Therefore, study on classification and evaluation of soil function is necessary.
因此，对土壤功能的分类与评价进行研究显得尤为必要。
Soil quality assessment is based on soil function with different criteria in accordance with soil types.
在以往研究中，人们一直强调以土壤物理、化学特性作为土壤质量指标。
The factors that any harm soil health and cause soil function deterioration should be forecasted and warning.
任何危害土壤健康，导致土壤功能恶化的因子都应该预测、预警。
This article also reviews the ways by which the maintainance and restoration of forest soil function and the reasonable utilization and fertility increment can be achieved.
阐述了维护、恢复森林土壤功能，合理地利用森林土壤资源，提高森林土壤生产力的途径。
Moreover, some have been found to have a valuable function in building up soil fertility.
此外，已经发现一些在提高土壤肥力方面有重要作用。
The function of forest floor on water conservation, nutrient supply, promoting biological respiratory intensity and soil development are discussed.
探讨了森林地层在水土保持、养分供应、促进生物呼吸强度和土壤发育等方面的作用。
Soil permeability is an important index of evaluating water source conservation function.
土壤入渗性能是评价土壤水源涵养功能的重要指标。
Through deducing the Green's function in a three level layer soil by complex image method, application of this method is clarified.
通过运用等值复数镜像法求出水平三层土壤中的格林函数，阐述等值复数镜像法的应用。
The fine function unadhering soil of claws of many soil animals has a practical significance for bionic research on the agricultural machines and tools.
许多土壤动物的爪趾具有优良的不粘土功能，这对农业机具减粘脱土的仿生研究，具有重要的实际意义。
The buffering function to acid rain deposition is mainly fulfilled by soil and plant.
陆地生态系统对酸沉降的缓冲作用主要由土壤和植被完成。
The function of AM fungi between plant and soil is being a bridge, and it is the carrier of matter transport.
AM真菌在植物和土壤间起着桥梁的作用，是植物和土壤间物质运输的载体。
Spatial variability of soil water retention function is a primary prerequisite for quantitative research on water movement and solution transfer in unsaturated zone.
土壤水分特征函数空间异质性是定量研究土壤非饱和带水分运动以及溶质运移的先决条件。
Power function equation could better describe the adsorption dynamics of soil Mn in different soil types.
不同类型土壤锰吸附动力学以权函数方程拟合度较好。
Because of complicated function of natural and artificial factors, the quality and quantity of black soil decreased and degenerated heavily.
由于自然和人为因素的共同作用，黑土的质量发生了严重的退化，数量也急剧减少。
It is important to research on the distribution rule of the regional soil carbon pool for the study of global change, soil fertility and ecosystem function appraisal.
研究区域土壤碳库的分布特征对于全球变化研究、土壤肥力和生态系统的功能评价具有重要意义。
The community structure and function of soil fauna in ecosystems received severe negative impact with the increasing population, soil degradation and environment pollution.
随着人口的增长、土壤的退化以及环境的恶化，各种生态系统中土壤动物的结构与功能受到严重的干扰。
Manganese element in soil have obvious function to the photosynthesis and metabolism of plant, and can promote growth, strengthen the disease resistance and increase the output.
土壤中锰元素对植物光合作用、新陈代谢、促进生长、增强抗病性及其增加产量均有明显的作用。
Based on the equation of soil water feature curve and the relationship between soil water feature curve and permeability function, the permeability function equation of unsaturated soil is derived.
从非饱和土土水特征曲线方程出发，根据渗透函数和土水特征曲线的关系，推导出了非饱和土渗透函数方程。
Erosivity of rainfall (r) is the potential ability which cause soil erosion and is the function of the physics characteristic of rainfall.
降雨侵蚀力(R)是引起土壤侵蚀的潜在能力，是降雨物理特征的函数。
But the big function of soil and water conservation and the improvement of soil texture and seedling nursing have not been studied systematically.
但对它强大的水土保育功能(抑制水土流失、改善土壤质地)，以及与水土保育相关联的幼苗保育功能等方面研究较少。
And the MARC program's function has been secondarily developed, with subroutines for soil initial stress analysis.
对Marc软件功能进行了二次开发，研编了在钻孔中考虑土体初始应力的子程序。
The soil area from the bearing function to the productivity function is 55.82 hm2 and to the ecological environment function is 0.53 hm2.
从承载力功能的土壤转向生产力功能的面积为55.82公顷，转向生态环境功能的为0.53公顷。
By expanding in the Taylor series, we estimate the effect of the soil parameter variations on the soil transfer function in this paper.
本文采用秦勒级数展开估计土层参数随机性对场地传递函数的影响。
The infiltration supplement coefficient is both two-factor function of grassland coverage and rainfall intensities for Huangmian soil.
黄绵土入渗补给系数可描述为草地盖度和雨强的两因素函数关系。
The second is the adsorption function that soil to phosphorus.
二是土壤对磷的吸附作用。
The SOC content was increased after maize planting, but decreased in the bare soil, indicating that growing maize enhanced the function of soil as a carbon pool.
种植玉米后，土壤有机碳含量增加，说明在供试土壤上，玉米生长促进了土壤碳汇的作用；
The reflected GPS signal as a function of permittivity relates to the soil moisture.
反射gps信号功率是土壤介电常数的函数，而土壤介电常数又和土壤湿度有关。
The concentration of ammonium nitrogen in horizontal migration decreased with the increase in unsaturated soil water diffusivity in power function.
铵态氮水平运移的浓度受非饱和土壤水扩散率的影响，并随非饱和土壤水扩散率的升高而呈幂函数曲线下降。
Thus the key problem is how to meet varied economic objectives besides its fuel application of fuel forest on the basis of holding its soil conservation function.
因此，薪炭林在发挥水土保持功能的基础上，如何达到兼有薪用的多种经济目的是关键。
Thus the key problem is how to meet varied economic objectives besides its fuel application of fuel forest on the basis of holding its soil conservation function.
因此，薪炭林在发挥水土保持功能的基础上，如何达到兼有薪用的多种经济目的是关键。
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