1)ecotone[英]['i:k?t?un][美]['ik?ton]生态交错带
1.The biodiversity and protection strategies in the Daxingànling - Xiaoxingànling mountain ecotone;大小兴安岭生态交错带生物多样性及其保护对策
2.A review of ecotone: concepts, attributes, theories and research advances;生态交错带及其研究进展
英文短句/例句
1.A Study on the Vegetation Ecology of Subalpine Timberline Ecotone;亚高山林线生态交错带的植被生态学研究
2.Study on Urban Ecological Pattern in Mountain and Plain Ecotone山地平原生态交错带城镇生态格局研究
3.An Analysis on Vegetation Pattern of Ecotone at Large-Scale in North China中国北方生态交错带大尺度植被格局研究
4.The Ecology-production Mode of the Interveining Regions of Meadow and Agricultural、Stock Raising Areas of Our Country;我国草地与农牧交错带生态——生产模式
5.Regionalization of Eco-productive Paradigm for Farming-pastoral Zone in North China;中国北方农牧交错带生态—生产范式区划研究
6.AN ECO-CYBERNETIC ANALYSIS OF URBAN-RURAL ECOTONE──TIANJIN CASE STUDY城乡交错带的生态控制论分析──天津实例研究
7.Research on Landscape Pattern and Ecological Frangibility Assessment of Chuan-Dian Farming-Pastoral Zone;川滇农牧交错带景观格局与生态脆弱性评价
8.The Remote Sensing Investigation and Eco-environment Estimate of Forest-steppe in Hulun Buir;森林—草原交错带的生态环境遥感调查和评价
9.Studies on Ecological Characteristics of Larix Chinensis Communities Ecotone;太白红杉群落交错带生态学特性的研究
10.Construction of Ecological Industry and the Developing Strategy in Bashang Plateau;河北坝上农牧交错带生态产业构建及发展对策
11.Evaluation of Ecological Economy Effect and Land Use Change in the Farming-Pasture Zigzag Zone of Hebei Province;河北农牧交错带土地利用变化及生态效应评价
12.Some Problems about Water Resources and Ecological Environment in North Ecotone and Their Cause;北方农牧交错带水资源与生态环境问题初探
13.Analysis on Land Use and Its Ecological Environmental Background in the Farming-Pastoral Ecotones in North China;北方农牧交错带土地利用及其生态背景分析
14.Revelation of Ecological Evaluation of the Farming-pastoral Transitional Zone to Land Arrangement-A Case Study on Zhenlai County;农牧交错地带的生态评估对土地整理的启示
15.A Study on the Eco\|Tourism Development of the Urban\|Rural Interlocking Belt in Shanghai City;上海城乡交错带生态旅游开发战略研究
16.The Impact of Land Use Change on Ecological Environment in Rural-urban Fringe城乡交错带土地利用变化的生态环境影响研究
17.Ecological Study of Agriculture-Pasture Transition Zone on Zhangjiakou Bashang Plateau in Hebei Province河北省张家口市坝上农牧交错带区域生态研究
18.Problems of Landscape Ecology in the Urban-Rural Intersectional Areas of Urumqi City and Some Positive Measures乌鲁木齐城乡交错带景观生态问题及优化对策
相关短句/例句
Marine ecotone海洋生态交错带
3)land-lake ecozone水陆生态交错带
1.Taking East Dongting Lake region as an example,this paper analyzes the complexity of land-lake ecozone from the aspects of structure,function and condition character.水陆生态交错带是指内陆水生生态系统与陆地生态系统之间的功能界面区,其复杂性是地理学和地植物学关注的重要问题。
4)Forest swamp ecotone森林-沼泽生态交错带
5)succession of communities森林沼泽生态交错带
1.In this paper, the authors probe the laws of succession of communities on forests\|swamps ecotones in Changbai Mountains.该文目的在于揭示长白山森林沼泽生态交错带群落的演替规律 ,以便为科学地保护和经营管理森林与湿地过渡带生物资源提供依据 。
6)Mountain and Plain Ecotone山地平原生态交错带
1.Study on Urban Ecological Pattern in Mountain and Plain Ecotone山地平原生态交错带城镇生态格局研究
延伸阅读
交错环和交错代数交错环和交错代数alternative rings and algebras 交错环和交错代数1 aitettla幼犯d雌s叨d川邵b”.;助‘T印.叮娜助砚”山田叨皿叨,曦讨J 孪拳所(al temative ring)是指每两个元素都生成一个结合子环的环;孪考华熬(al ter”ativeai二玩a)是(线性)代数并且是交错环.根据E.Artin的一个定理,所有交错环的类由如下一组等式定义: (习)y”x切)(右交错性); (xx)y二x(却)(左交错性).于是,交错环形成一个簇.在这种环里,结合子(ass呱ator)(结合性的亏量) (x,少,:)=(xy卜一x恤)是其自变元的一个斜对称〔交错)函数,这个事实表明使用术语“交错环”是合理的. 交错环的第一个例子是Ca尹ey数(Caylcy num-悦巧),它作成一个交错除环(幻忱n犯ti说s处阴一几城)或交错体,即有单位元的交错环且对于任意b和a笋0,方程ax=b和ya=b有唯一的解.交错除环在射影平面的理论中起着实质性的作用,这是因为一个射影平面是一个Motlfa飞平面(Mdufangp场能)(即关于某一直线的平移平面),当且仅当其三元环的任何坐标化是交错除环.在一个有单位元的环R中,如果每个非零元素均可逆且对任意a,b〔R均有等式a一’(ab)二乙(或者,(b a)a一’=b),则R是交错除环.任何交错除环或者是结合的,或者是其中心上的Ca洲ey一Di改50.代数(Qyley-众汰阳n爽灼ra). 每个单交错环也或者是结合环,或者是其中心上的Cayley一Di由on代数(在这种情形下,此代数未必是体).结合环和本原交错环都被Cayley·Di山on代数所穷尽.所有素交错环R(如果3R护0)或是结合环,或是Cayley一Dickson环. 在相似的条件下,交错环的许多性质本质上不同于结合环.例如,如果R是交错环,A和B是其右理想,则其积月丑未必是右理想,即使A是双边理想也如此.但是,两个双边理想的积仍是双边理想.交错环与结合环的差异也强烈地体现在这样的事实之中:由于括号放的位置不同,元素的积或是零或非零,从而交错环有各种幂零性.通常在交错环中使用如下几种幕零性:可解性(s olvabilit刃(环R称为具有指数m的可解子(s ulvable ringl如果存在自然数。
