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不同母岩母质土壤特性的分析与研究 总被引：1，自引：0，他引：1
不同的母岩、母质 ,一般形成不同性质的土壤。分析研究不同母岩、母质发育的土壤特性 ,对指导农林业生产具有重要的意义。该文仅就河北省西陵地区几种主要母岩母质发育形成的土壤做了初步的分析。经研究发现 ,不同母岩母质发育形成的土壤 ,其物理化学性质都存在很大的差异。 相似文献
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为研究清西陵地区土壤养分和酸碱状况，对不同地形及不同母质母岩上发育的典型土壤剖面分层采集土样，进行室内分析。结果表明：中山、低山石灰性母质土壤呈微酸性，有机、无机养分丰富。丘陵区石灰性母质土壤呈微碱性，非石灰性母质土壤呈中性偏酸，土壤养分总体水平偏低，但不同剖面存在一定差异。 相似文献
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油茶土壤母岩与叶片养分关系分析 总被引：2，自引：0，他引：2
我省油条土壤成土母岩主要有板岩、花岗岩、紫色砂岩、石灰岩、页岩及第四纪红土母质等。不同母岩发育的土镶,其特性,矿物元素含量不同,并影响到油茶营养状况和生长发育。为探求土壤母岩与油茶叶片养分含量的关系,对生长在扳岩、花岗岩、紫色砂岩(砂岩)、石灰岩及第四纪红土母质发育的土壤上的油茶作了初步的调查、测定。 相似文献
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土壤对毛竹眉径生长影响的研究 总被引：9，自引：0，他引：9
根据150块标准地材料,应用多元线性回归和逐步回归分析方法,研究了土壤性质与毛竹眉径间的关系及不同母岩发育的土壤理化性质。研究结果指出,土壤因子与毛竹眉径生长关系非常密切,线性回归和复相关性均达极显著水平(α=0.01),但不同因子对毛竹眉径生长的影响程度不同,土层厚度、20 cm以下土壤有效磷和速效氮含量是影响毛竹眉径生长的主导因子。不同母岩发育的土壤的理化性质有较大差异,对毛竹生长来说,变质岩和岩浆岩发育的土壤质量差异不明显,但沉积岩发育的土壤质量明显差。 相似文献
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湖南林地土壤酸碱性分析 总被引：1，自引：0，他引：1
《湖南林业科技》2018,(6)
对湖南省林地土壤的酸碱性进行了分析。结果表明:湖南省林地强酸性土壤最多,其次为弱酸性土壤和极强酸性土壤,中性土壤、弱碱性土壤和强碱性土壤较少,无极强碱性土壤。不同类型土壤平均pH值从大至小依次为石灰土、潮土、紫色土、山地黄壤、山地黄棕壤、红壤、山地草甸土。不同母质母岩发育的土壤平均pH值从大至小依次为冲积母质、紫色页岩、石灰岩、砂岩、板、页岩、花岗岩、第四纪红色粘土。 相似文献
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模拟降雨条件下不同林分类型土壤抗蚀性研究 总被引：2，自引：0，他引：2
为了对影响林地土壤抗蚀性各项指标的自变量因子的重要性进行比较分析，本文运用多对多线性回归数学模型，采用“标准小型模拟降雨试验仪”测得的初产流时间（Ｓ）、径流量（ｓｍ＾３／ｈｍ＾２）及泥沙流失量（Ｔ／ｈｍ＾２）三项抗蚀性指标，同林地土壤因子及林分结构因子进行回归分析。在测试的板页岩、花岗岩、石灰岩与四纪红壤四种母岩发育的土壤上，石灰岩母质的土壤泥沙流失量最小，初产流时间最长的为花岗岩母质上的厚朴林分 相似文献
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森林环境与土壤相对性研究毛静涛（延边林业学校）土壤在形成的过程中，生物、母质、气候、地形和时间是决定其性质的主要因素，通称５大因子。其中，又以生物为最活跃的因素。由于同一地区的５大因子基本相同，其发育起来的土壤的性质即是相对稳定的。但土壤形成以后，在... 相似文献
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对豫北太行山土壤有机质含量分布规律研究结果表明,在海拔1500m 以下,土壤有机质含量随海拔升高而平缓增加,由2.69%增加到2.95%;在海拔1500m 以上,土壤有机质含量迅即增加到4.23%;不同母岩发育的土壤,有机质含量也不同,花岗岩、片麻岩、安山岩土壤中有机质含量最高,平均4.07%,石灰岩次之,平均3.79%,黄土母质最低,平均1.53%。 相似文献
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本文通过几种不同母岩发育的土壤团粒度的比较，找出不同母岩发育的土壤抗蚀性的强弱，采用多元回归统计方法，研究土壤的物理性质与土壤团粒度的关系。结果得出第四纪粘土的团粒度最大．紫色土的团粒度最小。各物理性质与土壤团粒度呈多元线性关系，并且这种线性关系是显著的．这为治理水土流失提供一定的科学依据。 相似文献
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《Scandinavian Journal of Forest Research》2012,27(3):203-213
Abstract The effects of topographic features and the soil parent rock on the site index of Norway spruce [Picea abies (L.) Karst.] were examined. Field data were collected on 347 plots located in the Polish West Carpathian. On these plots, the diameter at breast height and the height of trees were measured and the age of trees was determined. On 64 plots one dominant or codominant tree was felled for stem analysis. In addition, topographic features of each site were measured, including elevation above sea level, aspect and slope. Stem analysis data were used in the development of a local site index system, which was used for calculating the site index for particular plots. In order to interpret site index as functions of elevation, aspect, slope, size of a mountain massif and soil parent rock, the multiple regression model was used, which explained 79.0% of the variation in Norway spruce site index. Elevation above sea level was the major factor responsible for variation in site index, and was negatively correlated (R 2 adj=0.610) with site index. Site index also depended on the soil parent rock. The stands growing on the tertiary Magura sandstones had considerably higher site indices than those located on the geological substratum composed of Istebna and Godula sandstones formed during the Cretaceous period. The site index of Norway spruce is also determined by the aspect, slope and height of mountain massif. 相似文献
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对板页岩红壤和四纪红壤2种不同母质土壤和3种不同坡位上的湿地松林分进行调查与分析。结果表明:在四纪红壤与板页岩红壤中生长的湿地松林分其生长量差异显著,说明母质对湿地松林分的生长具有显著影响;位于上坡位的湿地松林分在四纪红壤中的生长表现要显著优于板页岩红壤中的,相反,位于下坡位的湿地松林分在板页岩红壤中的生长表现要显著优于四纪红壤中的。不同母质土壤的湿地松林分受坡位影响程度不同,但生长指标都一致呈现出下坡位>中坡位>上坡位的趋势;四纪红壤中,下坡位林分平均胸径分别高出上坡位、中坡位林分的10.6%和4.0%;板页岩红壤中,下坡位林分平均胸径高出上坡位林分的45.6%,高出中坡位林分的22.2%,差异达极显著(P<0.01)。总体上在不同母质土壤中生长的湿地松林分生长量差异显著,并且板页岩红壤湿地松林分坡位间生长量差异大,四纪红壤湿地松林分坡位间生长量差异较小。 相似文献
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美国卡罗莱纳州南部海岸地区火炬松立地质量评价(英文) 总被引：2，自引：0，他引：2
Eleven soil types, which can be identified and delineated using conventional soil survey procedures, were characterized for loblolly pine （Pinus taeda L.） productivity. Four 4-hectare study sites, each containing four measurement plots, were established for every soil type studied. In a stepwise multiple regression, both soil parent material （i.e. a combination of subsoil texture and geology） （p〈0.001）, and drainage class （p=0.006） were significant predictors of site index （tree age 25）, and the overall linear regression model had an R2 value of 0.55. The extremes of soil parent material differed by 3.9 m site index （loamy subsoil on the Wicomico-Penholoway surfaces versus clayey subsoil on the Pamlico-Princess Anne surfaces）. Each increment of drainage class differed by 0.7 m site index. For example, a poorly drained soil had 0.7 m lower site index than a somewhat poorly drained soil. For seven of the eleven soil types studied, there is greater than 80% probability that estimated mean site index is within ±0.8 m of the actual soil type mean site index. The other four soil types （labeled G, I, C and K） need to be either redefined or sampled more intensively. Two of these need to be subdivided in order to adequately characterize site quality, one based on geology （Soil type G） and one based on soil drainage class （Soil type I）. Variation in soil drainage class and varying amounts of topsoil displaced into windrows were both factors influencing site quality variation of a third soil type （Soil type C）. The wide variation in site index data for a fourth soil type （Soil type K） appeared to be due, in part, to sampling study locations and individual measurement plots with less than optimum bedding and/or artificial drainage. Soil parent material （subsoil texture and geology） along with drainage class were found to be important factors influencing site quality on the South Carolina Lower Coastal Plain. 相似文献
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广西大青山石灰岩山土壤理化性质的演变及其造林绿化 总被引：4，自引：3，他引：4
研究得知:该范围的石山(石灰岩山)上,在北热带气候及植被条件相互作用下,演变为一类特别肥沃的土壤——石灰土;该类土壤有机质及氮素丰富,保蓄水性能强;钙、镁、钾、铁、锰、锌等元素含量也十分丰富,故称“热带黑钙土”;石山石多土少,整体环境恶劣,而局部生境却十分优越,又因该区雨量充沛,即使石山中的石缝、石槽内,只保存5％土质,上面就会覆盖较繁茂的草、灌植被,其中不少具有较高的经济价值,同时,也易于栽培喜钙、喜肥的优良或珍贵树种。 相似文献
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Rondy J. Malik 《Forest Pathology》2019,49(3)
The “Gadgil effect” hypothesizes that root associations may slow down decomposition through pre‐emptive competition. In the context of recalcitrant litter decomposition, specifically coarse wood debris, it is uncertain as to what is the relative importance of soil communities associated with living roots when compared to those without roots. Here, it is hypothesized that the presence of live roots and active photosynthates will enhance wood decomposition. To test this hypothesis, the presence or absence of temperate tree roots was used in this study. Sugar maple (Acer saccharum) and white oak (Quercus alba) roots were manipulated at three sites of either limestone or shale parent rock residuum. At each site, wood substrate was placed in soils beneath the canopy of either A. saccharum or Q. alba, while in the presence of roots (root+). At the same time, wood substrate was placed in the same soil community, but live root exposure was eliminated by trenching (root?). This eliminated active photosynthate supply to the soil microbial community. Results determined that live root exposure promoted faster decomposition and greater mycelial colonization of wood substrate. Also, sites of shale parent rock residuum had higher rates of decomposition in comparison with limestone parent rock residuum. Although additional work is needed to determine the extent in which roots and lithology can facilitate wood decomposition, these findings suggest that living roots impact decomposers and provide a pathway towards humus and soil organic matter formation. 相似文献
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昆明市野鸭湖景区的土壤特性研究 总被引：1，自引：1，他引：1
通过对昆明市野鸭湖景区不同的植被类型及土壤类型设样调查。其调查研究的结果表明:该景区的主要土壤类型有山地红壤、山地黄红壤、黄壤、黄棕壤、黄色砂壤等5种类型,红壤、黄红壤、黄壤基本各占1/3,土壤质地大多数是粘壤土。主要成土岩石有石灰岩、砂岩、变质岩(板岩、片岩)、红色砂岩、紫色砂岩等,主要成土母质有残积母质、坡积母质等类型;为酸性土壤,土壤的有机质含量较低,缺乏有效氮,严重缺乏有效磷,土壤交换性能较差,肥力偏低,且土壤的侵蚀现象明显。据此,应防止景区植被的进一步破坏。 相似文献