青藏高原拉萨河流域冲积扇地农业适宜性评价与推广

Q2 Agricultural and Biological Sciences

Agriculture Pub Date : 2024-07-24 DOI:10.3390/agriculture14081214

Tongde Chen, Juying Jiao, Lingling Wang, Wei Wei, Chunjing Zhao, Shuwei Wei

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引用次数: 0

摘要

冲积扇已被证明在青藏高原具有巨大的利用潜力，但其在多大程度上适合农业发展却不得而知。因此，本文以拉萨河流域冲积扇为例，建立了农业用地适宜性评价体系（LSA）。采用主成分分析法（PCA）和穷举法（EM）定义了最小数据集（MDS），然后利用土地适宜性综合指数对拉萨河流域冲积扇的土地适宜性进行了评价。通过情景模拟，采用了两种科学方法来改善 LSA。结果表明，与 PCA 相比，EA 评估的 MDS 更具代表性。具有适宜坡度的冲积扇主要分布在拉萨河中下游。发展设施农业和修复通往冲积扇的道路是改善 LSA 的有效方法，可将适宜等级面积分别从 58.62% 增加到 97.82% 和 63.85%。因此，土地资源局的大部分冲积扇都适合发展农业，在人类活动的影响下，将有更多的冲积扇适合发展农业。我们的研究为高寒地区土地的可持续发展提供了科学方法。

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Evaluation and Promotion of Alluvial Fan Land Suitability for Agriculture in the Lhasa River Basin, Qinghai–Tibet Plateau

Alluvial fans have been proven to have great utilisation potential in QTP, but to what extent they are suitable for agricultural development is unknown. Therefore, using the alluvial fan in the Lhasa River Basin (LRB) as a case study, this paper established an evaluation system of land suitability for agriculture (LSA). Principal component analysis (PCA) and the exhaustive method (EM) were used to define the minimum dataset (MDS) and then the LSA of the alluvial fan in the LRB was evaluated using a comprehensive index of LSA. Two scientific approaches were implemented to improve the LSA using a scenario simulation. The results showed that the MDS assessed by the EA was more representative compared to the PCA. Alluvial fans with suitable grades are mainly distributed in the Lhasa River’s middle and lower reaches. Developing facility agriculture and repairing roads accessing the alluvial fans are effective approaches to improve the LSA, which can increase the suitable-grade area from 58.62% to 97.82% and 63.85%, respectively. Therefore, most alluvial fans in the LRB are suitable for developing agriculture, and under the influence of human activities, there will be more alluvial fans suitable for developing agriculture. Our research provides scientific methods for the sustainable development of land in alpine regions.

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来源期刊

Agriculture Agricultural and Biological Sciences-Horticulture

CiteScore

1.90

自引率

0.00%

发文量

审稿时长

11 weeks

期刊介绍： The Agriculture (Poľnohospodárstvo) is a peer-reviewed international journal that publishes mainly original research papers. The journal examines various aspects of research and is devoted to the publication of papers dealing with the following subjects: plant nutrition, protection, breeding, genetics and biotechnology, quality of plant products, grassland, mountain agriculture and environment, soil science and conservation, mechanization and economics of plant production and other spheres of plant science. Journal is published 4 times per year.