Mapping Highland Barley on the Qinghai–Tibet Combing Landsat OLI Data and Object-Oriented Classification Method

Weidong Ma, Wei Jia, Peng Su, Xingyun Feng, Fenggui Liu and Jing’ai Wang
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Weidong Ma: School of Geographical Science, Qinghai Normal University, Xining 810008, China
Wei Jia: School of Geographical Science, Qinghai Normal University, Xining 810008, China
Peng Su: School of Geographical Science, Qinghai Normal University, Xining 810008, China
Xingyun Feng: Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
Fenggui Liu: School of Geographical Science, Qinghai Normal University, Xining 810008, China
Jing’ai Wang: Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China

Land, 2021, vol. 10, issue 10, 1-15

Abstract: In this paper, we use the extraction method of multi-factors fusion to extract the Highland barley cultivation area on Qinghai–Tibet Plateau. The study results indicate that: (1) the method (extracting through multi-factors fusion) is efficient during the extracting process and is highly accurate in extraction results. This extraction scheme allows for not only the spatial heterogeneity of different physical geographic units, but also the impact of multi-factors on crop cultivation; (2) according to our research, the total Highland barley cultivation area on Qinghai–Tibet Plateau is about 2.74 × 10 5 ha. Based on the statistics, we draw the first distribution map of the Highland barley cultivation area on Qinghai–Tibet Plateau, which upgrades its spatial distribution pattern from administrative unit to patch unit; (3) Highland barley in various divisions has a distinct spatial heterogeneity in elevation. On the whole, the Highland barley on the plateau is planted at an elevation of 2500–4500 m, up to 5200 m. Due to the impact of topography diversity, temperature, moisture, light, arable land and irrigation conditions, its cultivation area at the same elevation varies in different divisions.

Keywords: Highland barley; Qinghai–Tibet Plateau; cultivation area extraction; object-oriented extraction method; spatial distribution of Highland barley (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:gam:jlands:v:10:y:2021:i:10:p:1022-:d:646120

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