The Selecting of Optimum Planting Density for Caragana spp. Plantation Management on Degradative Grassland in Ningxia: Base on Shrubby Root Distribution

机译：柠条最佳种植密度的选择。基于灌木根分布的宁夏退化草地人工林经营

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Shrubby plantation. for land degradation control, with overhigh planting density could exacerbate soil water deficit. and limit the development of autochthonic plants which play an important role on preventing wind erosion. In order to explore the potential competition status between Caragana spp. with autochthonic plants, we studied with alley plantations of Caragana spp. with 3 planting densities (PDs), 4000 hm-2. 2857 hm.2 and 2222 hm-2. on degradative grassland in Ningxia, by analyzing shrubby root distribution. The result showed Caragana spp. fine roots were denser in plantation with 4000 hrr1.2 of PD. and average fine root surfacearea density (FRSD), cumulate percents of fine root surfacearea in topsoil (from ground to 40 cm depth) and FRSD in the central soil of alley woodland, were decreased as planting density decreasing. In Caragana spp. plantation with 2222 hm-2 of PD. there were fewer fine root in the topsoil and central soil. than with higher PDs. which indicate interspecies competition between Caragana spp. with autochthonic plants, and intraspecies competition among Caragana spp., are more mitigative in that status. Consequently, 2222 hm-2 can be comparatively suited for Caragana spp. plantation management in study area, because of that plantation also can control wind erosion effectively.

机译：矮小的人工林。为了控制土地退化，种植密度过高会加剧土壤缺水。限制了在防止风蚀中起重要作用的自声植物的发展。为了探索柠条锦鸡儿之间的潜在竞争地位。对于自生植物，我们研究了柠条锦鸡儿的胡同。 3种种植密度（PDs），4000 hm-2。 2857 hm.2和2222 hm-2。通过分析灌木根系的分布，研究宁夏退化草地的生态环境。结果显示柠条锦鸡儿。人工林中4000 hrr1.2的PD的较细根更密。随着种植密度的降低，平均细根表面积密度（FRSD），表土（从地面到40 cm深度）中细根表面积的累计百分比和中部林地中部土壤的FRSD都降低了。在柠条属植物中。人工林2222 hm-2的PD。表土和中央土壤的细根较少。与更高的PD相比。这表明柠条锦鸡儿之间的种间竞争。带有自生植物的植物，以及柠条属植物之间的种内竞争，在这种情况下更为缓解。因此，2222 hm-2可以比较适合柠条锦鸡儿。研究区的人工林管理，因为这种人工林还可以有效地控制风蚀。

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来源
《2010 International conference of international conference on combating land degradation in agricultral areas.》|2010年|p.205-209|共5页
会议地点 Xian City(CN);Xian City(CN);Xian City(CN)
作者
Shugao Qin; Bin Wu; Yuqing Zhang;
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作者单位

College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China;

College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China;

Ningxia Yanchi Research Station of State Forestry Administration, Beijing Forestry University, Beijing 100083, China;

College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China;

Ningxia Yanchi Research Station of State Forestry Administration, Beijing Forestry University, Beijing 100083, China;

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原文格式 PDF
正文语种 eng
中图分类环境规划与环境管理;环境规划与环境管理;
关键词
shrubby plantation; land degradation control; planting density; Caragana spp.; root distribution;

机译：灌木丛土地退化控制；种植密度柠条根分布;

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1. Relationship of soil erodibility, soil physical properties, and root biomass with the age of Caragana korshinskii Kom. plantations on the Hilly Loess Plateau, China. [J] . Li Qiang, Liu GuoBin, Xu MingXiang, Arid Land Research and Management . 2014,第3期

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2. Genetic diversity, community structure and distribution of rhizobia in the root nodules of Caragana spp. from arid and semi-arid alkaline deserts, in the north of China. [J] . Li M, Chen WF, Sui XH, Systematic and Applied Microbiology . 2012,第4期

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4. The Selecting of Optimum Planting Density for Caragana spp. Plantation Management on Degradative Grassland in Ningxia: Base on Shrubby Root Distribution [C] . Shugao Qin, Bin Wu, Yuqing Zhang International conference of international conference on combating land degradation in agricultral areas . 2010

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The Selecting of Optimum Planting Density for Caragana spp. Plantation Management on Degradative Grassland in Ningxia: Base on Shrubby Root Distribution

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