Food source and feeding habit of Helice tientsinensis from the common reed vegetation in high marsh of Yellow River Delta,China [PDF]
, 2020 Investigating the composition of food sources with stable isotope method can provide direct evidence for the top-down control in the coastal wetland.In this study,we examined food source and feeding habit of Helice tientsinensis of common reed ...
兰思群 +6 more
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Spatial and Temporal Changes in Soil Water Erosion in Baisha River Basin from 2007 to 2020 [PDF]
, 2022 [Objective] The spatial-temporal variations of soil water erosion before and after the Wenchuan earthquake in the Baisha River basin of Dujiangyan City, Sichuan Province were assessed to support water source protection efforts and comprehensive control ...
Bao Yuhai +5 more
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Human-induced disturbance on the understory plant diversity of urban forest:a case study of Xiamen [PDF]
, 2009 以厦门城市森林林下层植被为研究对象,重点研究台湾相思群落中林下灌草层植物多样性与土地利用类型、人为干扰程度之间的相关性;选用基于重要值的4种多样性指数,比较不同邻接用地类型城市森林群落多样性的差异;运用主成分分析、CCA排序以及多元回归等方法对城市森林灌草层植物多样性格局进行解释。结果表明:人为踩踏、垃圾堆积程度、人为挖掘、可到达容易程度等因子对厦门城市森林灌草层植物多样性分布格局有重要影响;厦门城市森林群落草本层β多样性沿着邻接商业用地、交通用地、工业用地、居住用地的方向逐渐增加 ...
吕静 +5 more
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Mechanisms of carbon distribution and stability in the photosynthetic processes of plant-soil systems influenced by arbuscular mycorrhizal fungi during reclamation of mining areas [PDF]
Inoculation of Arbuscular Mycorrhizal Fungi (AMF) combined with vegetation restoration has become a key reclamation technology for ecological restoration in mining subsidence.
Dongdong WANG +3 more
core +1 more source
Shuitu Baochi Xuebao, 2019 森林枯落物对坡面土壤侵蚀过程发挥着重要的调控作用，但其控制效应仍待明确。采用室内大型土槽及人工模拟降雨试验探讨油松枯落物的不同铺设方式对坡面产流产沙的影响，试验在4种雨强（30，60，90，120 mm/h）和油松枯落物的3种铺设方式（裸坡对照、枯落物直接铺设和枯落物隔网铺设）下进行，设置枯落物隔网铺设方式来研究枯落物降低雨滴动能减少击溅侵蚀作用，设置枯落物直接铺设方式来研究枯落物增大地表粗糙率阻滞拦截作用。结果表明：（1）枯落物存在使坡面初始产流时间延长2.3~5.5倍 ...
刘京晶 +6 more
doaj
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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Evolution Characteristics of Soil and Water Conservation Carbon Pool and Its Carbon Sink Potential in Typical Small Watershed of the Loess Plateau [PDF]
[Objective] To investigate the evolution of soil carbon pool under catchment scale integrated soil and water conservation measures and evaluate the potential of soil and water conservation carbon sink. [Methods] Typical small watershed for soil and water
DONG Pengbei +5 more
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Shuitu Baochi Xuebao, 2005 通过对山东省石灰岩山区4种主要灌木林枯落物蓄积量及其持水特性的试验研究,总结出不同林分枯落物的持水性能。结果表明,4种林分枯落物的蓄积量从大到小依次为连翘林>黄栌林>黄荆林>绣线菊林。在前0.5h内,4种林分枯落物吸水速率的大小顺序为绣线菊林>黄栌林>黄荆林>连翘林。4种林分枯落物最大持水量的大小顺序为黄栌林>连翘林>绣线菊林>黄荆林。4种林分枯落物有效拦蓄量的大小顺序为黄栌林>连翘林>绣线菊林>黄荆林。
李红云 杨吉华 鲍玉海 郑兆亮 贝桂民
doaj +2 more sources
Shuitu Baochi Xuebao, 2018 选取黄土高原丘陵沟壑区刺槐、柠条、铁杆蒿、白羊草4种典型植被样地，系统研究枯落物蓄积量、持水量和拦蓄量变化情况。结果表明：（1）枯落物地表蓄积量（0.14~0.83 kg/m2）和土壤中混入量（0.18~0.66 kg/m2）均表现为林地>灌木林地>草地，而土壤中枯落物所占比重（44.1%~73.5%）则表现为草地>灌木林地>林地；林地（刺槐和柠条）地表枯落物和土壤中枯落物沿坡长均表现为增加—减少交替的周期性变化，草地（白羊草和铁杆蒿）则随坡长的增大而增加。（2）枯落物持水量可表示为浸泡时间的对数函数 ...
汪建芳 +4 more
doaj
Distribution Characteristics of Phosphor and Sulfur in Different Wetland Soils of the Yellow River Delta [PDF]
, 2010 以黄河口滨岸潮滩湿地为研究对象,研究了不同植被群落覆盖下湿地土壤中磷、硫的变化特征及其储量状况。结果表明,植被群落的变化能够影响土壤中磷、硫的含量,但影响程度不同。沿植物群落演替方向,土壤全磷含量差异不显著,变异系数较小,而全硫含量受影响显著,呈“S“型波动变化;在垂直分布特征方面,全磷的差异程度不大,表明土壤中磷含量主要取决于成土母质,相对而言,硫的垂直分布特征存在较大差异,大部分采样点的变异系数在10%以上,属中等变异,其分布特征主要受制于土壤有机质的分布 ...
孙万龙 +3 more
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