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水稳性团粒
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  water stable aggregate
    Indexes including organic matter content, water stable aggregate content, mean weight diameter of water stable aggregate, aggregate degree and disperse coefficient were selected to evaluate soil anti erodibility of soil and water conservation forests component of different tree species at different ages.
    运用土壤有机质含量、水稳性团聚体含量、水稳性团粒平均重量直径、团聚度和分散系数等各项指标 ,对不同树种组成、不同林龄水土保持林的土壤抗蚀性能进行分析、评价 .
短句来源
    The soil characteristics of different land where returning farmland to forests,grass land and farmland were contrasted and researched,including soil bulk density,soil porosity,soil water stable aggregate structure and soil saturated hydraulic conductivity in Datong county of Qinghai province.
    对比研究了青海省大通县不同类型退耕还林地、草地、农田的土壤性质,包括土壤容重、土壤孔隙度、土壤水稳性团粒结构、土壤饱和导水率。
短句来源
  “水稳性团粒”译为未确定词的双语例句
    Applying stepwise regression (the fiducial degree is 0.05), the equation of soil moisture content (y) can be expressed: y= 486. 709+ 2. 061X4 + 1.786X9 - 4.451X10 (R =0.830,X4 :content of waterstable granule, X9:rain fall before 15d, X10: evaporation from water surface).
    运用逐步回归(a=0.05)方法,建立土壤含水量(y)及其影响因子(X_4为水稳性团粒含量,X_9为测土壤水前15d的降水量,X_(10)为水面蒸发量)线性方程为y=486.709+2.061X_4+1.786X_9-4.451X_(10),R=0.830。
短句来源
    Based on closing and fixing moving sand, planting grass and breeding livestock, fertilizing soil, an eco-economic shelterbelt system has been established to combat desertification in Liujiayaq desert area. The stable granule structure under hydrokiensis increases by 17% , as well as the clay granule 23% -37% . The holding water capacity enhances to 3% and organic matter increases by 25. 4% .
    在腾格里沙漠东南缘白银市刘家窑沙区实施防治荒漠化的生态防护体系建设,封沙育草,固定流沙,种草养畜,培肥地力,建设经济生态型防护林网使沙区土壤水稳性团粒结构增加17%左右,土壤粘粒物质增加23%~37%,土壤持水能力提高3%,土壤有机质增加25.4%左右。
短句来源
    The study result on soil anti-erodibility in Wuqi County,Shaanxi Province,a national experiment site for conversion from cropland,into forest land and grassland showed that all the 12 anti-erodibility indexes can be divided into 4 categories,i. e. inorganic clay,aggregate,inorganic colloid and water-stable aggregate,capable of reflecting 88.671% of the information of the eigenvalues,by means of PCA.
    国家退耕还林(草)科技示范点陕西省吴旗县的退耕地植物群落的抗蚀性试验研究结果表明:通过对衡量土壤抗蚀性的12项指标主成分分析,反映特征值大部分信息(88.671%)的主成分包括无机黏粒类、团聚类、无机胶粒类和水稳性团粒类4大类。
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  water stable aggregate
Organic matter accumulation improved soil texture, and water stable aggregate content (>amp;gt;0.25 mm) and soil porosity increased.
      


Soil improvement benefit is the most direct and essential benefit of water and soil conservation forest. The first step of evaluation is to establish index system and calculate the weights of indexes. According to the purpose of benefit evaluation and opinions of specialists, index system was defined in this paper that total objective layer was comprehensive index, criterion layer consisted of soil fertility, anti\|erodibility and anti\|sourability, and index layer was composed of soil enzyme activities, organic...

Soil improvement benefit is the most direct and essential benefit of water and soil conservation forest. The first step of evaluation is to establish index system and calculate the weights of indexes. According to the purpose of benefit evaluation and opinions of specialists, index system was defined in this paper that total objective layer was comprehensive index, criterion layer consisted of soil fertility, anti\|erodibility and anti\|sourability, and index layer was composed of soil enzyme activities, organic matter content, water stable aggregate content, mean weight diameter, pH, soil rigidity, infiltrate coefficient disperse ratio and aggregate degree. And AHP method was applied to calculate the index weights, which produced two results of single\|array adn total\|array of hierarchy. And both of them could be used to calculate the benefits.

土壤改良效益是水土保持林最直接、最基本的一项效益 ,评价的首要步骤是建立指标体系和确定指标权重 .该文依据水土保持林土壤改良效益评价目的 ,在听取和参考专家意见的基础上 ,确定指标体系的总目标层为效益评价综合指数 ;准则层为土壤肥力、抗蚀性能和抗冲性能 ;指标层为土壤酶活性、有机质含量、水稳性团粒含量和平均重量、直径、pH值、硬度、渗透系数、分散率和团聚度 .并应用层次分析法确定各项指标的权重 ,得到层次单排序和层次总排序两种结果 ,二者均可用于效益的评价计算

Indexes including organic matter content, water stable aggregate content, mean weight diameter of water stable aggregate, aggregate degree and disperse coefficient were selected to evaluate soil anti erodibility of soil and water conservation forests component of different tree species at different ages. The results showed that soil and water conservation forest played an important role in improving soil anti erodibility, especially to the topsoil. Compared with that of Chinese pine pure forests, Chinese pine...

Indexes including organic matter content, water stable aggregate content, mean weight diameter of water stable aggregate, aggregate degree and disperse coefficient were selected to evaluate soil anti erodibility of soil and water conservation forests component of different tree species at different ages. The results showed that soil and water conservation forest played an important role in improving soil anti erodibility, especially to the topsoil. Compared with that of Chinese pine pure forests, Chinese pine broadleaved mixed forests had higher soil organic matter content, and water stable aggregate content increased by 1.71%~38.53%, and soil anti erodibility was also increased with increasing stand age.

运用土壤有机质含量、水稳性团聚体含量、水稳性团粒平均重量直径、团聚度和分散系数等各项指标 ,对不同树种组成、不同林龄水土保持林的土壤抗蚀性能进行分析、评价 .结果表明 ,水土保持林对于提高土壤抗蚀性能具有重要作用 ,这种作用主要针对表层土壤而言 ;与油松纯林相比 ,油松阔叶树混交林土壤有机质含量较高 ,水稳性团聚体含量增加了 1.71%~ 3 8.5 3 % ;且随着林龄的增长 ,水土保持林土壤抗蚀性能不断增强 .

Pinus yunnanesis community, Eucalyptus maidensii Acacian.mearsnii community, Eucalyptus maidesii community were used as the researching material of relationship between structure and soil erosion of different manmade forest communities based on the techniques of standard runoff plot and outdoor investigation. The results indicated that arbor layer dominance and soil organic matter content of the soil in different ecosystem were most tightlly related to the control of soil erosion with correlation coefficient,0.96,0.97,...

Pinus yunnanesis community, Eucalyptus maidensii Acacian.mearsnii community, Eucalyptus maidesii community were used as the researching material of relationship between structure and soil erosion of different manmade forest communities based on the techniques of standard runoff plot and outdoor investigation. The results indicated that arbor layer dominance and soil organic matter content of the soil in different ecosystem were most tightlly related to the control of soil erosion with correlation coefficient,0.96,0.97, and the sequence of other structural factors second to the two factors was:canopy interception, timber volume of edificator, litter, percentage of stable water aggregate, ratio of Si/V, stemflow listed according to correlation coefficient from great to small value. E.maidensii A.meamsu mixed community showed better capacities of soil erosion control for the superiority of the community structures to other three communities. A.mearsii and P.yunnasensis grew the best hydrological ecological effect respectively for interception rate and stemflow.

以云南松、直干桉、直干桉—黑荆三种人工林群落对象 ,对不同植物群落结构与土壤侵蚀的关系进行了研究。结果表明 :在三种人工林群落中 ,直干桉—黑荆混交林群落和云南松植物群落具有较强的控制径流和土壤侵蚀的能力 ,直干桉人工林群落控制能力较差。在相同坡度和降雨条件下 ,有机质含量、乔木层盖度 ,树冠截留量 ,建群种平均材积 ,枯落物凋落量、水稳性团粒百分比等因子数值大 ,土壤侵蚀量小。乔木树种的生物学特征特性也有差异。

 
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