Ecological Remediation Measures for Non-point Source Pollution Based on Source-Sink Landscape Theory: A Case Study of Huanghou Basin

The growth of society and population has led to a range of water pollution issues.Among these,non-point source pollution assessment and treatment pose a particular challenge due to its formation mechanism.This has become a focal point and challenge in water pollution treatment research.The study area for this research was the Huanghou basin in Guizhou Province,southwest China.The land use type of the basin was analyzed using remote sensing technology,and water quality data was collected by distributing points throughout the basin,based on source-sink landscape theory.The distribution map of the basin’s source-sink landscape and the results of water quality data accurately and efficiently identified the areas with high risk of non-point source pollution in the western and southwestern residential and agricultural areas of the upper basin.Hence,a strategy of“increasing sinks and decreasing sources”was proposed.The strategy was implemented at both macro and micro levels to address non-point source pollution in the basin using ecological remediation techniques.The work to control karst rocky desertification should continue at a macro level.The rocky desertification area in the basin should gradually transform into grassland and forested land,while increasing the overall area of the sink landscape.Ecological restoration techniques,such as slope planting,riparian zone vegetation restoration,increasing plant abundance,and restoring aquatic plants,can effectively control non-point source pollution at the micro level.Compared to traditional control methods,this remediation strategy focuses on source and process control.It is more effective and does not require large-scale water pollution control projects,which can save a lot of environmental control funds and management costs.Therefore,it has greater research significance and application value.

Research Progress of Analysis and Control Technologies against Urban Landscape Water Pollution

The root causes of urban landscape water pollution were analyzed in this study, the bio-ecological restoration technologies combing both exogenous and endogenous pollution control were put forward.

Protection and Utilization of Cultural Landscape in a Forest Park in Ethnic Minority Region ——With a Case of Zhangjiajie

Presently, more and more attention is paid to cultural landscapes by peo-ple at travel ing, especial y for folk culture in ethnic minority regions where rich hu-man landscapes could be ful y made use of to improve landscape quality. In the research, cultural landscapes in Zhangjiajie National Forest Park were surveyed and evaluated to analyze characters of cultural utilization, as wel as problems existing in the Park. In addition, highlights were given to protection on cultural landscapes in a forest park construction, presentation of ethnic minority culture, and ful development of tourism products.

Inheritance and Protection of Native Culture in Campus Landscapes

Significance and development of native culture was introduced, native culture as an important component of regional characteristics faded out gradually in the "cultural blending" of modern society, but the construction of socialist cultures with Chinese characteristics must have traditional Chinese cultures as its foundation. Thus, significance of succeeding and protecting native culture was stressed. Functional, cultural and ecological attributes of campus landscapes were analyzed. Campus as a distribution center of knowledge and consciousness guides the development of social consciousness, and also contributes a lot in succeeding and protecting native cultures, so the construction of campus landscapes is of great significance. Landscape design of the new campus of Sichuan Fine Arts Institute was taken for an example to highlight the expression of native "materials", "things" and "conceptions" in campus landscapes, from the perspective of inheritance and protection of native culture, various disciplines such as cultural studies, ecology and psychology were combined to comprehensively analyze application and protection of native culture in campus landscapes, forecast development trend of campus landscapes, so as to guide future development of campus landscapes theoretically and practically.

Assessing effects of “source-sink” landscape on non-point source pollution based on cell units of a small agricultural catchment

Ascertaining the relationship between "source-sink" landscape and non-point source(NPS) pollution is crucial for reducing NPS pollution, however, it is not easy to realize this target on cell unit scale. To reveal the relationships between "sourcesink" landscape and NPS pollution based on cell units of a small catchment in the Three Gorges Reservoir Region(TGRR), the runoff and nutrient yields were simulated first by rainfall events on a cell unit scale based on the Annualized AGricultural Non-Point Source Pollution Model(AnnAGNPS). Landscape structure and pattern were quantified with "sourcesink" landscape indicators based on cell units including landscape area indices and locationweighted landscape indices. The results showed that:the study case of small Wangjiagou catchment highlighted a good prediction capability of runoff and nutrient export by the AnnAGNPS model. Throughout the catchment, the spatial distribution trends of four location-weighted landscape indices were similar to the trends of simulated total nitrogen(TN) and total phosphorus(TP), which highlighted the importance of spatial arrangement of "source" and "sink" landscape types in a catchment when estimating pollutant loads. Results by Pearson correlation analysis indicated that the location-weighted landscape index provided a more comprehensive account of multiple factors, and can better reflect NPS-related nutrient loss than other landscape indices applied in single-factor analysis. This study provides new findings for applying the "source-sink" landscape indices based on cell units in small catchments to explain the effect of "source-sink" landscape on nutrient export based on cell unit, and helps improve the understanding of the correlation between "source-sink" landscape and NPS pollution.

Authenticity Protection of Agricultural Landscapes in Rural Tourism Development

With the rapid development of the economy, people’s living standards have been improved constantly. As people’s material life has been gradually improved, people pay more attention to the pursuit of high-quality spiritual life, and the flourishing development of rural tourism just meets people’s pursuit about returning to nature that is far away from the hustle and bustle of the city, and about experiencing funny and quiet life in the countryside. The development of rural tourism relies on agricultural landscape resources, and the correct understanding and protection of the original value of agricultural landscape resources can effectively ensure the sustainable use of agricultural landscape resources. If land for agricultural landscape resource is occupied for developing blindly without reasonable planning and construction, it will lead to the distortion of the authentic value of agricultural landscape, which in turn affects the sustainable development of rural tourism.

Landscape Ecology Researches on the Regulation of Non-point Source Pollution in Agroforestry Watershed

Non-point source(NPS) water pollution generated by agricultural production has become a major environmental issue in agroforestry watersheds such as the Three Gorges. Landscape ecology emphasizes the regulation and effect of landscape pattern on material flow, energy flow in the ecological processes. This paper reviewed landscape ecological approaches of controlling non-point source pollution in agroforestry watershed of the Three Gorges from the patch level and landscape level. Stage I: landscape ecological investigation. The investigation is to fi gure out landscape pattern characteristics of the watershed, major causes and key sections of the non-point source pollution, "source" patches and ecological process of non-point source pollution, and the feedback relationship between landscape pattern and non-point source pollution. Stage II: landscape ecological planning. In the patch level, the best management procedures(BMPs) are selected to judge the application effect. In the landscape level, new landscape elements are introduced, "source" and "sink" landscape patch types adjusted, landscape level regulation effect assessed. Stage III: landscape ecological management. Small-watershed landscape ecological construction is carried out from patch level and landscape level, BMPs implemented gradually, landscape ecological planning and management integrated, landscape heterogeneity enhanced, intensity of non-point source pollution controlled effectively to achieve sustainable development of small watersheds.

Selection of Landscape Tree Species of Tolerant to Sulfur Dioxide Pollution in Subtropical China

Sulfur dioxide (SO2) is a major air pollutant, especially in developing countries. Many trees are seriously impaired by SO2, while other species can mitigate air pollution by absorbing this gas. Planting appropriate tree species near industrial complexes is critical for aesthetic value and pollution mitigation. In this study, six landscape tree species typical of a subtropical area were investigated for their tolerance of SO2: Cinnamomum camphora (L.) J. Presl., Ilex rotunda Thunb., Lysidice rhodostegia Hance, Ceiba insignis (Kunth) P. E. Gibbs & Semir, Cassia surattensis Burm. f., and Michelia chapensis Dandy. We measured net photosynthesis rate, stomatal conductance, leaf sulfur content, relative water content, relative proline content, and other parameters under 1.31 mg·m-3 SO2 fumigation for eight days. The results revealed that the six species differed in their biochemical characteristics under SO2 stress. Based on these data, the most appropriate species for planting in SO2 polluted areas was I. rotunda, because it grew normally under SO2 stress and could absorb SO2.

Theories and Methods of Landscape Architecture Heritage Protection

This paper firstly made an overview of foreign and domestic theories and methods of landscape architecture heritage protection.It studied the landscape architecture heritage from policies and regulations,investment management,talent cultivation,and popular science education.Then,it discussed problems of landscape architecture heritage protection in China:lack of legislation,weak awareness of heritage resources,overdevelopment of heritage resources,and vacancy in management and monitoring of heritage resources.Finally,it came up with recommendations that competent authorities of Chinese government should attach greater importance to heritage management,talent cultivation,and fund input,integrate with advanced management methods of developed countries,and exploring a landscape architecture heritage protection and management mode suitable for national conditions of China at levels of thought,methods,and technology.

The Role and Heterogeneity of Visual Pollution on the Quality of Urban Landscape Using GIS;Case Study: Historical Garden in City of Maraqeh

The urban landscape heterogeneity has been influenced by the visual, unpleasant and unacceptable face of which there is no charm in it. The present study is formed according to visual pollution and its impact on the appearance and vitality of a city. Preliminary studies and theoretical studies led to the hypothesis with the following themes: 1) There is relationship between the pollution, heterogeneity and visual disturbances urban landscape and urban vitality;2) Improving the quality, aesthetics and identity of public spaces will increase urban vitality. Therefore, the design process within the theoretical principles, concepts, television and urban landscape, urban art, visual pollution aspects (color, light, and visual symbol) and the quality of urban vitality and explain causal relationships, analytical framework developed and more samples case (garden historic town of Maraqeh1) and the area under study were selected using GIS. After designing the questionnaire to evaluate the objectives, assumptions and questions of research and its analysis, the results indicate that the relationship between visual pollution and urban vitalitys, as well as proving hypotheses and vitality after the final analysis, model was introduced based on the components of comfort visual editing and proposed at three levels: micro, middle and macro for objectives, strategies and policies to regulate visual pollution and improve the aesthetic quality of the environment and the promotion of vitality.

Study on Jinan urban construction planning based on the protection of karst landscape

Study on urban construction planning based on karst landscape protection contributes to sustainable development of urban construction in karst area. Jinan is a city famous for karst spring water. Karst landscape plays a decisive role in urban construction. Through hydrogeological analysis, the distribution characteristics of karst mountain, cave, gully and flat dam in Jinan are analyzed. It is revealed that various karst landforms are involved in the spring circulation process to varying degrees. Some karst landforms have been destroyed in the process of urban construction and the karst landscape has been overexploited resulting in the direct or indirect weakening of spring water recharge and infiltration capacity and the decrease of spring water flow. Through the study of the principle of organic combination of karst landscape and urban construction planning, on the basis of protecting the ecological environment of the south, paying attention to the overall protection of the karst geomorphology system and the principle of accessibility of the karst landscape, the development countermeasures guided by urban planning are put forward based on karst landforms protection. On the basis of fully considering the special karst landform conditions in Jinan, the countermeasures are that the ecological control red line of urban construction planning should be set up based on karst mountains and valleys in southern of Jinan City. It is suggested that the bare carbonate rock continuous mountain foot line in the direct recharge area should be taken as the south control red line of urban development and included in the overall planning. The urban landscape is mainly displayed in the main axis based on karst mountains and springs, constructing East-West Axis-characteristic Landscape Belt along the Wufeng Mountain-Langmao Mountain-Hero Mountain-Qianfo Mountain-Long cave-Panlong cave-Jinping Mountain line and North-South Axis Landscape Belt along the Baotu SpringQianfo Mountain line, Baiquan-Panlong cave line, Baimai spring-Dajian Mountain line. Based on the karst river valleys and the river system, the urban spatial pattern is constructed, forming ecological corridor, restoring infiltration function of river. The form of urban construction should be shaped based on karst landform and the river system. The main form is semi-star like radiation type and the combination of central intensive type and zonal type. Based on the whole protection of karst geomorphology system and the scientific molding of karst landscape, the ecological landscape city with the symbiosis of spring and urban can be built.

Survey and Protection for Geological Heritage Resources of Water Landscape in Yandangshan Global Geopark

The geological heritage resource of water landscape in Yandangshan Global Geopark consists of 5 subclasses and 9 types,which cover more than 20 geological heritage spots.Including Dalongqiu Waterfall that is one of the four most famous waterfalls in China,Yanhu Wetland and Baixi Stream, which are the core of the geopark,By investigating

LANDSCAPE ECOLOGICAL CONSTRUCTION AND BIODIVERSITY PROTECTION

In the 21st century, landscape ecology should be able to design the environmental construction. The landscape ecological construction is to protect biological diversity positively, which follows the theories such as adapting to nature, mutualism and symbiosis, adjusting structure and improving function, controlling parts and adjusting the whole, and other theories of landscape ecology. This paper took humid temperate zones, landscape ecozones etc. as examples to express how to use these theories to carry out landscape ecological construction. The author put forth three points of land ecological construction: protection of rare and endangered organisms; restoration and reconstruction of important ecosystems; protection of community diversity of plant.

Protection and Treatment of Landscape Plant Secondary Disasters (Deicing Agent Damage) Caused by Extreme Weather

Deicing agent is always applied to alleviate urban traffic pressure after snowing in winter,however,such a snow melting agent is extremely harmful for landscape plants.To eliminate or avoid such damages,we have been actively exploring protection and treatment means.By analyzing the protection of landscape plants before using the deicing agent and the treatment after being damaged by the salt,the paper described how landscaping industry of Beijing handled extreme weather and influence of certain urban environment on landscape plants in a high-efficiency and low-cost way,and then figured out the balance point of normal social life and healthy development of ecological environment.

Landscape Design of Water Conservancy Scenic Area Based on Ecological Protection Concept

Targeting at the development needs of ecological cities, the landscape design of water conservancy scenic areas has begun to take the ecological protection concept as the design essence, based on the theory of landscape ecology, ecological restoration and ecological compensation. The principles and methods of ecological design are summarized in this paper to achieve the unity of economic benefits and ecological benefits in water conservancy scenic areas and create a livable environment for cities.

Study on Landscape Pattern Index-based Connectivity Analysis of the Primary Farmland Protection Zones

Farmland and primary farmland protection are important contents of land management and land use planning of China. In the new round of land use planning and database construction, primary farmland protection zones are required to have high integrity and connectivity. Using landscape pattern indexes, the integrity and connectivity of primary farmland protection zones was studied in Licheng District of Jinan City. The results showed that, except patch area standard deviation, the other indexes including average patch area, patch area variation coefficient, patch edge density, largest patch index, and mean euclidean nearest-neighbor, all indicate high connectivity of primary farmland protection zones after layout adjustment. A simple and convenient method for identifying the integrity and connectivity of primary farmland protection zones was supplied.

Landscape Protection Mode of Traditional Villages in Ningbo

The protection of traditional village landscape is of great significance for inheriting traditional culture and keeping nostalgia.Taking the traditional villages in Ningbo as the research object,the mode of landscape protection of traditional villages based on the perspective of regional landscape was discussed.This study not only paid attention to the protection of material landscape,but also emphasized the protection of cultural belief and custom landscape,and transformed the intangible cultural belief and custom heritage into material landscape and it not only paid attention to the landscape protection with clear space mechanism of the clan courtyard,but also innovated the landscape space protection with relatively fuzzy space mechanism of the clan courtyard,and adopted different protection methods according to the clarity degree of the courtyard mechanism.In view of the village market space landscape,not only the single dependent architectural landscape protection was considered,but also the linear space landscape protection was emphasized.The idea and method of protection put forward show the historical existence of the value of ancient villages and better reflect the contemporary significance of "remembering nostalgia".

Protection and Inheritance of Native Culture in the Landscape Design of Characteristic Towns

Chinese culture has a long history. Native culture, as an important part of China's traditional culture heritage, is rich in variety. In characteristic towns, native culture has strong local characteristics, and its protection and heritage has great value. This paper aimed to inherit traditional culture, protect the local characteristics of the towns, endow the town landscape with a unique cultural value, enhance people's cultural cohesion and identity of local culture and create characteristic towns with strong cultural characteristics.

World Environment Day:How textile industry approaching to mitigate environmental pollution

Desertification creeps across the landscape like a silent thief,stealing life and leaving behind a barren wasteland.This year's World Environment Day theme,‘Land Restoration,desertification and drought resilience’,is a stark reminder of the pressing need to heal the wounds we've inflicted on our planet.

Analysis of Settlement Landscapes in Ancient Villages of Anyi County,Jiangxi Province of China

Forms and compositions of landscape elements in traditional spaces such as streets,lanes and plazas in ancient villages of Anyi County were studied.On the basis of investigating and analyzing current situation and problems of these ancient villages,difficulties in the development of ancient villages and improvement of living conditions as well as their contradictions with protection of ancient relics and cultures were explored,and corresponding protection principles and means proposed.It was stressed that the protection of landscape images in ancient villages of Anyi County should follow the principles of "protection first,reasonable development,integrated protection,valuing traditional cultures,encouraging the locals' participation",so as to create ancient villages with sustainable cultural traditions and favorable landscape images.