活根或施用植物残体或肥料后12年的土壤碳

IF 2.4 3区农林科学 Q2 SOIL SCIENCE

Soil Science Society of America Journal Pub Date : 2023-09-29 DOI:10.1002/saj2.20597

Stewart B Wuest

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引用次数: 0

摘要

摘要采用不同碳源对休耕土壤或冬小麦作物连续施用等量碳，测定土壤有机碳含量。城市生物固体产生了最大的收益，其次是粪肥和苜蓿叶。小麦(Triticum aestivum L.)秸秆、蔗糖和木屑与未添加的差异不大。这些影响与休耕土壤和作物土壤的影响是叠加的，独立于休耕土壤和作物土壤的影响。种植冬小麦的土壤碳的增加与施用生物固体或种植多年生草的土壤碳的增加相当。恢复正常耕作方式后4、6和12年的测量结果显示，相对或数量差异没有变化。这些结果阐明了地上和地下对土壤碳贡献的持久性。这篇文章受版权保护。版权所有

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Soil carbon twelve years after live roots or application of plant residues or manure

ABSTRACT Soil organic carbon was measured after surface application of equal C amounts from various carbon sources to fallow soil or a winter wheat crop for five consecutive years. Municipal biosolid produced the largest gain, followed by manure and alfalfa ( Medicago sativa L.) foliage. Wheat ( Triticum aestivum L.) straw, sucrose, and wood sawdust were not different than no addition. These effects were additive to and independent from the effect of fallow soil versus cropped soil. Soil cropped to winter wheat increased in carbon comparable to the biosolid application or to plots planted to perennial grass. Measurements 4, 6, and 12 years after a return to normal farming practices produced no change in relative or quantitative differences. These results illuminate the durability of above‐ and below‐ground contributions to soil carbon. This article is protected by copyright. All rights reserved

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来源期刊

Soil Science Society of America Journal 农林科学-土壤科学

CiteScore

5.40

自引率

3.40%

发文量

130

审稿时长

3.6 months

期刊介绍： SSSA Journal publishes content on soil physics; hydrology; soil chemistry; soil biology; soil biochemistry; soil fertility; plant nutrition; pedology; soil and water conservation and management; forest, range, and wildland soils; soil and plant analysis; soil mineralogy, wetland soils. The audience is researchers, students, soil scientists, hydrologists, pedologist, geologists, agronomists, arborists, ecologists, engineers, certified practitioners, soil microbiologists, and environmentalists. The journal publishes original research, issue papers, reviews, notes, comments and letters to the editor, and book reviews. Invitational papers may be published in the journal if accepted by the editorial board.