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공간단위 수정가능성 문제(MAUP)를 고려한 빈집 발생지역의 특성 분석 - 부산광역시 원도심 일대를 대상으로 -
설유정,김지윤,김호용,SEOL, Yu-Jeong,KIM, Ji-Yun,KIM, Ho-Yong 한국지리정보학회 2022 한국지리정보학회지 Vol.25 No.1
Recently, the rapid increase in vacant houses in urban areas has caused various problems such as worsening urban landscape, causing safety accidents, crime accidents, and hygiene problems. According to the Statistics Korea Future Population Estimation results, the growth rate of Korean population and households is expected to continue to decrease, which is likely to lead to an increase in the occurrence of vacant houses. If the problem caused by the occurrence of vacant houses is neglected, it causes not only a physical decline such as a deterioration of the residential environment but also a social and economic decline. In order to solve this problem, it is necessary to grasp the spatial distribution characteristics of vacant houses at the local level considering the existence of regional characteristics and spatial influence. Therefore, in this study, in order to measure global spatial autocorrelation, the analysis was conducted centering on the old downtown area of Busan, where there are many vacant houses through Moran's I and Geographically Weighted Regression(GWR). In addition, the distribution of vacant houses in different spatial units in Eup_Myeon_Dong and Census was analyzed to evaluate the possibility of Modifiable Areal Unit Problem(MAUP), which differ in the results of spatial analysis as the spatial analysis units change. As a result of the analysis, the occurrence of vacant houses by Eup_Myeon_Dong in the old downtown area of Busan had spatial heterogeneity, and the spatial analysis results of vacant houses were different as the spatial analysis units were different. Accordingly, in order to understand the exact distribution characteristics of vacant house occurrence, spatial dimensions using the GWR model should be considered, and it is suggested that consideration of the MAUP is necessary.
피트모스 혼합 상토를 이용한 배추 육묘용 상토의 최적기준 설정
이현행(Hyun-Haeng Lee),하상건(Sang-Keon Ha),김보현(Bo-Hyun Kim),설유정(Yu-Jeong Seol),김계훈(Kye-Hoon Kim) 한국원예학회 2006 원예과학기술지 Vol.24 No.3
본 실험은 배추의 생육에 가장 적합한 피트모스 혼합 상토를 개발하고자 실시하였다. 상토는 육묘용 상토 재료로 많이 이용하고 있는 유기성 재료(피트모스, 훈탄)와 무기성 재료(질석, 펄라이트, 제올라이트)를 혼합하여 배추를 육묘 하였다. 상토 분석은 CEN 분석법에 의해 분석하였고 배추 생육은 파종 후 35일이 되었을 때 생체중, 엽장, 엽폭, 엽면적, 근장, 건물중, T/R(지상부 건물중/지하부 건물중)률을 조사하여 배추 육묘에 가장 적합한 상토를 선발하였다. 배추의 생육은 처리에 따라 뚜렷한 차이를 나타내지 않았으나 일반적으로 처리구 PVSZ 7에서 다소 양호한 생육을 보였고 특히 지하부 건물중은 PVSZ 7에서 가장 높았으며 T/R률은 낮은 수치를 보여 지상부와 함께 지하부도 균형 있게 생육 했음을 알 수 있다. 육묘 생육에 적절한 피트모스 상토의 공극률, 액상, 기상은 각각의 생장 요인에 따라 다르게 나타났고 적정 물리성 상토 범위는 식물 생육에 있어 판단 기준이 되는 건물중이 가장 높았던 범위로 하였다. 위의 결과를 종합해 보면 배추의 생육에 적합한 피트모스 혼합 상토의 물리성은 공극률이 92~95%, 액상 52~71%, 기상 21~41%, 유효수분 14~37%, 완충수분은 0.6~13%로 나타냈다. This experiment was conducted to investigate optimum physical conditions of peatmoss-based substrates for Chinese cabbage plug seedlings. Peatmoss substrates prepared by mixing peatmoss with vermiculite, perlite, rice hull and zeolite at various mixing ratios were used for growing Chinese cabbage plug seedlings. The physical and chemical properties of the peatmoss substrate were analyzed by the CEN (European committee for standardization) method. Fresh and dry weights (shoot, root), leaf length, leaf width, leaf area, root length, and T/R ratio (dry shoot weight/dry root weight ratio) were determined at 35 days after sowing. The overall results showed that the PVSZ 7 substrate (peatmoss:vermiculite:zeolite=7:2.9:0.1) could be used for production of plug seedlings judging from dry weight and T/R ratio of the plug seedlings. Optimal ranges of physical properties were proposed based on dry matter weight which is the most important assessment criteria of plant growth. Total pore space, water volume, air volume, easily available water content, and water buffering capacity of the peatmoss substrate that showed the best growth of plug seedling were in the range of 92~95%, 51~71%, 21~41%, 14~37%, and 0.6~13%, respectively.