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   基础土壤呼吸活性 的翻译结果: 查询用时:0.018秒
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基础土壤呼吸活性
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  basal soil respiration
     The characteristics of soil physical, chemical and biological properties of sandy grassland in natural restoring processes after different grazing intensity disturbance were studied. Contents of organic carbon, total nitrogen and phosphorus, available nitrogen and phosphorus, and basal soil respiration in topsoil among different treatments have significant differences: post-moderate-grazing restoration plot>post-light-grazing restoration plot>non-restoration plot>post-heavy-grazing restoration plot.
     通过对科尔沁沙质草地不同强度放牧后自然恢复过程中土壤的物理、化学和生物学性状特征的研究 ,结果表明 ,土壤有机碳、全氮、全磷、有效氮和速效磷含量以及基础土壤呼吸活性在各处理表层土壤的特征为 :中牧后恢复草地 >轻牧后恢复草地 >无牧恢复草地 >重牧后恢复草地 ;
短句来源
  相似匹配句对
     The soil enzyme activity was strengthened.
     土壤酶的活性增强。
短句来源
     Study on Soil Respiration in a Greenhouse
     日光温室土壤呼吸研究
短句来源
     A research review on soil active organic carbon
     土壤活性有机碳
短句来源
     Their survival rate declines, the activity and respiratory rate of arsenic-polluted soil decline, too.
     砷污染土壤活性降低,土壤呼吸强度下降。
短句来源
     Soil Respiration in Grassland Communities in the World
     草地群落的土壤呼吸
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  basal soil respiration
Among forest, savanna, and plough land, basal soil respiration was maximum in the forest, but the microbial metabolic quotient (qCO2 was estimated to be at a minimum in the forest and at a maximum in the plough land.
      
Basal soil respiration was less sensitive than substrate-induced respiration to contamination.
      
Higher organic C and total N, microbial biomass C, basal soil respiration and activities of dehydrogenase and alkaline phosphatase were observed in treatments with tree-crop combination than in the treatment without trees.
      
The average microbial biomass C (MBC), average basal soil respiration (BSR), and average fluorescein diacetate hydrolyzing activity (FDHA) were lowest during the summer season, indicating a negative influence of soil salinity.
      
However, with high endophyte infection, microbial biomass and basal soil respiration per unit of soil organic C or particulate organic C were 86 ± 5% of those with low endophyte infection.
      
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The characteristics of soil physical, chemical and biological properties of sandy grassland in natural restoring processes after different grazing intensity disturbance were studied. Contents of organic carbon, total nitrogen and phosphorus, available nitrogen and phosphorus, and basal soil respiration in topsoil among different treatments have significant differences: post-moderate-grazing restoration plot>post-light-grazing restoration plot>non-restoration plot>post-heavy-grazing restoration plot. Soils in...

The characteristics of soil physical, chemical and biological properties of sandy grassland in natural restoring processes after different grazing intensity disturbance were studied. Contents of organic carbon, total nitrogen and phosphorus, available nitrogen and phosphorus, and basal soil respiration in topsoil among different treatments have significant differences: post-moderate-grazing restoration plot>post-light-grazing restoration plot>non-restoration plot>post-heavy-grazing restoration plot. Soils in post-heavy-grazing restoration plot exhibit higher bulk density and pH values, and lower Catalase, Urease, and alkaline Phosphatase activities compared to other plots. Soil nutrients and enzymes in sandy grassland concentrate in the upper layer of the profile and decrease with depth. The effects of grazing livestock on soil properties occurred in the 0~7.5 cm soil layer. Heavy grazing has overtaken the threshold of sandy grasslands carry capacity and the threshold of resistance to disturbance, which worsens soil properties and weakens resilience. However, moderate grazing enhances the cycling of soil nutrient materials and favors the maintenance and improvement of soil fertility and soil resilience.

通过对科尔沁沙质草地不同强度放牧后自然恢复过程中土壤的物理、化学和生物学性状特征的研究 ,结果表明 ,土壤有机碳、全氮、全磷、有效氮和速效磷含量以及基础土壤呼吸活性在各处理表层土壤的特征为 :中牧后恢复草地 >轻牧后恢复草地 >无牧恢复草地 >重牧后恢复草地 ;重牧后的恢复草地表层土壤较其它处理有较高的土壤容重和pH值以及较低的过氧化氢酶、脲酶和碱性磷酸酶活性 ;沙质草地的土壤养分和生物学活性在剖面中的分布为上高下低 ,主要富集于 0~ 2 5cm表层 ,放牧对土壤系统的影响主要表现在 0~ 7 5cm土层。重度放牧使沙质草地超出了其承载能力和承受干扰的阈限 ,土壤性状恶化 ,恢复力降低 ;而适度的放牧后恢复有利于土壤化学和生物学性状的保持和提高

Soil quality is a synthesis of many physical, chemical and biological properties of soils and of some important processes of forming these properties 〔1〕 . The biological properties of soils can sensitively reflect the change of the soil quality and health 〔2〕 . Therefore, it is increasingly paid an attention to that the parameters of soil biological properties, such as the microorganism biomass, composition of microorganism communities and their biodiversity, and active enzyme, are used to characterize...

Soil quality is a synthesis of many physical, chemical and biological properties of soils and of some important processes of forming these properties 〔1〕 . The biological properties of soils can sensitively reflect the change of the soil quality and health 〔2〕 . Therefore, it is increasingly paid an attention to that the parameters of soil biological properties, such as the microorganism biomass, composition of microorganism communities and their biodiversity, and active enzyme, are used to characterize the change and dynamics of soil quality 〔2~5〕 . The research on the desertification evolution of the physicochemical properties of farmland soils has been carried out in Horqin Sandland where desertification is serious 〔6〕 . This paper analyzes the desertification evolution of the biological properties of soil quality by researching the activation of soil enzyme and of basal soil respiration in the rainfed farmland of Horqin Sandland in the desertification process. The results show that the response of the activation of soil enzyme and the basal soil respiration are sensitive to the environmental change in the desertification process. The activation of catalase, urease and alkaline phosphatase related to the soil physicochemical fertility factors and the basal soil respiration are reduced with the increase of the desertification degree. The soil enzyme activation and respiration activation have a strongly positive correlation with the soil organic matter and the content of N and P nutrients, and, therefore, can be regarded as the important supplementary indicators of the change of soil quality properties in the desertification process.

通过研究处于沙漠化过程中的科尔沁沙地旱作农田土壤酶活性与基础土壤呼吸活性 ,分析了土壤质量生物学特性的沙漠化演变。结果表明 ,土壤酶活性与基础土壤呼吸对沙漠化过程中环境的变化反应敏感 ,随着沙漠化程度增加 ,与土壤物理化学肥力因素有关的过氧化氢酶、脲酶和碱性磷酸酶的活性和土壤呼吸活性随之下降。土壤酶活性和呼吸活性与土壤有机质和养分有极显著的相关 ,在一定程度上可以用酶活性和呼吸强度表征有机质和养分的状况及其数量的变异 ,因此 ,可以作为农田沙漠化演变中土壤质量特征变化的重要辅助指标

 
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