Cotton production assessment in the Tarim River Basin based on CMIP6 models
Received date: 2025-04-07
Revised date: 2025-08-04
Online published: 2026-03-12
Climate change significantly affects cotton production. This study assessed the effectiveness of the DSSAT-CROPGRO-Cotton model in simulating cotton production in the Tarim River Basin. Using climate change datasets generated by CMIP6 climate models under the SSP2-4.5 and SSP5-8.5 Shared Socioeconomic Pathways, the study analyzed the spatiotemporal variations and centroid shift patterns of climate characteristics, cotton yield, irrigation water volume, and water productivity from 2021 to 2100. The results indicate that during the cotton-growing season, temperature in the Tarim River Basin is projected to rise by up to 4.9 ℃, whereas precipitation is expected to decrease by an average of 3.4-4.4 mm, and solar radiation is likely to decline by 0.6-0.7 MJ∙m-2 from 2021 to 2100. The DSSAT-CROPGRO-Cotton+GIS coupled model reliably simulated cotton yield and irrigation water volume in the Tarim River Basin. Under future scenarios, cotton yield is projected to increase by 12.42%-23.96% relative to historical levels, with irrigation water volume rising by 1.76%-21.82% and water productivity by 0.95%-20.61%. The changes in cotton yield, irrigation water volume, and water productivity under the SSP2-4.5 and SSP5-8.5 scenarios exhibit distinct patterns. In the SSP2-4.5 scenario, cotton yield is expected to follow an “increase-stagnation” pattern, whereas irrigation water volume is anticipated to “continuously increase,” and water productivity is likely to follow an “increase-decrease” pattern. In contrast, under the SSP5-8.5 scenario, cotton yield is projected to follow an “increase-stagnation-decrease” pattern, with irrigation water volume still “continuously increasing,” whereas water productivity is expected to follow an “increase-stagnation-sharp decrease” pattern. Centroid analysis shows that under the SSP2-4.5 scenario, the centroid of cotton yield is expected to shift northeastward, whereas under the SSP5-8.5 scenario, it exhibits a “northeast-southwest” oscillation. The centroid of irrigation water volume is projected to shift northeastward, whereas that of water productivity is likely to shift southwestward in future scenarios.
YUE Shengru , HU Xuefei , HOU Xiaohua , MENG Fujun . Cotton production assessment in the Tarim River Basin based on CMIP6 models[J]. Arid Zone Research, 2025 , 42(10) : 1925 -1938 . DOI: 10.13866/j.azr.2025.10.15
表1 耦合模式比较计划第六阶段(CMIP6)中13种模式信息Tab. 1 Thirteen-model information in phase 6 of the Coupled Model Intercomparison Project (CMIP6) |
| 编号 | 名称 | 国家 | 发布年份 | 空间分辨率(经向×纬向) |
|---|---|---|---|---|
| 1 | ACCESS-ESM1-5 | 澳大利亚 | 2019年 | 1.875°×1.241° |
| 2 | BCC-CSM2-MR | 中国 | 2017年 | 1.125°×1.125° |
| 3 | CMCC-ESM2 | 意大利 | 2017年 | 1.25°×0.9375° |
| 4 | ESM2-0 | 中国 | 2022年 | 1.875°×1.875° |
| 5 | INM-CM4-8 | 俄罗斯 | 2016年 | 2.00°×1.50° |
| 6 | INM-CM5-0 | 俄罗斯 | 2016年 | 2.00°×1.50° |
| 7 | IPSL-CM6A-LR | 法国 | 2017年 | 2.50°×1.26° |
| 8 | MPI-ESM1-2-HR | 德国 | 2017年 | 0.9375°×0.9375° |
| 9 | MPI-ESM1-2-LR | 德国 | 2017年 | 1.875°×1.875° |
| 10 | MRI-ESM2-0 | 日本 | 2017年 | 1.125°×1.125° |
| 11 | NESM3 | 中国 | 2016年 | 1.875°×1.875° |
| 12 | NorESM2-MM | 挪威 | 2017年 | 2.50°×2.50° |
| 13 | TaiESM1 | 中国 | 2018年 | 1.25°×0.9375° |
表2 塔里木河流域气象站点信息Tab. 2 Meteorological station information of the Tarim River Basin |
| 区站号 | 站点名称 | 纬度 | 经度 | 海拔/m | 区站号 | 站点名称 | 纬度 | 经度 | 海拔/m |
|---|---|---|---|---|---|---|---|---|---|
| 51559 | 和静 | 42.32°N | 86.40°E | 1100.90 | 51720 | 柯坪 | 40.50°N | 79.05°E | 1161.80 |
| 51567 | 焉耆 | 42.08°N | 86.57°E | 1055.30 | 51722 | 阿瓦提 | 40.65°N | 80.40°E | 1044.30 |
| 51568 | 和硕 | 42.25°N | 86.80°E | 1085.40 | 51730 | 阿拉尔 | 40.55°N | 81.27°E | 1012.20 |
| 51627 | 乌什 | 41.22°N | 79.23°E | 1395.80 | 51765 | 铁干里克 | 40.63°N | 87.70°E | 846.00 |
| 51628 | 阿克苏 | 41.12°N | 80.38°E | 1107.10 | 51777 | 若羌 | 39.03°N | 88.17°E | 887.70 |
| 51629 | 温宿 | 41.27°N | 80.23°E | 1133.10 | 51802 | 英吉沙 | 38.93°N | 76.17°E | 1297.50 |
| 51633 | 拜城 | 41.78°N | 81.90°E | 1229.20 | 51810 | 麦盖提 | 38.92°N | 77.63°E | 1178.20 |
| 51636 | 新和 | 41.55°N | 82.65°E | 1009.80 | 51811 | 莎车 | 38.43°N | 77.27°E | 1231.20 |
| 51639 | 沙雅 | 41.23°N | 82.78°E | 980.40 | 51814 | 叶城 | 37.92°N | 77.40°E | 1360.40 |
| 51642 | 轮台 | 41.82°N | 84.27°E | 982.00 | 51815 | 泽普 | 38.20°N | 77.27°E | 1274.70 |
| 51644 | 库车 | 41.72°N | 82.97°E | 1081.90 | 51818 | 皮山 | 37.62°N | 78.28°E | 1375.40 |
| 51655 | 尉犁 | 41.35°N | 86.27°E | 884.90 | 51826 | 策勒 | 37.02°N | 80.80°E | 1336.50 |
| 51656 | 库尔勒 | 41.73°N | 85.82°E | 899.80 | 51827 | 墨玉 | 37.17°N | 79.63°E | 1348.90 |
| 51704 | 阿图什 | 39.72°N | 76.17°E | 1298.70 | 51828 | 和田 | 37.13°N | 79.93°E | 1375.00 |
| 51707 | 伽师 | 39.50°N | 76.78°E | 1204.70 | 51829 | 洛浦 | 37.08°N | 80.17°E | 1347.90 |
| 51708 | 阿克陶 | 39.15°N | 75.95°E | 1325.10 | 51839 | 民丰 | 37.07°N | 82.72°E | 1409.50 |
| 51709 | 喀什 | 39.48°N | 75.75°E | 1385.60 | 51855 | 且末 | 38.15°N | 85.55°E | 1247.20 |
| 51716 | 巴楚 | 39.80°N | 78.57°E | 1116.50 | 51931 | 于田 | 36.85°N | 81.65°E | 1422.00 |
| 51717 | 岳普湖 | 39.25°N | 76.78°E | 1206.30 |
图6 未来情景下棉花产量、灌溉量和水分生产率变化空间特征Fig. 6 Spatial variation characteristics of cotton yield, irrigation amount and water productivity under future scenarios |
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