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- Title
亚热带季风区水稻梯田景观格局及其自然影响因素分异.
- Authors
张兆年; 刘澄静; 角媛梅; 徐秋娥; 张洪森; 陶妍
- Abstract
[Objective] Rice terraces in the subtropical monsoon region of China are representatives of intensive farming in southern mountainous areas, with various ecosystem service functions. Quantifying their landscape pattern and identifying the impact of major natural factors are key to implementing reasonable protection and achieving sustainable regional development. [Method] Based on ArcGIS spatial analysis technology, the rice terraces in Jiabang, Guizhou, Longji, Hunan, Lianhe and Hani, Yunnan, which were located in the subtropical monsoon mountain area, were taken as the research objects to discuss the impact of natural factors such as topography, soil and lithology on the landscape pattern of rice terraces on the basis of their landscape horizontal and vertical pattern analyses. [ Result] The landscape of various terraced fields mainly included forest land, terraced fields, construction land, water body and unused land, among which the distribution area of terraced fields was Hani > Ziquejie > Jiabang > Longji > Llanhe, and all were concentrated in the central region; The landscape of each terraced field showed a clear hierarchical distribution on the vertical gradient, with the terraced field structure accounting for the largest proportion, followed by forest land, and the village being the smallest; Jiabang, Longji, Ziquejie and Lianhe terraces were mainly distributed in the east, southeast, and south slope directions ( > 60% ) with good light and heat conditions at elevations below 1200 meters ( > 80% ) and slopes from 5 to 24 ° ( > 70% ), while Hani terraces were mainly distributed in the northeast, east, southeast, west and northwest directions ( > 60% ) with relatively flat terrain at elevations below 1900 meters ( > 90% ) ; Hani and Ziquejie terraces were mainly composed of gneiss ( 59. 04%) and granite ( 89. 65%) with good water storage capacity, respectively. The combined terraces were mainly composed of rhyolite ( 40. 27%) with medium water retention capacity, while Jiabang and Longji rice terraces were mainly composed of sandstone (79. 84% and 51. 74%) with strong water permeability; Red soil, yellow soil and paddy soil were the main soil types of Hani, Jiabang, Longji, Ziquejie and Lianhe terraced landscape, and 78. 2%, 97. 8%, 71. 63%, 87. 66% and 99. 9% terraced fields were developed in each terraced landscape. [ Conclusion] The study aimed to further explore the main factors affecting the spatial distribution of subtropical monsoon rice terraces and provide important references for the future development, utilization and protection of terraces.
- Subjects
PETROLOGY; TERRACING; SOILS
- Publication
Southwest China Journal of Agricultural Sciences, 2023, Vol 36, Issue 10, p2261
- ISSN
1001-4829
- Publication type
Article
- DOI
10.16213/j.cnki.scjas.2023.10.023