Results 21 to 30 of about 250,644 (147)
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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The underappreciated roles of fog and dew on vegetation and biocrusts
New Phytologist, Volume 251, Issue 1, Page 46-63, July 2026.Summary Fog and dew represent minor components of ecosystem water budgets in most ecosystems. However, fog and dew can play an essential role in ecosystem dynamics and are particularly important for water‐limited systems. In addition to serving as direct water inputs, fog and dew can influence microclimate and water redistribution, thereby promoting ...
Lixin Wang, Yue Li, Mengyun Sun, Na Qiao
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Functional Ecology, Volume 40, Issue 5, Page 1415-1427, May 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Wildfires are disrupting and regenerating forces in nature that affect all ecosystem components. However, the impact of wildfires on soil multitrophic biodiversity and the resulting consequences for ecosystem multifunctionality (EMF) remain poorly understood.
Juan Zhou +6 more
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Shuitu Baochi Xuebao, 2004 通过对土壤水分入渗垂直变异的分析来探讨贵州岩溶地区黄壤坡地的土壤水分特性。主要运用小波变换对各层土壤水分序列的突变点进行了检测,根据相干谱和互谱特征分析了各层土壤水分变化的响应关系,利用相频特征研究了各层土壤之间水分变化的时滞性。结果表明,试验区各层土壤水分变化近似平稳随机过程;土壤表层(0～20cm)的水分突变现象要明显多于下层(20～100cm);0～10cm土壤层与40～60cm的土壤层透水性较弱,而中间层和底层的持水性较差,大部土壤层的水分变化与其上层之间存在一定的时滞性。
蒋太明 刘海隆 刘洪斌 肖厚军 夏锦慧
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Review of Policy Research, Volume 42, Issue 6, Page 1428-1449, November 2025.ABSTRACT In Colorado, cattle farming—the state's leading agricultural sector—is a significant source of methane emissions. In response, both the government and producers have initiated efforts to mitigate the effects of climate change and enhance sustainability.
Lauren Lecuyer, Mathilde Verrier
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Shuitu Baochi Xuebao, 2017 为了研究黄土区人工林地土壤水分特征曲线及土壤水势特征，以陕北黄土区人工刺槐林地为研究对象，利用中子水分仪和中国科学院地理科学与资源研究所设计的负压计，对其2015年4月1日—2015年10月31日0—200 cm土层的土壤含水量和土壤水势进行了连续观测，并运用灰关联法分析了表层（0—40 cm）、中层（50—120 cm）、深层（130—200 cm）及4—10月土壤水势灰关联度。结果表明：（1）陕北黄土区人工刺槐林地各土层土壤水分特征曲线可用Gardner模型幂函数方程θ=aS-b进行拟合 ...
肖恩邦 +4 more
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Integrative Conservation, Volume 4, Issue 3, Page 362-380, September 2025.Occurrences of dust storms and long‐distance movement of dust across landscapes is constantly increasing in south Asia. This dust is expected to have profound impact on vegetation health and sustainability as dust may contribute to nutrient budgets of the forest ecosystems, while it could impart various stresses to the plants.
Shree P. Pandey +2 more
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Shuitu Baochi Xuebao, 2021 为系统评价黄土丘陵沟壑区在"退耕还林（草）"工程实施后不同退耕模式下的土壤水分涵养功能，选取0-200 cm土层的蓄水量、土壤含水量分层比、土壤水吸力和土壤含水量年际变化率作为土壤层水分蓄存、渗透、保持和稳定性的表征指标，分别对比了不同退耕模式下的土壤水文性质。结果表明：（1）各退耕模式下土壤蓄水量差异显著，撂荒模式的土壤蓄水量最高，为还灌和还乔模式下的1.6，1.7倍；（2）还乔模式下表层土壤水分的渗透性最优，深层土壤水分的渗透潜力最大；（3）各退耕模式的土壤持水性差异显著 ...
葛俸池, 许明祥
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Journal of Ecology, Volume 113, Issue 7, Page 1746-1759, July 2025.In forests dominated by large clonal plants, such as giant moso bamboo, drought can alter the allocation of newly assimilated C within the tissues of source ramet but may not affect its allocation among interconnected ramets or within plant–soil systems.
Xiaogai Ge +9 more
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Shuitu Baochi Xuebao, 2016 通过对重庆合川和云南楚雄紫色土坡耕地野外调查和室内土壤物理力学性质分析，对比研究了紫色土坡耕地耕层土壤的蓄水、稳定及耕性特征。结果表明：（1）紫色土坡耕地耕层土壤入渗速率随土层深度而降低，0—20，20—40，40—60 cm耕层土壤稳定入渗率分别为5.80～9.58，2.81～4.35，0.98～1.96 mm/min；而相应深度土壤最大有效库容分别介于49.93～66.26，46.04～59.05，37.42～43.55 mm范围，0—20 cm土壤兴利库容高产耕层大于低产耕层；（2 ...
丁文斌 +4 more
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