{"title":"Thresholds of Soil Moisture on the Temperature Response of Soil Respiration in Semiarid High-Altitude Grassland in Northwestern China","authors":"Zhimin Zhao, Fengxia Shi","doi":"10.1134/s1064229324600143","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Although soil temperature (<i>T</i><sub>s</sub>) is generally considered as the primarily factor influencing soil respiration (<i>R</i><sub>s</sub>), the correlation between soil respiration and soil temperature is often affected by soil moisture (<i>M</i><sub>s</sub>). In this study, we analyzed the correlation between <i>R</i><sub>s</sub> and <i>T</i><sub>s</sub> under different soil moisture condition in semiarid high-altitude grassland in northwestern China. The results showed that (1) when the values of <i>M</i><sub>s</sub> were higher than the field capacity (FC), <i>R</i><sub>s</sub> were mainly controlled by <i>M</i><sub>s</sub>. (2) FC was also an important threshold to affect the selection of <i>R</i><sub>s</sub>–<i>T</i><sub>s</sub> model and the determination of temperature sensitivity (<i>Q</i><sub>10</sub>). Our findings highlight that <i>R</i><sub>s</sub> is significantly influenced by <i>M</i><sub>s</sub> in a threshold manner, and FC is an important moisture threshold for <i>R</i><sub>s</sub> and its temperature response in high altitude semiarid ecosystems.We suggested that the effect of <i>M</i><sub>s</sub> on <i>R</i><sub>s</sub> cannot be neglected in high altitude semiarid ecosystems.</p>","PeriodicalId":11892,"journal":{"name":"Eurasian Soil Science","volume":null,"pages":null},"PeriodicalIF":1.4000,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Eurasian Soil Science","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1134/s1064229324600143","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"SOIL SCIENCE","Score":null,"Total":0}
引用次数: 0
Abstract
Although soil temperature (Ts) is generally considered as the primarily factor influencing soil respiration (Rs), the correlation between soil respiration and soil temperature is often affected by soil moisture (Ms). In this study, we analyzed the correlation between Rs and Ts under different soil moisture condition in semiarid high-altitude grassland in northwestern China. The results showed that (1) when the values of Ms were higher than the field capacity (FC), Rs were mainly controlled by Ms. (2) FC was also an important threshold to affect the selection of Rs–Ts model and the determination of temperature sensitivity (Q10). Our findings highlight that Rs is significantly influenced by Ms in a threshold manner, and FC is an important moisture threshold for Rs and its temperature response in high altitude semiarid ecosystems.We suggested that the effect of Ms on Rs cannot be neglected in high altitude semiarid ecosystems.
期刊介绍：
Eurasian Soil Science publishes original research papers on global and regional studies discussing both theoretical and experimental problems of genesis, geography, physics, chemistry, biology, fertility, management, conservation, and remediation of soils. Special sections are devoted to current news in the life of the International and Russian soil science societies and to the history of soil sciences.
Since 2000, the journal Agricultural Chemistry, the English version of the journal of the Russian Academy of Sciences Agrokhimiya, has been merged into the journal Eurasian Soil Science and is no longer published as a separate title.
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