| Analysis of potato climate suitability model and its temporal and spatial variation characteristics in Shigatse, Tibet |
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| DOI：10.7606/j.issn.1000-7601.2023.01.22 |
| Key Words: potato climate suitability temporal and spatial changes model Shigatse region |
| Author Name | Affiliation | | ZHUJIE Sangbu | Meteorological Bureau of Nanmulin County, Shigatse, Tibet 857000, China | | ZHANG Cunjie | National Climate Center, Beijing 100089, China | | WANG Xing | Meteorological Disaster Prevention Technology Center of Tibet Autonomous Region, Lhasa, Tibet 850000, China | | BAI Madeji | Meteorological Bureau of Nanmulin County, Shigatse, Tibet 857000, China | | Nimalamu | Meteorological Bureau of Nanmulin County, Shigatse, Tibet 857000, China |
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| Abstract: |
| Based on the daily meteorological data of seven national meteorological stations in Shigatse from 1980 to 2021, the suitability evaluation models of temperature (T), light (S), water (W) and climate (C) of potato in the plateau were analyzed and constructed, and their spatial and temporal variation characteristics were analyzed. The results showed that the average value of S in Shigatse in recent 42 years was 0.82, showing a weak downward trend year by year. The average values of T, W and C suitability were 0.79, 0.64 and 0.61, respectively, showing an upward trend year by year; The light and heat resources in the whole growth period of potato were in the most reasonable area (S, T≥0.7), meeting the growth and development needs of potato. W was at a low level from sowing to emergence (W=0.62) and from flowering to maturity (W=0.44), which was the main factor restricting the growth and development of potato in Shigatse area. The spatial distribution of T and S were relatively uniform and presented an increasing trend from west to east, from south to middle and from north to middle, while the spatial distribution of W was uneven. Sangzhuzi District in Nanmulin county was a high value area of potato comprehensive climate suitability (C>0.6) and suitable for vigorously developing potato industry. The interannual change and regional characteristics obtained from the daily scale climate suitability evaluation model established in this paper are consistent with the actual situation, providing a basis for understanding the temporal and spatial changes of potato growth and development suitability in Shigatse under climate change. |
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