Types and characteristics of wetland soil were briefly introduced, and ecological functions of soil in wetland ecosystem were also discussed in this paper. Wetland soils can be divided into five types, including histo...Types and characteristics of wetland soil were briefly introduced, and ecological functions of soil in wetland ecosystem were also discussed in this paper. Wetland soils can be divided into five types, including histosol,gleysol,halomorphic soil,paddy soil and underwater soil, containing higher organic matter and situated in intense reduction circumstance. Because of their special physical and chemical properties, wetland soils showed varied ecological functions such as (a) to be as a medium of wetland living things ;(b) to provide nutrients; (c) to release greenhouse gases and (d) to purify or absorb toxic substances in wetland ecosystem.展开更多
To deal with the global and regional issues including food security, climate change, land degradation, biodiversity loss, water resource management, and ecosystem health, detailed accurate spatial soil information is ...To deal with the global and regional issues including food security, climate change, land degradation, biodiversity loss, water resource management, and ecosystem health, detailed accurate spatial soil information is urgently needed. This drives the worldwide development of digital soil mapping. In recent years, significant progresses have been made in different aspects of digital soil mapping. The main purpose of this paper is to provide a review for the major progresses of digital soil mapping in the last decade. First, we briefly described the rise of digital soil mapping and outlined important milestones and their influence, and main paradigms in digital soil mapping. Then, we reviewed the progresses in legacy soil data, environmental covariates, soil sampling, predictive models and the applications of digital soil mapping products. Finally, we summarized the main trends and future prospect as revealed by studies up to now. We concluded that although the digital soil mapping is now moving towards mature to meet various demands of soil information, challenges including new theories, methodologies and applications of digital soil mapping, especially for highly heterogeneous and human-affected environments, still exist and need to be addressed in the future.展开更多
【目的】随着人与土地资源的矛盾加剧,集约化种植下农田土壤质量演变受到了国内外学者的广泛关注。客观分析不同管理模式下土壤质量研究的发展脉络与现状,明确当前的研究前沿与热点问题,为耕地质量领域研究提供参考。【方法】利用文献...【目的】随着人与土地资源的矛盾加剧,集约化种植下农田土壤质量演变受到了国内外学者的广泛关注。客观分析不同管理模式下土壤质量研究的发展脉络与现状,明确当前的研究前沿与热点问题,为耕地质量领域研究提供参考。【方法】利用文献计量学方法,基于Web of Science和CNKI数据库,根据发文量、发文国家、发文机构、载文期刊、论文被引频次及关键词方面分析近30年来土壤质量研究的发展态势、前沿领域以及国际合作状况等。【结论】分析发现,该领域在时间序列上的相关文献数量整体保持良好的上升趋势;美国、中国、印度、巴西、加拿大是国际文献发文量较多的国家;共现网络图谱分析表明,长期施肥及耕作、轮作等措施与土壤养分、土壤结构、土壤生物与群落结构、土壤功能与监测评价仍是当前土壤质量研究的热点。近年来国内相关研究逐渐向基于土壤生物学土壤质量提升模式方向靠拢,但与国际领先水平仍有一定差距。【展望】土壤生物学在土壤质量演变中的机理研究、土壤生态系统服务功能的量化及其应用可能是未来该领域研究的两大热点,综合利用信息技术、生物技术及大数据分析技术来实现土壤质量动态监测与预测预警是未来土壤质量研究的重要方向。展开更多
文摘Types and characteristics of wetland soil were briefly introduced, and ecological functions of soil in wetland ecosystem were also discussed in this paper. Wetland soils can be divided into five types, including histosol,gleysol,halomorphic soil,paddy soil and underwater soil, containing higher organic matter and situated in intense reduction circumstance. Because of their special physical and chemical properties, wetland soils showed varied ecological functions such as (a) to be as a medium of wetland living things ;(b) to provide nutrients; (c) to release greenhouse gases and (d) to purify or absorb toxic substances in wetland ecosystem.
基金supported by the National Natural Science Foundation of China (91325301, 41571130051)
文摘To deal with the global and regional issues including food security, climate change, land degradation, biodiversity loss, water resource management, and ecosystem health, detailed accurate spatial soil information is urgently needed. This drives the worldwide development of digital soil mapping. In recent years, significant progresses have been made in different aspects of digital soil mapping. The main purpose of this paper is to provide a review for the major progresses of digital soil mapping in the last decade. First, we briefly described the rise of digital soil mapping and outlined important milestones and their influence, and main paradigms in digital soil mapping. Then, we reviewed the progresses in legacy soil data, environmental covariates, soil sampling, predictive models and the applications of digital soil mapping products. Finally, we summarized the main trends and future prospect as revealed by studies up to now. We concluded that although the digital soil mapping is now moving towards mature to meet various demands of soil information, challenges including new theories, methodologies and applications of digital soil mapping, especially for highly heterogeneous and human-affected environments, still exist and need to be addressed in the future.
文摘【目的】随着人与土地资源的矛盾加剧,集约化种植下农田土壤质量演变受到了国内外学者的广泛关注。客观分析不同管理模式下土壤质量研究的发展脉络与现状,明确当前的研究前沿与热点问题,为耕地质量领域研究提供参考。【方法】利用文献计量学方法,基于Web of Science和CNKI数据库,根据发文量、发文国家、发文机构、载文期刊、论文被引频次及关键词方面分析近30年来土壤质量研究的发展态势、前沿领域以及国际合作状况等。【结论】分析发现,该领域在时间序列上的相关文献数量整体保持良好的上升趋势;美国、中国、印度、巴西、加拿大是国际文献发文量较多的国家;共现网络图谱分析表明,长期施肥及耕作、轮作等措施与土壤养分、土壤结构、土壤生物与群落结构、土壤功能与监测评价仍是当前土壤质量研究的热点。近年来国内相关研究逐渐向基于土壤生物学土壤质量提升模式方向靠拢,但与国际领先水平仍有一定差距。【展望】土壤生物学在土壤质量演变中的机理研究、土壤生态系统服务功能的量化及其应用可能是未来该领域研究的两大热点,综合利用信息技术、生物技术及大数据分析技术来实现土壤质量动态监测与预测预警是未来土壤质量研究的重要方向。
