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荒漠化     
相关语句
  desertification
     Study on Dynamic Change of Vegetation and Desertification in Oasis Based upon RS and GIS Techniques
     基于RS和GIS的绿洲植被与荒漠化动态研究
短句来源
     Study on Mechanism of Desertification and Evaluation of Ecologic Environment in Bashang, Hebei Province
     河北省坝上土地荒漠化机制及生态环境评价
短句来源
     Study on Land Desertification and Eco-Environmental Evolvement in the Songnen Plain Abstract
     松娕平原土地荒漠化与生态环境变化研究
短句来源
     Study on Executive Mechanism of Policy of Combating Desertification in Inner Mongolia
     内蒙古荒漠化防治政策执行机制研究
短句来源
     Study on Dynamic Monitoring of Desertification and Land Production Evaluation on the Interlaced Area of Agriculture and Pasture in Northern Shaanxi
     陕北农牧交错带土地荒漠化动态监测与生产力评价研究
短句来源
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  sandy desertification
     "3S"TECHNOLOGY APPLICATION TO DYNAMIC INVESTIGATIONOF SANDY DESERTIFICATION LAND
     “3S”技术在沙质荒漠化土地动态监测中的应用
短句来源
     ⑤The expanded area of sandy desertification land is 9 967.54 hm2,and the most is in middle part,the second in the north and the third in the south.
     ⑤沙质荒漠化扩展面积为9 967.54hm2,其中中部>北部>南部;
短句来源
     Remote Sensing Analysis on Dynamic Change of Sandy Desertification Land in North China
     中国北方沙质荒漠化土地动态变化遥感分析
短句来源
     Sandy Desertification in West of Northeast China Plain in the Past 10 Years
     东北平原西部沙地近10年的沙质荒漠化
短句来源
     Evaluation of Productivity Based on the Distributed Dynamic Model of Soil Water in Sandy Desertification Area
     基于土壤水分分布式动态模型的沙质荒漠化地区生产力估算
短句来源
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  deserting
     An Economic Study on the System of Dust-storm and Deserting
     沙尘暴与荒漠化制度经济学分析
短句来源
     Land deserting and low management benefit are the principal contradiction in protecting ecological environment and agricultural development in Xinjiang.
     土地荒漠化、经营效益低下是新疆生态环境保护、农业发展中存在的突出矛盾。
短句来源
     Countering Tarim river vally environment worsening,imbalance of grassland development and utilization,grassland deserting seriously day by day,it raises specific plan and comprehensive harnessing programme.
     针对塔里木河流域环境恶化、草地开发利用失衡、草原荒漠化日趋严重的问题,提出具体规划和综合治理方案。
短句来源
     This experiment is a good beginning to start CDM forest project in deserting area.
     通过分析有关数据得出林木吸收二氧化碳情况,为在中国荒漠化地区开展CDM造林项目进行了试点性工作,并取得良好开端。
  desertification mechanism
     With the support of remote sensing and GIS as well as related techniques,land desertification mechanism and process are studied. At the same time,building up monitoring and forecasting danger system of desertification disasters has an important significance for ecological construction in Xinjiang.
     在遥感、地理信息系统等技术支持下 ,研究新疆土地荒漠化的孕灾机理及过程 ,建立土地荒漠化灾害的监测及预警系统 ,对于新疆生态环境建设具有重要意义。
短句来源
     Among these the study of desertification mechanism and the processing of mass movement are the basic for sustained study, it is necessary to rehabilitate and recover ecologically such degraded areas in the field of landscape (and or land use) changes and simulates, soil and water conservation.
     在研究的领域当中,荒漠化及物质迁移仍然是持续研究的基础,景观(土地利用)变化及其模拟和水土保持等生态恢复研究是针对性较强的研究内容;
短句来源

 

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      desertification
    To promote afforestation in sandy lands and increase the effects of prevention and control of desertification, the application of a new drought-resistant product-solid water and foliar fertilizer "Shifengle"-was studied.
          
    This result agreed with the phenomenon of desertification reversion, vegetation restoration and dominant communities' formation.
          
    Assessment of Soil Cover Degradation and Desertification in Northern Lowland Dagestan
          
    New principles of the assessment of soil cover degradation and desertification, the scale and intensity of destructive processes manifestation are determined.
          
    The socioeconomic consequences of desertification in central Asia
          
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      sandy desertification
    The evaluation index system of Keerqin sandy desertification was established by using Remote Sensing data, and the occupation ratio of bare sandy land was obtained by mixed spectrum model.
          
    Spatial distribution of sandy desertification change in the west of Jilin Province
          
    The results demonstrate that the sandy desertification has been partly controlled in the past twenty years, except some small sites.
          
    Progress in sandy desertification research of China
          
    Sandy desertification is land degradation characterized by wind erosion mainly resulted from the excessive human activities in arid, semiarid and part of sub-humid regions in northern China.
          
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      deserting
    Intra-pair conflicts are augmented by inter-pair conflicts when pairs meet, when all four individuals may be sexually attracted to one member of the other pair while seeking to prevent their mate from copulating, or deserting, with the other.
          
    Future work, preferably by experimentally manipulating the body condition of penduline tits, is needed to test how body condition influences caring/deserting decisions in this puzzling avian system.
          
    The unstable runaway behaviour is subsequently quenched by investors deserting a collapsing market or saturating a booming one.
          
    In contrast, we found no evidence that brood desertion increased the survival of females: there was no difference in local survival rate (return rate) for females deserting before or after 6 days brood age.
          
    Though predation risk from the hosts was low, the risk of being attacked by the falcons was high, which we suggest explains why the likelihood of geese deserting their nests was negatively correlated with distance from the eyries.
          
    更多          
      desertification mechanism
    The desertification mechanism in each geographical condition has been understood in the target area.
          


    According to the differences of mesophyllous structure, the forty-three plant species observed are divided into six types: reduced, normal, ring-palisade, total-palisade, irregular and grass type. This indicates that plants found in the same region may adapt to their environment in various ways, even the structure as an adaptive characteristic, is not one model only. Plants growing in desert steppe are partly typical mesomorphic and some of them are typical xeromorphic, but most of them are intermediate between...

    According to the differences of mesophyllous structure, the forty-three plant species observed are divided into six types: reduced, normal, ring-palisade, total-palisade, irregular and grass type. This indicates that plants found in the same region may adapt to their environment in various ways, even the structure as an adaptive characteristic, is not one model only. Plants growing in desert steppe are partly typical mesomorphic and some of them are typical xeromorphic, but most of them are intermediate between mesomorphic and xeromorphic, It is a reflection of the transitive ecologicol environment of desert steppe.

    本文所研究的43种植物依据叶肉结构的差异可分为退化、正常、环栅、全栅、不规则、禾草六种类型。这说明生长在同一地区的植物对环境的适应有多种方式。就是以结构作为适应特征的表现,也不是一个模式,在荒漠化草原中的植物,部分是典型中生的,部分是典型旱生的,而大多数是介乎二者之间的过渡类型,植物叶内部结构从中生向旱生过渡正是对荒漠化草原过渡生态环境的反映。

    Populus cuphratica is an available species to combat desertification in arid areas and in depressions with saline-alkali soil, the plant is characterized by the biological specific property of saline-alkali - resistance. It grows well on the soil whre PH value is about 7.3-9.1. Some concrete measures for growing seedlings of populus euphratica under the plastic cover on the heavy saline-alkali soil are presented in the study.

    胡杨是干旱荒漠和低湿盐碱地区,防治土地荒漠化的好树种,因它具有耐盐碱的生物学特性,PH值为7.3—9.1间的土壤上生长良好。本文主要介招了胡杨在盐碱严重地区用地膜覆盖育苗的几项具体措施。

    There are meadow soil、bog soil、brown desert forest soil in the north of Tarim basim. The hydromorphic soil through process: humic oxidation-reduction、 gleying、illuvill CaCO_3 saline. The meadow soil includes sub-group meadow soil、light meadow soil、desert meadow soil. The bog soil includes sub-group meadow bog soil pet bog; brown desert forest soil includes sub-group meadow brown desert forest soil、brown desert forest soil、desert brown desert forest soil. The people use the livestock husbandry on the meadow...

    There are meadow soil、bog soil、brown desert forest soil in the north of Tarim basim. The hydromorphic soil through process: humic oxidation-reduction、 gleying、illuvill CaCO_3 saline. The meadow soil includes sub-group meadow soil、light meadow soil、desert meadow soil. The bog soil includes sub-group meadow bog soil pet bog; brown desert forest soil includes sub-group meadow brown desert forest soil、brown desert forest soil、desert brown desert forest soil. The people use the livestock husbandry on the meadow soil, light meadow soil meadow bog soil; develop foresty on the brown desert forest soil and mea- dow brown desert forest soil; be engaged in farming on the desert meadow soil desert brown forest soil. We should make things better of water conservancy faclities, tighter up the management attach importance to the measure of improve- ment of soil.

    塔里木盆地北部的水成土壤有草甸土、沼泽土、棕漠林土。形成过程有腐殖质化过程、氧化还原过程、潜育化过程、CaCO_3累积过程、盐渍化过程。草甸土分为草甸土、淡草甸土、荒漠化草甸土亚类;沼泽土主要有草甸沼译土、泥炭沼泽土亚类;棕漠林土分为草甸棕漠林土、棕漠林土、荒漠化棕漠林土亚类。利用上草甸土、淡草甸土、草甸沼泽土宜牧用;棕漠林土、草甸棕漠林土宜林用;荒漠化草甸土、荒漠化棕漠林土宜农用。应搞好水利规划建设,加强管理,重视土壤改良措施。塔里木盆地北部面积辽阔,水土资源丰富,热量条件好,有宜农荒地3400万亩,草场6162万亩,胡杨林360万亩,是新疆发展农、林、牧业生产进行多种经营的重要基地。但由于本区为极端干旱的内陆荒漠地区,长期以来人们对于土壤资源的利用又不尽合理,兼之对于草场、胡杨林资源管理不当,滥垦草场、毁林开荒十分严重,致使草场面积和胡杨林面积日趋缩小,草场退化,胡杨林衰败甚为普遍,农林牧争地的矛盾日趋尖锐。本区的宜林、宜牧地和较好的宜农地主要为水成土壤,其中棕漠林土1015万亩,草甸土1244万亩,沼泽土215万亩,合计2474万亩,占荒地土壤20.5%(...

    塔里木盆地北部的水成土壤有草甸土、沼泽土、棕漠林土。形成过程有腐殖质化过程、氧化还原过程、潜育化过程、CaCO_3累积过程、盐渍化过程。草甸土分为草甸土、淡草甸土、荒漠化草甸土亚类;沼泽土主要有草甸沼译土、泥炭沼泽土亚类;棕漠林土分为草甸棕漠林土、棕漠林土、荒漠化棕漠林土亚类。利用上草甸土、淡草甸土、草甸沼泽土宜牧用;棕漠林土、草甸棕漠林土宜林用;荒漠化草甸土、荒漠化棕漠林土宜农用。应搞好水利规划建设,加强管理,重视土壤改良措施。塔里木盆地北部面积辽阔,水土资源丰富,热量条件好,有宜农荒地3400万亩,草场6162万亩,胡杨林360万亩,是新疆发展农、林、牧业生产进行多种经营的重要基地。但由于本区为极端干旱的内陆荒漠地区,长期以来人们对于土壤资源的利用又不尽合理,兼之对于草场、胡杨林资源管理不当,滥垦草场、毁林开荒十分严重,致使草场面积和胡杨林面积日趋缩小,草场退化,胡杨林衰败甚为普遍,农林牧争地的矛盾日趋尖锐。本区的宜林、宜牧地和较好的宜农地主要为水成土壤,其中棕漠林土1015万亩,草甸土1244万亩,沼泽土215万亩,合计2474万亩,占荒地土壤20.5%(除去风砂土)。为使今后水成土壤的宜林、宜牧、宜农地得到合理的利用,保护自然环境,笔者在参加新疆荒地资源综合考察工作中,着重对于这里的水成土壤进行了研究,并提出合理利用土壤资源的建议。现将初步研究成果报导如下。

     
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