity of ground objects, the formula is as (1).
ρt=DNt−DN1DN2−DN1(ρ2−ρ1)+ρ1(1)ρt=DNt-DN1DN2-DN1(ρ2-ρ1)+ρ1(1)
In the formula, ρt and DNt are the reflectivity and DN value of the original image target pixel, respectively, ρ1 and ρ2 are the reflectivity of different calibration oil cloths, respectively, DN1 and DN2 are the DN values of different calibration oil cloths, respectively. The main application of traditional imaging remote sensing technology is qualitative analysis, and the accuracy of some quantitative analysis results is not ideal. This is obviously due to the limitations of the spectrum and spatial resolution of the imaging sensor, the interference of the atmosphere and soil background, etc., which greatly suppresses the influence of other interference factors in the spectral space, which is of great help to improve the accuracy of quantitative analysis results.
Post-processing correction
The UAV images obtained by the frame-based imaging method in the flight experiment in this study are affected by factors such as the imaging principle and the environment. There are subtle differences in position and attitude among the 45-band images, resulting in the generated hyperspectral cubes with different bands in each band. Cannot completely overlap, we used the Coregister folder tool of Pix4D software for band registration. The time for a drone to fly once is about 20–30 min. Affected by changes in sunlight conditions, there will be gradient differences in the radiance between different flight zones, and the image will often show uneven color and brightness. Using equations (2) and (3) can effectively correct the irradiance to the normal level.
Among them: Ljc(λ)at_sensor represents the image after irradiance consistency correction; Ljc(λ)at_sensor represents the jth original image; Cj(λ) represents the multiplicative correction factor of j; Ej(λ) represents the record of j Irradiance value; Cref(λ) represents the irradiance value of the reference image. Note that image gradient can regard image as a two-dimensional discrete function, and image gradient is actually the derivation of this two-dimensional discrete function. Image edge is generally realized by gradient operation of image.
Experimental study
Data processing technology
Using ArcGIS and ENVI software to preprocess the collected basic data, the main technical tools involved are as follows:
Image mosaic
Image mosaicking is a tool for splicing multiple adjacent image maps into a large-scale image with spatial connection due to the limitation of the area of remote sensing image maps. The methods of cutting lines and feathering are often used for boundary processing. After multiple adjacent images across the state, the images need to be stitched together using the mosaic tool. The whole process of image mosaic technology includes image preprocessing, image registration, establishment of transformation model, unified coordinate transformation, fusion, and reconstruction.
Image cropping
Due to the difference between the directly acquired data space range and the actual range of the research object, when conducting regional research, image cropping is often used to extract the specified range of the original image. This paper mainly uses the mask extraction tool to extract various types of data within the research area data, so that the spatial extent of different data layers after processing is consistent.
Resampling
Resampling is the use of ArcGIS to process existing raster data to convert its resolution to a specified size. Since the delineation of ecological space involves a lot of index data, it is necessary to use the resampling tool in the data management tool to unify it into a grid with a resolution of 100 m × 100 m, and then perform overlay calculation.
Reclassification
Reclassification is to reclassify and assign values according to the required sequence according to the size of the original data values, so as to obtain a new set of data. Cover the original values of indicators, etc., and use the reclassification in the spatial analysis module to reclassify the indicator data interval and assign sensitive values.
Neighborhood analysis
In Figure 1, re-classification is performed according to the size of the original value, the data set and the original value are obtained, and the re-classification in the spatial analysis module is used to re classify the index data interval and allocate the sensitive value. Since the prior art cannot directly obtain the topographic relief related to the topographic factors, it is necessary to select focus statistics in the neighborhood analysis module of ArcGIS spatial analysis through DEM elevation data, and select 3 × 3 pixels to extract the maximum and minimum values. Raster calculation. There are many forms of data organization and expression of digital elevation model, including regular rectangular grid and irregular triangular grid, which are commonly used in land use engineering.
Figure 1. Ecological environment monitoring system diagram.
Grid calculation
Using the grid calculator, according to the evaluation model formula of ecological space delineation, the multi-raster layer data is substituted and the superposition operation is performed to obtain the spatial distribution relationship between the evaluation factors.
Fuzzy classification
In the evaluation of the importance of ecological service functions, the evaluation results of each subsystem need to be normalized. Select the fuzzy classification in the superposition analysis, input the original evaluation value, select the classification value type as a linear function, and assign the data membership between 0 and 1. The core of fuzzy set is the determination of membership function, which has a great impact on the application effect of fuzzy set. The process of determining the membership function is closely related to the practical application background, and there is no general method.
Interpolation analysis
Interpolation analysis is by inputting coordinate points with specific values, and using kriging interpolation or inverse distance weighting (IDW) in the interpolation analysis of the spatial analysis module to assign spatial evolution trends to point coordinate values. Due to the spatial evolution of meteorological station data, it is manifested as the spatial distribution trend of meteorological data such as rainfall and wind speed.
Ecological environment monitoring system
The construction of the ecological environment monitoring system can comprehensively understand the resources of suburban forest parks, promote the integrity of forest eco-tourism resources, enable forest tourism resources to achieve the most scientific and effective development and utilization, convert various benefits into value, and improve the forest resources. Quality and value of park ecotourism resources.
The main function of the ecological environment monitoring and evaluation system is to confirm the ecological level of the suburban forest park, reduce the adverse impact, and propose reasonable ecological protection measures. Take the ecological environment impact assessment work as a routine work and put it into the various links of the ecological tourism development and construction of suburban forest parks. The research contents mainly include: ecological environment assessment and environmental impact assessment reflecting changes in environmental quality; graded assessment of scenic resource quality and put forward a scientific and effective resource development model. Monitoring should not only ensure systematization and timeliness, but also clearly reflect the existing problems in suburban forest parks, so that effective protection measures can be taken more quickly, so as to continuously optimize the planning and construction management of suburban forest parks, and solve the problems of tourism resources and environment protection issues.
