黄土的

In this paper, collapse characteristics of intact loess from three typical loess areas under different moisture condition are studied,and the principles of loess collapsibility influenced by water content,dry density as well as pressure and behaviors of these in different loess are approached respectively.

对 3个典型黄土地区的原状黄土样在不同湿度状态下的湿陷特性进行了研究，探讨了含水率、干密度、压力对黄土湿陷性的影响规律，着重从结构性的角度解释了不同地区间黄土湿陷特性的差异。

The Necessity of water saving agriculture in the loess plateau of China is analysized,and main types of regulating soil water techniques are sumed up as follows:accumulating fertileness,crop rotation,intermittent fallowness of soil,drought resistant crop breeding, water saving ,run off agriculture and chemical methods.

分析黄土高原节水农业的必要性，总结出黄土高原农业调水技术主要有 7大类：培肥地力以肥调水，轮作倒茬调水，间隙休闲调水，抗旱育种调水，节水灌溉调水，径流农业调水，化学技术调水；指出在干旱、半干旱的黄土高原地区，利用农业调水技术是粮食增产增收的有效措施和必然趋

Under the direct foundering condition, the total deformation of compacted loess of same dry density is related with original water content and pressure, and is no long the single function of pressure.

饱和压实黄土的总变形是压力的单值函数，其总变形系数与压力的函数关系，结合改进的分层总合法可用于路基最大沉降量的计算。

During the Last Interglaciation it was the forest, mainly composed of broadleaves, or forest-grassland at the east and middle part of the Chinese Loess Plateau, and was the forest-grassland at the west part of the Chinese Loess Plateau. It changed to the forest or forest-grassland at the most part of the Chinese Loess Plateau in the Holocene, some kinds of hardwood broadleaves dispersing at the warm temperate and the tropic zones appeared. Now the vegetation at the Chinese Loess Plateau inherits from that during the Holocene, the vegetation have been heavily destroyed owing to the human being actions. The vegetation protection at the Chinese Loess Plateau is a significant problem.

末次间冰期期间气候温暖湿润，黄土高原的中、东部地区主要发育了以落叶阔叶林为主的森林或森林草原植被，黄土高原西部地区主要发育的是以针叶林为主森林草原植被；全新世期间黄土高原的植被状况发生较大变化，黄土高原的大部分地区为森林植被或森林草原植被，植被中还有暖温带落叶阔叶林，并含有少量亚热带种属；现代黄土高原的植被主要还是继承了全新世以来的植被状况，但是由于人类活动的加剧，对黄土高原的植被产生了毁灭性的破坏，因此，如何保护黄土高原的自然植被是我们面临的一个严峻的现实问题。

Within sampling depth,accumulation rate ranges from 0.02mm/a to 2.58mm/a for these sections,and a significant erosional/depositionalhiatus is identified for two natural sections.

在取样的深度范围内，所测剖面的堆积速率从0.02mm/a到2.58mm/a，并显示一般风成黄土的堆积速率要比水成堆积物的堆积速率要慢。

In addition, the two lithological strata containing fossils are differences in typical Baode the so-called "red Hipparion" climate temperature and humidity is a product of the period, and in the Linxia basin is close to a very sallow loess earthy heap, it may be reflected in a more dry and cold climatic conditions.

此外，两地含化石地层的岩性也有差异，在保德地区典型的所谓&三趾马红土&，是气候比较温湿时期的产物，而在临夏盆地则是一种很接近黄土的灰黄色土状堆积，它所反映的气候条件可能更为干冷。

Hilly gullied loess region, the main body of Loess Plateau, is also an eco-economic sensitive area with special landscape pattern. Being an ecological fragile and economically underdeveloped region, environment protection and economic development remain to be double tasks it expects to solve simultaneously.

中文题名黄土高原丘陵沟壑区小流域优化生态－生产范式副题名外文题名 Optimized eco-productive paradigm for small watersheds in hilly gullied Loess Plateau 论文作者孔正红导师张新时院士学科专业生态学研究领域\研究方向学位级别博士学位授予单位中国科学院植物研究所学位授予日期2002 论文页码总数143页关键词农业生态系统优化生态－生产范式小流域黄土丘陵沟壑区馆藏号BSLW /2003 /Q948 /26 黄土丘陵沟壑区是黄土高原的主体部分，也是具有特殊景观格局的生态-经济敏感区。

The trees are bald and yellow, grass are painted with the color of the earth.

正午的阳光让天空格外湛蓝，湖边的树光秃秃的，大片的水草也被冠以大地黄土的颜色。

More and more study on cap-pile groups-soil interaction of bridge pile in loess area has been paid attention to.

黄土的工程特性和地层分布具有其自身的特点，黄土区桥梁桩基桩—土—承台共同工作的研究越来越受到工程界和学术界的关注。

The book summary of the engineering properties of loess wall, a wall of loess detailed classification to meet the 350km / h high-speed railway tunnel and the structure of the reasonableness of the requested size of the tunnel section, and in the form of parameters, load characteristics of the loess tunnel wall, Anchor role in the stability of the characteristics of the tunnel and control the key technology design.

本书归纳总结了黄土围岩工程特性，提出了黄土围岩的细化分级，满足350km/h高速铁路和隧道结构合理性要求的隧道断面大小、形式和参数，黄土隧道围岩荷载特征、锚杆作用特点和隧道稳定性控制方法等关键设计技术。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。