Results 21 to 30 of about 899,814 (147)
Shuitu Baochi Xuebao, 2004 不同开垦年限黑土土壤有机碳及其组分含量变化的研究结果表明:土壤开垦前50年,黑土耕层及犁底层总有机碳及其组分含量下降迅速,土壤有机碳的氧化稳定性系数变化强烈。黑土开垦130年后,有机碳及各组分含量基本上处于相对稳定状态。黑土耕作200年,耕层总有机碳含量损失幅度约1.76%～24.81%。有机碳组分中,FA-C受开垦年限影响相对较小,Hu-C受开垦年限影响最大。
于君宝 刘景双 王金达 刘淑霞 齐小宁 王洋 王国平
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Functional Ecology, Volume 39, Issue 12, Page 3504-3516, December 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Nitrogen (N) deposition strongly affects litter decomposition and nutrient release, thereby reshaping carbon cycling in terrestrial ecosystems. Although most studies have focused on above‐ground litter, the effects of N addition on fine root decomposition and their ...
Yuneng Wang +5 more
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Shuitu Baochi Xuebao, 2005 采用第二次土壤普查资料,研究了安徽省不同土地类型表层土壤的有机碳密度和碳库的特点。结果表明,安徽省平均有机碳密度为(31.64±16.39)tC/hm2,林地土壤表层有机碳密度高于全省表层土壤平均有机碳密度,旱作土壤表层有机碳密度则低于全省平均值。有机碳密度的大小顺序为:林地>水稻土耕层>旱地。安徽省表层土壤有机碳储量分布也表现为:林地>水稻土>旱地。表层土壤有机碳总量达0.28 Pg,其中林地占50%,水稻土占23%,而旱地只占18%。因此,人为利用特点是区域土壤碳库和碳密度的主要影响因素。分析表明 ...
许信旺 潘根兴 侯鹏程
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Shuitu Baochi Xuebao, 2004 为了解侵蚀型红壤不同植被恢复后,土壤有机碳的演变状况,采集了持续时间为17年和9年的2个定位试验点土壤样品,分析了土壤总有机碳、微生物量碳、水溶性碳和矿化态碳含量.结果表明侵蚀型红壤植被恢复后,土壤总有机碳和各类活性碳含量均明显增加,并随着恢复时间的延长,土壤各类碳含量显著上升.同样是杉木林,恢复17年的土壤(0～20 cm)总有机碳、微生物量碳、水溶性碳和矿化态碳的含量分别是恢复9年土壤的2.18倍、2.95倍、2.25倍和2.01倍.不同处理比较来看,木荷林土壤各类碳含量明显高于杉木林土壤 ...
周国模 姜培坤
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Integrative Conservation, Volume 4, Issue 3, Page 345-353, September 2025.Restoration of monoculture in protected and marginal areas can be organized into two phases (1) identification and prioritization of restoration sites based on remote sensing or field survey then assessing degradation level, and (2) implementation of appropriate restoration interventions.
Liang Song +9 more
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, 2011 分析了沿青海湖湖岸采集的81个表土样品的总有机碳和氮含量得出:环湖区表土有机碳储量为27.81×106t,总氮储量为30.24×105t。占研究区面积最大的栗钙土,其表层土壤有机碳密度(8.19kg/m2)显著高于同类研究,氮含量(3.63mg/g)亦高于青海省同类土壤的平均值,说明环湖区表土碳氮储量都是相当大的。同时 ...
韩永明, 王旭, 胡卫国, 曹军骥
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Shuitu Baochi Xuebao, 2003 为了解毛竹林集约经营后土壤有机碳库发生的变化,采集了集约经营历史5～10年竹林的土壤样品进行分析,并与粗放经营毛竹林进行比较。研究结果表明:毛竹林集约经营后土壤总有机碳、水溶性有机碳和微生物量碳含量都明显减少,与粗放经营毛竹林之间有显著差异 ...
徐秋芳 徐建明 姜培坤
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温度对贵州喀斯特黄色石灰土有机碳矿化、水稻秸秆激发效应和Q10的影响
Shuitu Baochi Xuebao, 2022 为定量揭示温度和秸秆还田对贵州喀斯特黄色石灰土土壤有机碳矿化、激发效应和温度敏感性的影响。以贵州喀斯特地区典型黄色石灰土为研究对象,采用13C稳定性同位素标记的水稻秸秆和土壤培养试验研究了15,25,35 ℃培养温度下土壤原有有机碳矿化速率、累积矿化量、激发效应和温度系数Q10对水稻秸秆输入和温度的响应。结果表明:15~35 ℃温度范围和0~60天培养时间内,贵州喀斯特黄色石灰土土壤有机碳、总有机碳、水稻秸秆有机碳和土壤原有有机碳矿化速率均培养1天达到峰值,培养1~30天土壤总有机碳 ...
段建军 +6 more
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New Phytologist, Volume 247, Issue 1, Page 144-159, July 2025.Summary Domesticated chickpea cultivars exhibit limited genetic diversity. This study evaluated the effects of chickpea domestication on phosphorus (P)‐use efficiency (PUE) under low‐P conditions, using a diverse Cicer collection, including wild species. Two wild Cicer species – 54 C. reticulatum accessions and 15 C. echinospermum accessions, and seven
Jiayin Pang +8 more
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Veterinary Dermatology, Volume 36, Issue 3, Page 302-313, June 2025.Background – Malassezia pachydermatis (MP) is implicated in severe dermatitis and otitis externa (OE) of companion animals and recently gained attention for its increasing resistance to azole compounds. For this reason, developing novel therapeutic strategies is of great interest. In a previous work, we used reference yeast isolates to evaluate several
Costanza Spadini +11 more
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