Spatial Distributions of Yield Gaps and Production Increase Potentials of Spring Wheat and Highland Barley in the Qinghai-Tibet Plateau
文献类型：期刊论文
| 作者 | Zhang, Zemin1,4; Lu, Changhe3,5; Guan, Xiao1,4 |
| 刊名 | LAND
 |
| 出版日期 | 2023-08-01 |
| 卷号 | 12期号:8页码:1555 |
| 关键词 | food security WOFOST model production increase potential Qinghai-Tibet Plateau |
| DOI | 10.3390/land12081555 |
| 文献子类 | Article |
| 英文摘要 | Low grain yield caused by high altitude; cold climate; small, cultivated land area, and poor soil fertility is the critical factor posing a potential risk to local food security in the Qinghai-Tibet Plateau (QTP). Analyzing spatial distribution of the increase potential of grain production in the QTP could be contributable to developing a regional increase in the space of grains to ensure food security. Taking spring wheat and highland barley as objectives, this study simulated the annual potential yields of spring wheat and highland barley at the site level. They estimated their yield gaps and production increase potentials at the regional and county level and mapped their spatial distribution in 2020, based on the methodologies of the literature data collection, using the WOFOST model and GIS analysis. The yield gaps of spring wheat and highland barley were 3.7 and 2.4 t ha(-1) for the whole QTP, accounting for 51.4% and 39.5% of their potential yields, respectively. At the county level, the yield gap ranges of spring wheat and highland barley were 1.5-7.0 t ha(-1) and 0.3-5.9 t ha(-1) across the QTP, respectively. When the yield gap was fully developed, spring wheat and highland barley productions had the potentials of 497.4 and 717.4 Kt for the whole QTP, equal to 118.2% and 75.2% of their current total production, respectively. Spatially, the counties with a large increase potential of spring wheat were mainly distributed in Haidong, Hainan, Xining, Shannan, Nyingchi, and Lhasa, while those with low potential were located in Xigaze and Shannan. Regarding highland barley, Lhasa, Shannan, Xigaze, Yushu, and Hainan had a larger potential to increase. To increase grain production in the QTP, the priority should be given to the shrinkage of the yield gap in the counties with larger potentials to increase, such as Hainan, Shannan, Lhasa, etc., through improving the irrigation rate and fertilizer usage in the farmland. |
| WOS关键词 | CLIMATE-CHANGE ; MAIZE ; WOFOST |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS记录号 | WOS:001055718300001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/200898]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 3.Inst Geog Sci & Nat Resources Res CAS, Beijing 100101, Peoples R China 4.Chinese Res Inst Environm Sci, State Key Lab Environm Protect Reg Ecoproc & Funct, Beijing 100012, Peoples R China 5.Chinese Res Inst Environm Sci, Inst Ecol, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Zemin,Lu, Changhe,Guan, Xiao. Spatial Distributions of Yield Gaps and Production Increase Potentials of Spring Wheat and Highland Barley in the Qinghai-Tibet Plateau[J]. LAND,2023,12(8):1555. |
| APA | Zhang, Zemin,Lu, Changhe,&Guan, Xiao.(2023).Spatial Distributions of Yield Gaps and Production Increase Potentials of Spring Wheat and Highland Barley in the Qinghai-Tibet Plateau.LAND,12(8),1555. |
| MLA | Zhang, Zemin,et al."Spatial Distributions of Yield Gaps and Production Increase Potentials of Spring Wheat and Highland Barley in the Qinghai-Tibet Plateau".LAND 12.8(2023):1555. |
入库方式： OAI收割
来源：地理科学与资源研究所
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