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土壤森林
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  soil forest
     In the face of new situation and toward the continuous system of atmosphere soil forest, the forest meteorology research should be carried out more deeply on the relationship between the forest ecosystem and human beings, both microcosmically and macrocosmically, locally and globally.
     森林气象学的研究必须适应新形势 ,针对大气 土壤 森林这个连续系统 ,从宏观到微观 ,从局地到全球开展森林生态系统与人类关系的深入研究 .
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  相似匹配句对
     Forest,Soil and Water
     森林土壤和水
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     Summarization of Forest Soil Fertility
     森林土壤肥力概述
短句来源
     The View of Forest Value
     森林的价值观
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     A Portrait of Forest
     森林的肖像
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  soil forest
(4) Groundwater level rose during early Medieval times because of a wetter climate and alder carr replaced the dry-soil forest close to the site.
      
Ectomycorrhizas of 5-month-old Pinus patula plants grown in autoclaved shola soil (forest soil) inoculated with basidiospores of Thelephora terrestris are described.
      
Ectomycorrhizas of 5-month-old Pinus patula plants grown in autoclaved shola soil (forest soil) inoculated with basidiospores of Amanita muscaria, Laccaria laccata and Suillus brevipes are described.
      
Ectomycorrhizas of 5-month-old Pinus patula plants grown in autoclaved shola soil (forest soil) inoculated with basidiospores of Rhizopogon luteolus and Scleroderma citrinum are described.
      
Direct measures of production in Amazonian Peru show that two terra firma forest types produced significantly less edible fruit than an alluvial soil forest.
      
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Since 1970s,remote sensing techniques have developed fast and have been applied to a lot of subjects,such as geology,geography,soil,forestry and gra-ssland science.The application of it to grassland resource investigation is to sur-vey the types,distributions,quantities and qualities of grassland.Comparing to the post methods of investigation,there are many advantages to investigate grassland resource using remote sensing techniques.First,it,can shorten the investigation period.Second,it,can simplify the technological...

Since 1970s,remote sensing techniques have developed fast and have been applied to a lot of subjects,such as geology,geography,soil,forestry and gra-ssland science.The application of it to grassland resource investigation is to sur-vey the types,distributions,quantities and qualities of grassland.Comparing to the post methods of investigation,there are many advantages to investigate grassland resource using remote sensing techniques.First,it,can shorten the investigation period.Second,it,can simplify the technological processes of

七十年代以来,遥感技术发展十分迅速,它广泛地应用于地质、地理、土壤、森林、草地等多种学科。草地资源遥感调查就是利用遥感技术调查草地的数量、质量和分布,它更新了常规调查的方法和手段,缩短了调查周期,改变了草地资源图件的制图工艺和流程,提高了总体调查的准确性。新一代陆地资源卫星遥感影像的应用,明显提高了地类的可判性和判读精度,增加了各类草地面积数据的可靠性,特别是经过 TM 波段比较值处理和 TM 缨帽变换等处理后的影像,质量较高,其解译精度完全符合大面积草地资源调查的精度要求。

This paper take the valley as a unit,select 17 middle valleies research much factors withrelation to sediment discharge of rivers. The factors included geology,land feature,soil,fores coverdegree,plant cover degree,reclaim and cultivate waste land of dry farm,per capita output of grain,per capita income of economy,people’s cultural level, per capita output value of town and townshipenterprises,per capita output agriculture and per capita GNP at all,the paper established mathemati-cal model for every single and...

This paper take the valley as a unit,select 17 middle valleies research much factors withrelation to sediment discharge of rivers. The factors included geology,land feature,soil,fores coverdegree,plant cover degree,reclaim and cultivate waste land of dry farm,per capita output of grain,per capita income of economy,people’s cultural level, per capita output value of town and townshipenterprises,per capita output agriculture and per capita GNP at all,the paper established mathemati-cal model for every single and compound factors with sediment discharge of rivers,the results thatthe best remarkble factor of influencing sediment disch arge is cultivate waste land of dry farm ,for-est cover degree,and populatiom density,secondly that is per capita output of grain and type of soil.The sediment discharge of rivers with cultivated waste land of dry farm,population density are indirect proportion,it with forest cover degree,per capita output of grain are inverse proportion.

该研究以流域为单元,选定17个中等流域,研究各流域地质、地貌、土壤、森林覆盖率、植被覆盖率、降雨量、旱坡耕地垦殖率、土壤垦殖率、人均占有粮食、人均纯收入、人口文化素质、人均乡镇企业产值、人均农业产值以及人均国民生产总值等多因素与河流输沙量的关系,建立了各单因素及复因素与输沙关系的数学模型。研究结果表明,影响河流输沙最显著的因素为旱坡耕地垦殖率、森林覆盖率和人口密度,其次为人均占有粮食和土壤类型。河流输少量与旱坡耕地垦殖率、人口密度成正比,与森林覆盖率、人均占有粮食成反比。

According to the factors such as, climates,soil and forest types,the forest ofHenan Province was divided into two forest vegetation regions and eight forest ecosys-tems.Based on forest ecosystem classification,the stability of each forest ecosystem typewas studied by using the method of grey clustering analysis to selecte six indices which af-fected the stability of forest ecosystem. The results showed that :1)Wind and sands break-ing forest ecosystem in Huang Huai plain and evergreen and leaf-fall broadleaf...

According to the factors such as, climates,soil and forest types,the forest ofHenan Province was divided into two forest vegetation regions and eight forest ecosys-tems.Based on forest ecosystem classification,the stability of each forest ecosystem typewas studied by using the method of grey clustering analysis to selecte six indices which af-fected the stability of forest ecosystem. The results showed that :1)Wind and sands break-ing forest ecosystem in Huang Huai plain and evergreen and leaf-fall broadleaf forestecosystem in Nanyang Basin were stable types.2)Leaf-fall broadleaf forest ecosystem inmountain and hilly regions of Tai Hang was fragil3)Leaf-fall broadleaf forest ecosystemin the loess hilly regions of west Henan Province was relatively fragile type.4)Leaf-fallbroadleaf forest ecosystem on the north slope of Funiu Mountains was mid-stable type.5)Low-waterlogging farmland protection forest ecosystem in Huai Bei areas evergreen andleaf-fall broadleaf forest ecosystem on the south slope of Funiu Mountains ,and evergreenleaf-fall broadleaf forest ecosystem in Tong Bai and Da Rie mountain regions were relative-ly stable type.

根据气候、土壤、森林类型等因素,将河南省森林划分为2个森林植被区和8个森林生态系统类型区。在此基础上,选取影响森林生态系统稳定性的6个主要参数,运用灰色聚类的方法,对河南省诸森林生态系统类型进行稳定性分析。结果表明:1)黄海冲积平原防风固沙林森林生态系统和南阳盆地常绿、落叶阔叶林森林生态系统属于稳定类型。2)太行山山地丘陵落叶阔叶林森林生态系统属脆弱类型。3)豫西黄土丘陵落叶阔叶林森林生态系统属较脆弱类型。4)伏牛山北坡落叶阔叶林森林生态系统属中等稳定类型。5)淮北低洼易涝农田防护林森林生态系统、伏牛山南坡常绿、落叶阔叶林森林生态系统和大别、桐柏山地常绿、落叶阔叶林森林生态系统属较稳定类型。

 
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