| Carbon storage and distribution in the ecosystem of grape vineyards at the eastern foot of the Helan Mountains |
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| DOI：10.7606/j.issn.1000-7601.2025.01.22 |
| Key Words: wine vineyard ecosystem carbon storage distribution characteristics the eastern foot of Helan Mountain |
| Author Name | Affiliation | | WANG Xuefei | College of Biological Science and Engineering, North Minzu University, Yinchuan, Ningxia 750021, China | | WANG Yuejuan | College of Biological Science and Engineering, North Minzu University, Yinchuan, Ningxia 750021, China | | WEI Yuqing | College of Biological Science and Engineering, North Minzu University, Yinchuan, Ningxia 750021, China | | MA Tingting | College of Biological Science and Engineering, North Minzu University, Yinchuan, Ningxia 750021, China | | ZHOU Chaofan | College of Biological Science and Engineering, North Minzu University, Yinchuan, Ningxia 750021, China | | MA Haijun | College of Biological Science and Engineering, North Minzu University, Yinchuan, Ningxia 750021, China |
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| Abstract: |
| To clarify the carbon storage characteristics of the ecological system in vineyards at the eastern foot of the Helan Mountains, this study focused on the Yuquanying Vineyard in Yongning County, Yinchuan City. By measuring and calculating the carbon storage of aboveground vegetation, soil carbon storage, and soil respiration across different phenological periods, the temporal and spatial variations of carbon storage in the vineyard ecosystem were analyzed. The results showed that: (1) The carbon storage in grape plants gradually increased as the plants grow, with the carbon storage in different organs during the berry harvesting period ranked as follows: roots (2.40 t·hm-2) > perennial branches (2.14 t·hm-2) > fruit (1.26 t·hm-2) > leaves (0.65 t·hm-2) > one\|year\|old branches (0.60 t·hm-2). The soil carbon storage in 1 m soil depth gradually decreased with increasing soil depth, and it was mainly concentrated in 0~20 cm soil depth. The above\|ground carbon storage of grape plants significantly increased with the growth process, while the soil carbon storage remained unchanged. The carbon storage of grapevine vegetation was mainly concentrated in the perennial parts, with carbon storage proportions of 39.28% for perennial roots and 32.76% for perennial branches. (2) The mean soil respiration rate (0~10 cm soil layer) was 1.78 μmol·m-2·s-1, with the highest soil respiration rate during the berry growth period. Soil temperature and humidity were the main factors influencing soil respiration rate, explaining 90.9% and 41.2% of the variability, respectively. Soil respiration rate was significantly positively correlated with soil temperature and soil humidity at a depth of 0~10 cm. (3) In the grapevine ecosystem, ‘Chardonnay’ wine grape variety was 49.84 t·hm-2 with a planting density of 7 500 plants·hm-2, with the carbon storage of each component in the following order: soil layer 42.29 t·hm-2 (account for 84.85%) > plants 7.05 t·hm-2 (account for 14.15%) > weeds 0.27 t·hm-2 (account for 0.54%) > trimmer 0.23 t·hm-2 (account for 0.46%). The ecological system in the vineyards at the eastern foot of the Helan Mountains stored the fixed carbon mainly in the soil layer and the perennial woody parts of the plants during the grape growing season, showing strong carbon sequestration capacity. |
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