2022/23年南极半岛北部3个站点土壤水分变化特征

IF 0.5 Q4 ECOLOGY

Czech Polar Reports Pub Date : 2023-10-08 DOI:10.5817/cpr2023-1-2

Filip Hrbáček, Michaela Kňažková, Mohammad Farzamian, Joana Baptista

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引用次数: 0

摘要

土壤湿度是南极洲陆地环境的重要参数之一。它影响着生物的丰度，也影响着土壤的热状态。在这项研究中，我们提出了一年的体积含水量和土壤温度测量在詹姆斯罗斯岛，纳尔逊岛和乔治国王岛。各测点的体积含水量随深度增加而增加。夏季平均值分别为0.24 ~ 0.37 cm3/cm3(詹姆斯罗斯岛)、0.30 ~ 0.40 cm3/cm3(尼尔森岛)和0.11 ~ 0.36 cm3/cm3(乔治王岛)。我们发现尼尔森岛和乔治王岛的土壤冰点接近0°C。詹姆斯罗斯岛的土壤冻结温度较低，约为-0.5°C，我们将其归因于靠近海洋的场地位置。尽管这些地点位于不同的气候带，由不同的土壤类型组成，但唯一的水分状况差异是在研究地点的表层观察到的。

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Variability of soil moisture on three sites in the Northern Antarctic Peninsula in 2022/23

Soil moisture represents one of the crucial parameters of the terrestrial environments in Antarctica. It affects the biological abundance and also the thermal state of the soils. In this study, we present one year of volumetric water content and soil temperature measurements on James Ross Island, Nelson Island and King George Island. The volumetric water content at all sites increased with depth. The mean summer values were between 0.24 and 0.37 cm3/cm3 (James Ross Island), 0.30 and 0.40 cm3/cm3 (Nelson Island) and 0.11 and 0.36 cm3/cm3 (King George Island). We found that the freezing point of the soils was close to 0°C on Nelson Island and King George Island. We attributed the lower temperature of soil freezing around -0.5°C on James Ross Island to the site location close to the sea. Even though the sites are located in the distinctive climate zones and comprise of contrasting soil types, the only differences of moisture regime were observed the surficial layer of the studied sites.

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来源期刊

Czech Polar Reports Agricultural and Biological Sciences-Agricultural and Biological Sciences (all)

CiteScore

1.30

自引率

10.00%

发文量

期刊介绍： Czech Polar Reports is an international, multidisciplinary, peer-reviewed journal. It is issued 2 times a year. The journal is dedicated to provide original research papers for sciences related to the polar regions and other planets with polar analogues. Czech Polar Reports covers the disciplines listed below. polar paleontology, geology, geochemistry, geomorphology, glaciology, climatology, hydrology, pedology, biochemistry, ecology, environmental science, microbiology, plant and animal biology including marine biology.