1) index of soil anti-scourability
土壤抗冲性指数
1.
The main conclusions are as following:in low mountain areas,the index of soil anti-scourability is in evidently direct proportion to the existent masses of litter layer.
在青海大通县北川河流域分浅山区和脑山区各选择了5种退耕还林配置模式,研究了不同配置模式对土壤抗冲性的影响,结果表明:在浅山区,土壤抗冲性指数与枯落物现存量呈显著正相关,以模式D(中国沙棘)的抗冲性指数最大,为1。
2) soil anti-scourability
土壤抗冲性
1.
Experimental research on sheet flow erosion of loessial slope and evaluation on soil anti-scourability;
坡面薄层水流侵蚀试验研究及土壤抗冲性评价
2.
In order to probe into distribution features of soil anti-scourability in the upper-middle reaches of Yangtze river,the field tests on soil anti-scourability at 50 test-plots of 9 provinces were conducted by the undisturbed-soil trough scouring method.
为弄清长江中上游地区土壤抗冲性宏观分布特征,采用原状土冲刷水槽法,对长江中上游地区9省50个测试点的土壤抗冲性进行了野外测试。
3.
dintanensis,studied on the relationships be- tween rootsystem features and soil anti-scourability,soil anti-erosibility,soil anti-tensile strength or soil compactibility.
植物的固土抗蚀作用大小与其根系密切相关,而根系特征决定了根的固土抗蚀作用的发挥,本文以相同基质下构树和顶坛花椒不同特征的根系为研究对象,通过研究根系特征与土壤抗冲性、抗蚀性、抗拉性、紧实度的关系,结果表明,苗期根系能强化土壤抗冲性,构树苗、顶坛花椒苗根系强化值大小分别为78。
3) soil anti scourability
土壤抗冲性
1.
Based on the mean index of soil anti scourability w=1n∑ni=1 wi the effects of the different tillage and utilization on w, the relationship among runoff intensity or runoff duration of individual rainfall .
运用土壤抗冲性指标的均值Ｋｗ＝１ｎ∑ｎｉ＝１Ｋｗｉ的计算方法，研究不同农耕措施与利用对Ｋｗ的影响。
2.
The factors effecting the soil anti scourability and its feature under different corps and growing periods were discussed.
通过对黄土丘陵沟壑区种植不同作物的坡耕地土壤抗冲性进行动态测定 ,探讨了坡耕地在作物不同生长时期和种植不同作物条件下的抗冲性特征及影响因素 ,为该区保持坡耕地水土、防止流失而合理配置农作物提供科学依据。
4) Soil anti-scouribility
土壤抗冲性
1.
High soil erosion rate by water mainly relates to low soil anti-scouribility in the Loess Plateau.
在水土流失极为严重的黄土高原地区,土壤抗冲性决定着土壤的可蚀性。
2.
In this paper,12 dominant diffuse-rooted species from riparian zones along the Jialing River were selected and their enhancement effects on soil anti-scouribility were determined.
对三峡库区嘉陵江江岸植被的12种优势须根系草本植物进行了研究,考察了各种植物根系对土壤抗冲性的增强作用,并利用WinRHIZO根系分析系统对各种植物根系的形态学指标进行了分析。
3.
This paper aimed at the two main reasons of soil and water loss that Three Gorges Reservoir Region suffered from, stream scouring and immersing erosion, studied the soil-binding capacity of riparian plants from both soil anti-scouribility and anti-erodibility aspects.
本文针对三峡库岸长期受到水流冲刷以及蓄水期遭受长时间浸泡这两个引起水土流失的主要原因,分别从土壤抗冲性和抗蚀性两个方面研究了岸生植物根系的固土效能。
5) coefficient of anti-erosion
土壤抗冲系数
6) soil index
土壤指数
补充资料：迁移效率指数、偏好指数和差别指数
迁移效率指数、偏好指数和差别指数
迁移效率指数、偏好指数和差别指数迁移效率指数是用于测定两地间人口迁移效率的指标。它是净迁移对总迁移之比。计算公式为:EIM一摇寿纂拼又‘。。上式中，}人么夕一材方}为i、]两地净迁移人数;从少+材户为i、]两地总迁移人数;El入了为迁移效率指数。 EIM的取值范围为。至100，如某一地区的值越大，反映迁移的的影响也越大。如果计算i地区与其他一切地区之间的人口迁移效率指数EIM厂，则: }艺材。一芝Mj、}EIM汀艺。+乏M，(j笋i) 迁移偏好指数是从一个地区向另一地区的实际迁移人数与期望迁移人数之比。计算公式为:____M.___材尸2行一:一二子一一不石一二，么M“ 了厂‘.厂‘、八 }二不十二六二1 、厂厂7上式中，M“为从i地迁到j地的实际迁移量;艺材。为总的人口迁移量;尸为总人口;M尸I，j为迁移偏好指数。通过计算迁移偏好指数，可以反映各地区的相对引力。 迁移差别指数是反映具有某种特征的迁移人口与非迁移人口区别的指数。例如，专业技术人员的人数所占比重，各种文化程度人数所占比重等，以便研究人才流失和其他间题。计算公式为:M‘从IMD、一翌不丝xl。。 .义V‘ N上式中，M为迁移人数;M，为具有i特征的迁移人数;N为非迁移人数;N‘为具有i特征的非迁移人数;了八了D、为迁移差别指数。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条