课题基金基金详情
杉木人工林SOM形成与转化的生物学控制机制
结题报告
批准号:
31830015
项目类别:
重点项目
资助金额:
281.0 万元
负责人:
王清奎
学科分类:
森林培育学
结题年份:
2023
批准年份:
2018
项目状态:
已结题
项目参与者:
王清奎
国基评审专家1V1指导 中标率高出同行96.8%
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中文摘要
我国人工用材林较低的生产力严重影响了国家木材战略安全,其根本原因是土壤有机质的含量和质量不高。因此,提高土壤有机质是人工林地力培育的重要基础。然而,目前人工林土壤有机质形成与转化的生物学机制尚不清楚,制约了我们对土壤有机质的培育与调控。鉴于此,本项目以杉木人工林为研究对象,依托DIRT、施肥、间伐等长期控制试验,结合野外调查和模拟试验,以凋落物-微生物-土壤有机质为核心,采用13C示踪、PLFA、团聚体分级、GS-MS等技术与方法,通过研究凋落物碳的分配与稳定、微生物残留物续埋效应、凋落物同化与激发的动态平衡等过程,探讨凋落物和微生物所驱动的土壤有机质的形成与转化过程,解析它们对养分管理、树种组成、采伐等经营活动的响应,最终阐明土壤有机质形成与转化的生物学机制及其调控。本项目的研究将为人工林土壤有机质和林地地力的培育与管理提供理论和实践支持,促进我国人工林高效、稳定、可持续发展与经营。
英文摘要
In China, the low productivity of timber plantations has seriously affected the national timber strategic security. The fundamental reason of the low productivity is the low content and quality of soil organic matter. Therefore, improving soil organic matter is an important basis for soil fertility cultivation. However, the biological mechanism of soil organic matter accumulation is not clear, which restricts the cultivation and regulation of soil organic matter in plantations. Therefore, based on DIRT, fertilization, and thinning long-term control experiments, combined with field investigation and simulated incubation, this proposed project will address this key issue using the methods and techniques of 13C tracer, PLFA, aggregate fractionation, and GS-MS in the subtropical Chinese fir plantation. We aimed at evaluating the dynamic balance between litter assimilation into new soil organic matter and priming of old soil organic matter, distribution and stability of litter-derived carbon in soil different aggregates, and entombing effect of soil microbial residues. We also investigated the responses of these processes to nutrient management, tree species composition and harvesting in plantation ecosystems. Finally, we will clarify the biological mechanism and regulation of the formation and transformation of soil organic matter driven by litter and microorganisms. The results of this study will provide the theoretical and practical supports for the cultivation and management of soil organic matter and soil fertility in plantation ecosystems, and promote the efficient and sustainable development of plantation forests in China.
期刊论文列表
专著列表
科研奖励列表
会议论文列表
专利列表
DOI:10.1016/j.geoderma.2019.01.032
发表时间:2019-05
期刊:Geoderma
影响因子:6.1
作者:Qingkui Wang;Longchi Chen;Qingpeng Yang;T. Sun;Changmeng Li
通讯作者:Qingkui Wang;Longchi Chen;Qingpeng Yang;T. Sun;Changmeng Li
DOI:10.1016/j.soilbio.2020.107802
发表时间:2020-06
期刊:Soil Biology & Biochemistry
影响因子:9.7
作者:Lingrui Qu;Chao Wang;E. Bai
通讯作者:Lingrui Qu;Chao Wang;E. Bai
DOI:10.1016/j.soilbio.2021.108207
发表时间:2021-03-12
期刊:SOIL BIOLOGY & BIOCHEMISTRY
影响因子:9.7
作者:Li, Jing;Sang, Changpeng;Wang, Chao
通讯作者:Wang, Chao
Priming of soil organic carbon decomposition induced by exogenous organic carbon input: a meta-analysis
外源有机碳输入诱导土壤有机碳分解的引发:荟萃分析
DOI:10.1007/s11104-019-04240-5
发表时间:2019-10-01
期刊:PLANT AND SOIL
影响因子:4.9
作者:Sun, Zhaolin;Liu, Shengen;Wang, Qingkui
通讯作者:Wang, Qingkui
DOI:10.1111/1365-2435.13256
发表时间:2019-01
期刊:Functional Ecology
影响因子:5.2
作者:Wang Qingkui;Zhao Xuechao;Chen Longchi;Yang Qingpeng;Chen Shi;Zhang Weidong
通讯作者:Zhang Weidong
杉木林土壤微生物残体积累的分异特征及其凋落物输入的调控机制
CO2浓度升高和氮沉降对树木光合碳向SOM关键组分转化的影响
改变碳输入对杉木林土壤碳库构成及CO2通量的影响
国内基金
海外基金