Application of Lotus in Canal Wetland Landscape Area

The project of "Integration and Application of Lotus Opening Techniques in Zaozhuang Wetland Landscape Areas" was briefed, role and application of lotus in ecological restoration and protection of canal wetland park, maintaining ecological balance of canal wetland, protecting ecological functions of canal wetland, guaranteeing water quality of the canal and biodiversity of canal wetland, and promoting sustainable development of the ecosystem.

Landscape ecological assessment and eco-tourism development in the South Dongting Lake Wetland, China

As an important resource and the living environment of mankind, wetland has become gradually a highlight, strongly concerned and intensively studied by scientists and sociologists. The governments in the world and the whole society have been paying more and more attention on it. The Dongting Lake of China is regarded as an internationally important wetland. For a rational development and protection of the wetland, an investigation and studied on its resources and its value to tourism in the South Dongting Lake was conducted, to create an assessment system of the ecological landscapes, and to evaluate qualitatively and quantitatively the value of wetland landscape to the eco-tourism. The results showed that the scenic value of the South Dongting Lake Wetland satisfied the criterion of AAAA grade of China national scenic attraction. The eco-tourism value of the landscape cultures in the South Dongting Lake Wetland was discussed with emphasis. It were formulated that a principle and frame of sustainable exploitation of the wetland landscapes and it was proposed as well that establishing a Wetland Park and developing eco-tourism in the South Dongting Lake. Wetland is a fragile ecosystem with low resistance to the impact of the exploitation. Thus, we must pay intensively attention to the influence of exploitation on the landscape, take the ecological risk in account to employ a right countermeasure and avoid the negative affection.

Changes of wetland landscape patterns in Dadu River catchment from 1985 to 2000, China

Based on the interpretation and vector processing of remote sensing images in 1985 and 2000, the spatial changes of wetland landscape patterns in Dadu River catchment in the last two decades were studied using spatial analysis method. Supported by Apack soft-ware, the indices of wetland landscape pattern were calculated, and the information entropy （IE） was also introduced to show the changes of wetland landscape information. Results showed that wetland landscape in this region was characteristic of patch-corridor-matrix configuration and dominantly consisted of natural wetlands. Landscape patterns changed a little with low fragment and showed concentrated distribution with partial scattered distribution during the period from 1985 to 2000. The values of patch density and convergence index kept stable, and the values of diversity, evenness indices decrease, while dominance and and IE showed a slight fractal dimension indices were increased. All types of wetland landscapes had higher adjacency probabilities with grassland landscape in 1985 and 2000, and there was extremely weak hydrological link and large spatial gap among river, glacier, reservoir and pond wetlands due to low adjacency matrix values. Since their cumulative contribution exceeded 81% through the PCA analysis, the agriculture activities would be the main driving force to the landscape changes during the past 15 years.

Progress in Research of Chinese Wetland Parks

There has been a rapid development in the construction of wetland parks in China in recent years.This paper discussed the progress in the research of Chinese wetland parks that covered the aspects of wetland resources,landscape and environment.The function of wetland parks,the evaluation of landscape and the exploiting of resources;the landscape concept and landscape planning and design;the plant environment,the water environment and the recreation environment were all reviewed.The research of Chinese wetland parks started later but developed rapidly,having remarkable achievements in practice and functional studies,and there are still some shortcomings in the researches to be improved.At last,the key points which should be researched urgently in the future were discussed.

Vertical characteristics of the Hani terrace paddyfield ecosystem in Yunnan,China

The Hani terrace paddyfield in Yunnan Province,China is categorized as a‘constructed wetland’under the Lamsar Convention classification.The Hani terrace paddyfield ranges from an altitude of 144 to 2000 m above sea level(ASL)in the southern slopes of the Ailao Mountains,angling down at a range of 15°to 75°.In this study,we investigated the ecosystem of the terrace paddyfields in the Mengpin and Quanfuzhuang administrative villages located at the center of the cultural heritage conservation district in the Hani terrace paddy-field.The Hani terrace paddyfield ecosystem structure is"forest-village-terrace paddyfield-river"in the order of descending altitude.Soil and water samples were sequen-tially taken from forests,villages and the terrace paddy-fields to be able to study the vertical characteristics of Hani’s terrace paddyfields.PO_(4)-P and NH_(3)-N in water were measured to test for water contamination.Seven soil nutrient factors were tested,including organic material(OM),char and nitrogen ratio(C/N),pH,total nitrogen(TN),total phosphorus(TP),available phosphorus(AP),and available potassium(AK).Soil quality was also eval-uated using the characteristics of the soil nutrient factors.Vertical changes in the landscape,wetland types,wetland plants,hydrology and soil nutrients were characterized.Results showed that:(1)Hani’s terrace paddyfield can be divided into five types of wetlands;the rice varieties and cultivation patterns vary in each type of wetland.(2)Hani’s terrace paddyfield has a great capacity for water conservation and a strong ability to purify contaminants.The impoundage of Hani’s terrace paddyfield is about 5050 m^(3)/hm^(2).Contaminants in the terrace paddyfield soils decrease exponentially with the decline in altitude.(3)Comparison of soil quality in five different land use types indicates decreasing soil quality from forest to terrace land to terrace paddyfield to water source.Except for headwater soil,single factors such as OM,TN and TP,and the comprehensive soil quality in individual sampling zones tend to increase with altitude elevation.Comprehensive soil quality in the Quanfuzhuang sampling zone is better than in the Mengpin sampling zone.Finally,a comparison of Hani’s terrace paddyfield with plain paddyfields and natural wetlands highlighted the vertical characteristics of Hani’s terrace paddyfield.