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, 2004 Five morphologically distinct bacteria isolated from mangrove sediment by enrichment culture, were identified and tested for their ability to degrade dimethyl terephthalate （DMT） and its isomer dimethyl isophthalate (DMI). DMT at a concentration of 98 mg/
Gu, J, Li, J
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Effects of Different Plant Spacings on Preferential Flow Development Characteristics of Vetiver Plant Slopes [PDF]
, 2022 [Objective] The development characteristics of preferential flow for a vetiver slope and the relationship between vetiver roots and preferential flow were analyzed in order to provide a theoretical basis for further study on the influence of plant roots ...
Jiang Xueliang +4 more
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Effects of Native Forest Conversion on Soil Labile Organic Carbon and Enzyme Activity in Northwestern Hunan Province [PDF]
, 2023 [Objective] The response of soil labile organic carbon components and enzyme activities to natural forest conversion was analyzed in order to provide a scientific basis for predicting regional soil health evolution and environmental change.
Li Xue +5 more
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Shuitu Baochi Xuebao, 2023 为分析不同林龄亚热带常绿阔叶次生林和杉木(Cunninghamia lanceolata)种植对土壤氮淋溶的影响,采用土柱微宇宙原位培养,分别比较9年生和45年生次生林(以米槠Castanopsis carlesii为建群种)之间、米槠和杉木人工林(均为9年生)之间的土壤总氮、硝态氮和铵态氮浓度及通量。结果表明:(1)4种类型森林土壤总氮和硝态氮浓度均表现为45年生次生林＞9年生次生林＞杉木人工林＞米槠人工林;铵态氮浓度则为45年生次生林＞杉木人工林＞9年生次生林＞米槠人工林。(2 ...
宣美林 +6 more
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Construction of Ecological Security Pattern in Ecological Barrier Zone of Loess Plateau Based on “Importance-Sensitivity-Landscape Features” [PDF]
, 2022 [Objective] The relationship between ecological spatial network structure and soil conservation was analyzed in order to provide countermeasures and suggestions for improving ecosystem services in the Loess Plateau barrier region.
Liu Hongjun +5 more
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Zhejiang Daxue xuebao. Lixue ban, 2014 以样方法对不同资源位群落进行调查，通过计算群落的生态位宽度、生态位相似性比例和生态位重叠值，分析浙江省7个自然保护区18个常绿阔叶林的12个优势种的生态位特征，探讨了各优势种群在次生林和原生林中生态位宽度、相似性和重叠的差异，比较了乔木树种与小乔木或灌木生态位宽度的差异.结果表明：(1)浙江省各保护区的常绿阔叶林多以木荷或甜槠为建群种或共优种，具有典型的中亚热带常绿阔叶林生态位相似性比例高的特点，且生态位重叠程度较低；(2)次生林中各种群的生态位宽度明显高于原生林 ...
WANJuan(万娟) +6 more
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Shuitu Baochi Xuebao, 2022 黄土高原地区是我国水土流失和环境问题严重的地区之一,人工植被恢复可以有效改善土壤性质,提高土壤质量,明确长期人工植被恢复后土壤水分和养分性质的响应差异,有利于进一步有效改善生态环境。选取晋西黄土区自然恢复的次生林地、人工刺槐林地、人工油松林地3种典型植被恢复类型为研究对象,通过测定土壤物理性质以及有机碳、氮磷钾元素含量等土壤养分,对比分析长期不同人工林恢复条件下的差异。结果表明:(1)次生林地、刺槐林地和油松林地在0-20 cm浅层土壤的容重分别1.15,1.04,1.06 g/cm3 ...
熊瑛楠, 冯天骄, 王平, 吴旭东
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Shuitu Baochi Xuebao, 2023 为揭示亚热带森林土壤N2O排放对林分类型和氮添加的响应特征,选取位于福建省三明市的中亚热带米槠次生林、杉木人工林和马尾松人工林土壤为研究对象,分别设置无氮添加(N0 mg/kg)、低氮添加(N10 mg/kg)、中氮添加(N25 mg/kg)和高氮添加(N50 mg/kg)4个氮添加水平,进行微宇宙培养试验,测定土壤N2O排放。结果表明:与无氮添加处理相比,氮添加整体上降低3种林分土壤pH,增加土壤NH4+-N和NO3--N含量。无氮添加处理中杉木人工林和马尾松人工林土壤N2O累积排放量分别为9 ...
邓米林 +5 more
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Shuitu Baochi Xuebao, 2022 森林对降雨的分配是森林生态水文和生物地球化学循环中的重要过程之一。通过对黄土丘陵区2种典型林分(刺槐林和辽东栎林)生长季降雨分配过程的实地监测,探究2种林分的降雨分配特征及其主要影响因素。结果表明:试验期间,刺槐林和辽东栎林降雨分配各组[JP]分均表现为穿透雨量(325.0,295.1 mm)＞冠层截留量(39.8,73.6 mm)＞树干径流量(25.8,21.9 mm),同时穿透雨率(83.2%和75.6%)＞冠层截留率(10.2%和18.8%)＞树干径流率(6.6%和5.6 ...
王淑春, 程然然, 杜盛
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Shuitu Baochi Xuebao, 2020 选择山杨栎类次生林（以下简称次生林）、刺槐林、侧柏林、油松林为研究对象，通过样地调查，结合室内浸泡方法，对比分析枯落物（未分解层、半分解层）的水文特征指标，研究典型林分枯落物层水文生态特性。结果表明：（1）枯落物厚度为3.93~4.95 cm，刺槐林最大，油松林最小；蓄积量为次生林最大（19.28 t/hm2），侧柏林（18.03 t/hm2）和刺槐林（17.57 t/hm2）次之，油松林最小（14.73 t/hm2），未分解层蓄积量小于半分解层。（2）枯落物最大持水量（率）为30.92~61.31 t/
马晓至 +6 more
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