Map analysis of land use and cover changes in the northern part of huabei plain, china
スポンサーリンク
概要
- 論文の詳細を見る
In this paper we tried to identify land use and cover changes in the northern part of Huabei (North China) plain with map analysis and make clear their characteristics. This study area is located at 115 to 117 degrees 30 minutes east longitude and 30 to 40 degrees north latitude, and about 40,000 square kilometres in size. This area includes two large cities of both Beijing and Tianjin. and the mountains and their foots, hills, alluvial fans, diluvial upland, alluvial lowland, and marshes are almost regularly distributed from the west to the east. Based on a series of our analysis and consideration, there were eight main trends in terms of land use and cover changes: the conversion of dry fields into urban land use and paddy fields, the conversion of wasteland into dry fields, grassland and broadleaved forest, the conversion of marshy land into dry fields, the other conversion and no conversion. The most dominant trend was no conversion among them, so that there were not land use and cover changes at all in Huabei plain without metropolitan and mountainous areas. While the conversion of dry fields into either urban land use or paddy fields was more dominant in and around metropolitan areas, the conversion of wasteland into dry fields, grassland and broadleaved forest in mountainous and hilly regions. These types of the conversion have been mainly affected with socio-economic and political conditions which consisted of the institution of landholding system, the practice of agricultural and economic policies, the arrangement of agricultural infrastructure, the reclamation and the improvement of farmland, the innovation of farming technology, the advancement of urbanisation and industrialisation, the increase of population and its internal migration, the changes of eating habits, the utilisation of natural resources, and the level of economic development. In concluding, we should note that the conversion of land use and cover can be explained with some factors in terms of policy, population, urbanisation, technology and resources.
- 首都大学東京の論文
首都大学東京 | 論文
- シンガポールの中国政策
- フランスにおける社会保障給付と内外人平等原則(二・完) : 無拠出給付に焦点をあてて
- フランスにおける社会保障給付と内外人平等原則(一) : 無拠出給付に焦点をあてて(渕倫彦教授退職記念論文集)
- 1999年度社会福祉基礎ゼミ(後期)の評価
- 生活時間と介護の社会化