Development of Assessment Framework and Investigation of Paddy Water Green Environment using the Proposed Assessment for Rural Houses in Yilan Area

• Main Authors: Huei-Ru Li, 李慧茹
• Other Authors: Howard Hwang
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/71732670570386034504

碩士 === 國立宜蘭大學 === 建築與永續規劃研究所碩士班 === 98 === This research is primarily to explore the water green environment for the rural houses situated in paddies and the “Paddy” will be treated as the matrix for landscape ecology. Whereas, the “rural house and its soil covering area” will be viewed as the patches and the “waterway, the road and ridge of the paddy” as the corridors. This thesis will summarize the planned viewpoints like blue-green network, ecological green island, agricultural land resource, inhabitant space and living land scenery, etc, moreover, will expand them into 8 topics, 14 subtopics and 41 items for assessment purpose so as to establish the assessment configurations for the water green environment surrounding the paddy rural houses. Subjects under survey for this research can be categorized as “rural house with bamboo enclave” and “modern rural house” basing upon the typical rural housing at Yilan. Furthermore, if basing on the space composition, it can be further divided into types like “old fashioned building but still intact”, “new and old hybrid building”, “living space totally covered with soil” and “living space partially covered with soil”. Hence, this research employs the assessment configuration to proceed to current status survey. And the findings are as follow： As for blue and green network, the road section is 90% non-green, and the best green scenario is just two-leveled 3D with 94% in the discontinued vegetation coverage. In the waterways, 81% are non-vegetation with just one-layer 3D greening, and the discontinued vegetation reaches as high as 98%. And 98% of the road is paved with asphalt concrete and edge of the hill is primarily made with materials in concrete and mortar pebbles. 67% of the wall body for the waterway and 61% at the bottom of the canal are primarily made with concrete. Therefore, with the concretization in the road, waterway engineering constructs as well as the paddy ridges in addition to homogenized trending, it is very difficult to constitute as the essences for ecological corridor. As for the ecological green island, 53% outdoor space in the overall averages for rural housing of each type is not green. And the soil covering for the hill slope materials in the modern rural house type is made of 55% concrete and 42% mortar pebbles. And the soil covering pavement is made with 38% in concrete. As for the agricultural land resource, 62% of the rural houses have no neighboring houses. And the soil covering inhabitant type for the modern rural house has 17% of them occurring with fractional paddy syndrome. Rural houses with bamboo enclave were built before the time of agricultural re-planning, and there is no reasonable way to assess whether the building for these houses would cause the fractional paddy syndrome. As for the living space, the BCR (Building Coverage Ratio) for modern rural housing type is considerably low; in addition, each case’s average soil coverage ratio is 5.6 times for those permitted legally. This indicates what the laws and regulations prescribe are greatly different from what the actual living requirement demands. The purpose and type in building a bamboo enclave rural house differ from that of the modern rural house. There are 66% of the bamboo enclave rural houses having over two thirds of the vegetation surrounding. And the modern rural house type has not being reported with a single case which would match to this. According to the survey findings in addition to basing upon the viewpoints in strengthening the tri-living qualities for the paddy, the rural house and water green environment, this research recommends that the cross-sections of the roads as well as the waterways be possessed with linkage functionality to the vegetation greenbelt so as to play the role of ecological corridor amid the paddies. Soil covering at the hillside slope area as well as its pavement should adopt the porous materials so as to promote and elevate the greening opportunities in addition to preserve the water permeable functionality as well as porous environment, which would render the rural houses as the ecological patches. The perimeter of soil covering area around the newly built rural house should link with roads and for those having the neighbors should link to their neighbors so as to lessen the occurrence like paddy fragmentation; this would also maintain the production mechanism for those with good quality paddies. Outdoor empty space vegetation should be managed in a 3D fashion and the vegetation priority should adopt those indigenous to Yilan so as to extend the original and rural scenery of Yilan villages. And the number of high-rise rural houses should be lessened and discouraged so as to alleviate the impacts to rural scenery views.