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不同垦复方式油茶林土壤节肢动物多样性特征 被引量:3
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作者 何振 李迪强 李密 《应用昆虫学报》 CAS CSCD 北大核心 2016年第6期1361-1368,共8页
【目的】油茶新造林特别是纯林不断骤增导致油茶林害虫发生日趋严重,食用茶油安全倍受威胁。为探索有效控制油茶林害虫发生的途径,保护分解者跳虫等土壤节肢动物多样性。【方法】基于Tullgren干漏斗法和巴氏罐法,对半垦复油茶幼林、全... 【目的】油茶新造林特别是纯林不断骤增导致油茶林害虫发生日趋严重,食用茶油安全倍受威胁。为探索有效控制油茶林害虫发生的途径,保护分解者跳虫等土壤节肢动物多样性。【方法】基于Tullgren干漏斗法和巴氏罐法,对半垦复油茶幼林、全垦复油茶幼林、全垦复油茶成林和未垦复油茶成林4种不同油茶林的20个土样和15个凋落物样中的土壤跳虫和土壤其他节肢动物多样性特征进行了研究。【结果】共分离出跳虫315头,隶属6科8属;其他土壤节肢动物11科17种295头。多样性分析结果表明,油茶成林地比幼林地土壤动物的多样性指数高,多样化的地被物有利于提高土壤动物的多样性,垦复和施肥等人为干扰显著地降低土壤跳虫的多样性,却有利于增加罐诱土壤动物的多样性,水源是土壤动物生存的关键因子,对林地跳虫和罐诱动物的多样性提高有显著促进作用。【结论】探明了不同垦复类型油茶林土壤跳虫和土壤其他罐诱节肢动物多样性特征,对合理开展油茶林垦复,发挥油茶林土壤跳虫和土壤节肢动物分解功能提供了科学依据。 展开更多
关键词 油茶林 土壤跳虫 节肢动物 多样性 垦复方式
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秋冬油茶林垦复技术
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作者 刘成书 《湖南农业》 2000年第10期7-7,共1页
油茶林适时垦复,是保持油茶籽持续高产、减少大小年差异的有效方法。其主要技术要点如下。 1.选好垦复方式 垦复有全垦、带垦、穴垦、阶梯式垦复和鱼鳞式垦复等方式。垦复时应根据地形、地势来确定垦复方式。如地形平缓的油茶地,可采取... 油茶林适时垦复,是保持油茶籽持续高产、减少大小年差异的有效方法。其主要技术要点如下。 1.选好垦复方式 垦复有全垦、带垦、穴垦、阶梯式垦复和鱼鳞式垦复等方式。垦复时应根据地形、地势来确定垦复方式。如地形平缓的油茶地,可采取水平梯式垦复或全垦方式;陡坡地,则应采取穴垦或鱼鳞式垦复方式。 展开更多
关键词 秋冬季节 油茶林 垦复技术 垦复方式 油茶籽 垦复方法 垦复深度
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Impacts of Different Land Reclamation Methods on Organic Carbon and Black Carbon in Soil in a Mine Subsided Area
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作者 曹玉红 李露露 刘崇刚 《Journal of Resources and Ecology》 CSCD 2017年第2期191-195,共5页
In this paper, changes in the amounts of organic carbon and black carbon in reclaimed soil were studied. The subsidence area was in a Xuzhou coal mining area that is part of a national land reclamation demonstration a... In this paper, changes in the amounts of organic carbon and black carbon in reclaimed soil were studied. The subsidence area was in a Xuzhou coal mining area that is part of a national land reclamation demonstration area. The significance of the paper is to explain the law of quality changes of reclaimed soil, improve the soil reclamation process and promote the sustainable use of soil in mining areas. In the study, four kinds of soils were collected using four land reclamation methods: coal gangue filling(CGF), mixed flat reclamation(MFR), mud pump filling(MPF) and fly ash filling(FAF); soil from the subsided area(SS) was used as the control. Organic carbon and black carbon on content were determined by elemental analysis, potassium dichromate titration and other methods. The result shows that reclamation methods do have an influence on the organic carbon and black carbon content in subsidence soil. The content of organic carbon and black carbon at different soil depths varies the most in FAF. Regression analysis of black carbon and organic carbon contents from the four different reclamation methods show that the levels are significant in all cases. Therefore, there is no obvious relationship between the proportion of black carbon and the accumulation of organic carbon in the study area. 展开更多
关键词 land reclamation methods mine subsided area organic carbon black carbon SOIL
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