Results 41 to 50 of about 5,242 (162)
Shuitu Baochi Xuebao, 2008 采用烘干法及WP4水势仪对黄土高原水蚀风蚀复合区人工林下土壤重量含水量及水势进行测定,从土壤水分数量和能量两方面分析该区土壤水分时空分布和动态变化特征,并且通过实测数据对不同树种土壤水分特征曲线进行拟合,旨在为该区今后植被建设及生态用水提供理论参考。结果表明,各树种在0-300 cm土层土壤含水量随深度增加而逐渐降低,并趋于稳定。0-30 cm土层土壤含水量变化剧烈,30 cm以下土层土壤含水量逐渐降低,并趋于稳定在3.00%~5.00%。土壤水分受降雨量及其分配影响显著,观测期内土壤储水量盈余26.7
周海光 +4 more
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Shuitu Baochi Xuebao, 2020 以金沙江下游季节性干旱区紫色土坡耕地为研究对象，使用PR2/6土壤剖面水分测定仪和翻斗式雨量计对雨季0—100 cm土层的土壤含水量和降雨量进行连续观测，分析雨季紫色土土壤水分对降雨的响应。结果表明：每月平均土壤含水量之间存在显著差异，0—20 cm土壤含水率表现为9月 > 8月≈7月 > 6月，在整个雨季呈累加上升趋势。降雨量大小是影响土壤水分补给深度的决定因素。小雨（6.4 mm）只对10 cm土层土壤水分产生影响，平均提高12.35%；中雨（23 mm）对30 cm以上土层土壤水分产生影响，10 ...
徐露 +5 more
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, 2010 选取塔里木河下游3处地下水埋深>6m的监测井位作为研究点,结合典型生态监测断面的地下水位监测数据,分析不同地下水埋深处柽柳的叶绿素荧光特性和光系统的光合活性.结果表明:随着地下水埋深加大和干旱胁迫加剧,柽柳叶片的实际光化学效率、电子传输速率和光化学猝灭等参数普遍下降;非光化学猝灭和调节性能量耗散量子产量等参数显著升高,而最大光量子产量总体处于相对适宜状态.干旱胁迫下柽柳的PSII光合活性随地下水埋深增大而下降,捕获光能的过剩程度加剧,发生光抑制的几率增大,其自身良好的抗旱性和自我调节机制 ...
朱成刚 +3 more
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Effects of Water Supply Location in Anegative Pressure Irrigation System on Tomato Growth and Water Use Efficiency [PDF]
, 2023 [Objective] The specific effects of negative head irrigation system on tomato growth, irrigation method, and water utilization efficiency were studied in order to provide scientific references for improving the technical system of negative head ...
Feng Feng +6 more
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Functional Ecology, Volume 39, Issue 6, Page 1550-1566, June 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Forests store substantial amounts of soil organic carbon (SOC), but SOC stocks differ strongly between forest ecosystems dominated by arbuscular mycorrhizal (AM) or ectomycorrhizal (EcM) fungi.
Mengxu Zhang +10 more
wiley +1 more source
Contribution of Different Processes in Wetland Soil N_2O Production in Different Restoration Phases of the Yellow River Estuary, China [PDF]
, 2014 采用时空替代法,选择黄河口生态恢复前后未恢复区(R_0)、2007年恢复区(R_(2007))和2002年恢复区(R_(2002))的芦苇湿地为研究对象,分析了生态恢复工程对湿地土壤N_2O产生不同过程与贡献的影响. 结果表明,尽管不同恢复阶段湿地土壤N_2O总产生量差异明显,但总体均表现为N_2O释放. 恢复区湿地土壤的N_2O产生量大于未恢复区.
孙万龙 +4 more
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Effects of Different Ratios of Mineral-solubilizing Microbes and Water-retaining Agents on Soil Nutrients and Enzyme Activities [PDF]
, 2022 [Objective] The effects of mixed additions of a water-retaining agent and bacterial agents on soil characteristics were determined in order to provide a theoretical basis for promoting mine vegetation restoration.
Chen Meiling +6 more
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Functional Ecology, Volume 39, Issue 2, Page 635-652, February 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Invasive plants are a major cause of the global biodiversity crisis; it is therefore crucial to understand mechanisms that contribute to their success. South‐western Australia is a global biodiversity hotspot with extremely low soil phosphorus (P) concentrations.
Dan Tang +7 more
wiley +1 more source
World Water Policy, Volume 10, Issue 4, Page 1170-1186, November 2024.Abstract Sustainable land management (SLM) practices is a key to reducing rates of land degradation and has proven to ensure water security by increasing soil moisture availability, decreasing surface runoff, decreasing soil erosion, increasing infiltration, and decreasing flood discharge. Land degradation is adversely affecting over 75% of the Earth's
Melku Dagnachew +5 more
wiley +1 more source
Shuitu Baochi Xuebao, 2019 以陕北黄土区吴起县合沟流域浅沟土壤水分为研究对象，通过对研究区不同深度、不同坡向、不同坡位的浅沟土壤水分空间分布特征进行研究。结果表明：（1）根据浅沟与原状坡油松生长量关系，将浅沟划分为深浅沟（40 cm ≤浅沟深度）和浅浅沟（20 cm ≤浅沟深度 上坡位 > 中坡位；深浅沟则为上坡位 > 下坡位 > 中坡位；在浅沟内，阴坡在中、下坡位土壤水分显著高于阳坡，阳坡上坡位土壤水分则高于阴坡；原状坡阴坡土壤水分显著高于阳坡。
艾宁 +4 more
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