查询词典 Karst

Then, we acquire the style and cause of formation of deep relaxed-tension rock mass base of that: early relaxtion along fault and weak interlayer; nearby relaxed-tension of surrounding rock because of karst; distortion and destroy of top rock mass form deep relaxed-tension because of karst collapse.

在此基础上得出深部卸荷拉裂岩体的类型和成因：沿断层、软弱夹层发生的早期松弛；由于岩溶引起邻近围岩发生松弛拉裂；岩溶坍塌引起上部岩体变形破坏而形成的深层松弛拉裂。

In this paper the indoor simulation test is adopted to study the variation characteristics of soil pH, the rate of corn straw degradation and enzyme activity on brown rendzina in karst area and laterite in non-karst area in the degradation process of corn straw.

通过室内模拟试验，研究了岩溶区棕色石灰土与非岩溶区红壤对玉米秸秆有机物料降解过程中土壤pH值、秸秆降解率和酶活性的变化特征。

Compared with other karst topography, the Stone Forest Karst Shifeng more colorful, shape and color and more full of changes.

同其他喀斯特地形相比，石林喀斯特的石峰更加丰富多彩，形状和颜色也更富于变化。

This dissertation was focused on the research about the formation and evolution of NQB from the Late Triassic to the early middle Epoch of Jurassic Period, including integrated analyzing the characteristic of the key stratigraphic surfaces, the time of the key stratigraphy, regional rock straigraphy, biostratigraphy and chronostratigraphy, sedimentary system and depositional facies. On basis of these analysis, a tectonic evolution model have been established for NQB during from the Late Triassic to the early middle Epoch of Jurassic Period.1. After the systematic surface analysis about main stratigraphy units, we found that:(1) the bottom of Xiaochaka formation was comformity with the middle Triassic in the basin, and in the north margin it was deposited and overlapped on the different period stratigraphy before Triassic.(2) The top surface of Xiaochaka formation developed regionally karst and paleo-karst breccia, and was uncomformity with Nadigangri Formation, these things suggest that NQB in Xiaochaka depositing stage was developed from middle Triassic basin, and then an extensive regression occurred, the deposition was over and erosion come into being.(3) The lithologic assemblage, geochemistry, mixed fossils, and stratigraphy overlapping characteristic of Quemocuo Formation in early middle Jurassic indicted that the uncomformity surface was an extension-unconformity.2. Integrated analysis about stratigraphy division and correlation indicted that:(1) the paleontologic assemblage of Xiaochaka formation show its time was Carian -Norian stage of late Triassic. According to it was overlapped by late Triassic Nadigangri Formation, so Xiaochaka formation should be Carian - early Norian stage.(2) the SHRIMP Zircon U-Pb age of Nadigangri formation volcanic rocks wear vary form 216 to 205 Ma, so its time should be Norian, but maybe extended into Rhaetian Stage.(3) The age of its bottom volcanic rocks, the fossil assemblages of its middle and upper members and overlapped by lower Jurassic, indicted the age of Riganpeicuo Formation was Norian - Rhaetian stage. And the same time, the volcanic rocks geochemistry of Nadigangri and Riganpeicuo formation both reflected that they wear formed in rift tectonic settings. The lower lithologic and surface characteristic, fossil assemblages and its upper maybe was conformity with lower Jurassic, all reflected that the age of Tumengela Formation in Tumen area should be Norian - Rhaetian stage.

论文对晚三叠世—中侏罗世早期盆地的形成与演化开展了研究，包括关键地层界面特征分析、关键地层时代归属分析、区域岩石地层、生物地层和年代地层的综合对比分析、区域沉积体系与沉积相分析、岩相古地理分析，最终建立晚三叠世—中侏罗世早期羌塘盆沉积—构造动力演化模式。1、系统的对各地层单元的界面分析发现：(1)肖茶卡组底界在盆地内部与中三叠统整合关系，在盆地北缘为沉积超覆于不同时代的前三叠系之上：(2)肖茶卡组顶界面发育古岩溶角砾岩，与上覆那底岗日组为岩溶不整合接触，说明肖茶卡组沉积时期的羌塘盆地是在早中三叠世的盆地基础发展起来的，后期出现了广泛的海退事件，使盆地结束沉积并遭受风化剥蚀作用；(3)中侏罗统雀莫错组的岩性组合特征、岩石化学特征、古生物化石混积和地层的沉积超覆现象均表现出裂陷环境下形成的伸展不整合面的特征。2、综合地层划分与对比分析认为：(1)肖茶卡组古生物化石组合反映其时代为晚三叠世卡尼期—若利期，根据其上被上三叠统那底岗日组不整合覆盖，将其时代厘定为卡尼期—若利期早期；(2)那底岗日组火山岩SHRIMP锆石U-Pb年龄在216～205 Ma之间，其时代主要为若利期，可能包含有瑞替期：(3)日干配错组底部火山岩的年龄、中上部化石组合及其被下侏罗统整合覆盖，综合反映的时代为晚三叠世若利期—瑞替期，而且那底岗日组火山岩和日干配错组火山岩的地球化学成分分析反映两者均为引张构造背景下的产物；土门地区的土门各拉组的下部岩性及界面特征、化石组合和上部可能被下侏罗统整合覆盖，综合反映其时代为若利期—若利期。

The achievement of this project can be briefly summed up as following:(1)the carbon contributing to karst processes mainly comes from ecological system itself under the condition of existence of vegetation and soil covers;(2)results indicates that the depositing processes of rainfall to CO2 is an important "sink" to global carbon cycle;(3)owing to the differences of vegetation and surface covering, the adjusting effect of ecosystem to environmental humidity, temperature and CO2 concentration near surface air which indicates different benefit of preventing water and soil from lose is marked;(4)the preponderant species of vegetation in the karst ecosystems which have different kinds of carbonate rocks are obviously variant, and this situation results to the clearly differences of the micro － habitat , structure of surface cover and water holding capacity;(5) the relevant study showed that the carpophagous animals and birds make a important role in the spreading of vegetation seeds. The designed experience for the study of seed reservoir was not able to obtain a satisfactory result.

主要研究成果包括：通过对表层系统碳库的研究，认为在有土壤和植被覆盖时，岩溶作用过程中的碳主要来自生态系统本身而不是母岩；降雨对大气碳具有重要&沉淀&作用，是碳的一个重要汇；不同植被类型表层岩溶系统对系统水份、空气湿度、气温、土温和近地表 CO2浓度等具有明显调节作用，具有不同的水土保持效益；不同母岩的岩溶生态系统的植被优势种、属差异明显，由此形成的小生境、地被物及其持水性差异巨大；对典型岩溶表层系统种子库的试验研究没有取得满意结果，但食果动物、鸟类对种子传播起到一定作用。

Take three kinds of tree in Karst area and non-Karst area (Castanea mollissima, Ginkgo biloba, Prunuspersica) for study objects.

本文以桂林毛村两个区域上的三种经济树种：板栗、银杏、桃树及其根附近的土壤为研究对象，研究土壤溶解有机碳的季节动态及其对三种果树的相互影响。

A sea of stones and a stretch of caves in Xingwen is a rare karst park with world -class karst cave and doline. Its distinctive landscape distribution forms a very magnificent and very wonderful natural landscape.

兴文石海洞乡是不可多得的喀斯特公园，其洞穴与漏斗都是世界级的，独具一格的景观配置，构成了一幅世界上极为壮观、极为独特的自然奇观。

The four development stages of the implication of karst can be divided into:(1) before the 18th century karst is a geograhpical name representing the presenting stony, waterless and forestless landscapes like a desert,...

喀斯特含义的发展可分为四个阶段，即 18世纪以前作为地方名称和地理术语、19至 2 0世纪初的代表一类地貌形态与发育过程、2 0世纪上半叶至 70年代的人地关系的认识和 2 0世纪 6 0年代以来将岩溶列为脆弱环境。

In generall surface water, Quaternary ground water and karst water are not hydraulically linked with each. Other in Laiwu iron ore field. However karst sinking at surface tokes place in places where neotectonic faults are developed.

莱芜铁矿田中，一般情况下地表水、第四系潜水与岩溶水无水力联系，地表无塌陷产生，只有在新构造断裂发育的地段，才有可能产生岩溶地面塌陷。

Karst soil rocky desertification is not only a geo-ecological disaster induced by Karst geomorphy, but also a critical factor restraining social and economic development of Southwest China.

喀斯特土壤石漠化是我国西南喀斯特地区诱发重要地质灾害的生态环境问题，是制约区域社会经济发展的关键因素。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。