Optimizing theory and case studies of cultivated slope land in the center of three gorges reservoir area based on patch-scale land evaluation

Yongyan, 王永艳 Wang; Yangbing, 李阳兵 Li; Jingan, 邵景安 Shao; Yuan, 李源 Li; Hua, 杨华 Yang

doi:10.5846/stxb201309292391

Cited by 1 publication

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“…Low and medium mountains dominate the regional landform. In addition, soil erosion in the study area is significant as cultivated land within the watershed is distributed primarily at the 6°-25° slopes, and sloping farmland is over-reclaimed (Wang et al, 2014). To strengthen the ecosystem, many navel orange trees were planted in the low-altitude river valley areas when the Grain for Green Project (GGP) was implemented.…”

Section: Geography Of the Study Regionmentioning

confidence: 99%

Dynamic changes and transitions of agricultural landscape patterns in mountainous areas: A case study from the hinterland of the Three Gorges Reservoir Area

Huang

Ran

et al. 2022

J. Geogr. Sci.

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Analyzing the agricultural landscape patterns in mountainous areas is critical to clarify the dynamic changes and development direction of agricultural landscapes. This also plays a significant role in the rational planning and management of agricultural land. A theoretical framework for agricultural landscape pattern transitions in mountainous areas is proposed to fill the gap of current research with an empirical study in the Caotangxi Watershed, Three Gorges Reservoir Area (TGRA), China. The transition characteristics of agricultural landscape patterns from 2000 to 2018 as represented by sloping farmland, abandoned land, and orchards are analyzed from a holistic-local perspective. The results indicate that the orchards expanded along river valleys, and abandoned land expanded at high elevations, which led to reduced sloping farmland. This phenomenon gives regional landscape differences at the holistic and local levels. Namely, it enhances the region's holistic landscape diversity but causes fragmentation and aggregation of landscape patches in local areas. The agricultural landscape pattern transitions within the farming range in the study area are manifested primarily in four modes: sloping farmland-orchard conversion type (FOCT), comprehensive conversion type (CCT), partially abandoned type (PAT), and wholly abandoned type (WAT). Each transition mode reveals different development stages of the mountainous agricultural landscape patterns. In general, the agricultural landscape pattern transition is driven by socioeconomic factors in mountainous areas of the TGRA and is bidirectional. This attribute is expressed as the transition from the traditional grain-planting landscape with an even distribution to the eco-economic win-win orchard in valleys and transitions from sloping farmland to abandoned land in high-elevation areas. Overall, the results of this study reveal the uniqueness of agricultural landscape pattern evolutions in China's mountainous areas in recent

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Section: Geography Of the Study Regionmentioning

confidence: 99%