ECOLOGICAL SERIES OF SOIL ANIMALS IN DARLIDAI MOUNTAIN   总被引：1，自引：0，他引：1  

HOUWei-ling FANHong 《中国地理科学(英文版)》2002,12(4):378-382

The ecological series of soil animals under the broad-leaved and pine mixed forest in Darlidai Mountainwas studied. Seven sample plots were selected according to different altitude gradients, which belong to different vegeta-tion types. By investigating and analyzing soil animals in every sample plot it is found that there are 45 groups and 1956individuals, which axe involved in 3 phylums, 7 classes, 16 orders, respectively. The altitude is a key factor which af-fects ecological series of soil animals. Both the groups and individuals of soil animals increase with altitude increasingunder certain conditions, which contrastes with ordinary cases, resulting from special micro-climate in studied area. Thegroups and individuls of soil animals are the most under the broad-leaved and pine forest on the top of the mountain, andthe least under Picea-Abies forest in the foot of the mountain.  相似文献   

印度落叶植物生长周期中的休眠期对生物地球化学勘查铀矿的意义     

Pand.  SK 韩耀昭 《国外铀金地质》1994,11(3):249-254

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辽西八家子多金属矿床的成因研究   总被引：3，自引：0，他引：3  

杨占兴 《辽宁地质》1994,(3):193-225

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宜昌地区柯绿泥石特征及成因探讨     

王彤 《地质实验室》1994,10(3):167-172

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探索大洋锰结核矿的成因     

张晓萌 《海洋世界》1996,(8):9-9

海底锰结核是由英国人首先发现的。1873年2月18日,英国“挑战者”号考察船来到加那利群岛西南约300千米的海面进行海底取样调查。结果从海底捞上来几块像黑煤球的硬块。船上的几位科学家谁都没有见过这种“黑色的卵石块”。后来,这些“黑卵石块”送回英国。经过化验分析,才知道它不是化石,而是含有大量  相似文献   

我国南方一些金银矿床和锡—银多金属矿床中的银黝铜矿及其标型意义     

帅德权 《南方国土资源》1990,(4)

本文主要通过我国南方一些金银矿床和锡—银多金属矿床中的银黝铜矿的化学成分标型特征分析对比,结合其光性、物理性质及与其它矿物连生组合特征,探讨了不同矿床(矿田)银黝铜矿的成因标型意义。并指出银黝铜矿可作为广西找银矿的标型矿物是具有现实意义。  相似文献   

Heat-shock protein 70 expression in shrimp Fenneropenaeus chinensis during thermal and immune-challenged stress   总被引：4，自引：0，他引：4  

郭振宇焦传珍  相建海 《中国海洋湖沼学报》2004,22(4):386-391

Using western immunoblotting, we obtained heat-shock protein 70 (HSP70) induction data and distribution in different tissues from shrimp Fenneropenaeus chinensis during thermal and immune-challenged stresses. This is probably the first report of the effects of various stressors on the expression of HSP70 in shrimp.HSP70 was prominently induced in hepatopancreas and gills, but not in muscle, eyestalk and hemolymph, when the shrimp were exposed to heat shock and Vibrio anguillavium-challenged stresses. Cold shock and WSSV treatment had no significant effects on the levels of HSP70 expression in all tissues examined. HSP70 induction was greatest after 2 h exposure to heat shock stress, which was elevated after acute heat shock exposure of 10℃ above ambient temperature.  相似文献   

都庞岭花岗岩的基本特征及成因分析     

干国樑  陈志雄  余凤鸣  何龙清  张相训  卢光豪 《南方国土资源》1990,(2)

都庞岭复式岩体由加里东期、印支期和燕山早期花岗岩组成。通过工作我们认为燕山早期花岩可分为第一次和第一次,其中第一次花岗岩与Sn矿成矿关系最为密切。从早到晚,花岗岩由二花岗岩→钾长花岗岩→二长花岗岩→钠长花岗岩,云母由镁黑云母→铁黑云母→黑磷云母;岩浆体向酸度增高的方向演化,伴随着碱度的增高,由富钾渐变为富钠;微量元素上,岩浆逐渐贫SrBa、Cl、Sc,富Li、Rb、W、Sn、Mo、Bi、Nb、Ta、F、B;从早到晚,花岗岩LRB含量和LREE/HREE、δEu值不断降低,HREE含量不断增高。本区花岗岩为地壳重熔岩浆断分异演化的产物,形成于相对还原环境。  相似文献   

Mineral Resources of Chinese Altay and Tianshan： Metallogeny and Related Tectonic Processesm—A field workshop of IGCP-473     

MaoJingwen ReimarSeltmann RichardJ.Goldfarb 《《幕》》2004,27(1):44-47

A workshop of the IGCP-473 was held in Xinjiang, northwestern China, from August 9-21. It was attended by more than 70 scientists, including 29 from outside of China, i.eUnited States, Canada, Australia, Japan,Russia, United Kingdom, South Africa,Mongolia, Kyrgyzstan, and Khazakstan. The workshop was superbly organized by a team led by Prof. Mao Jingwen of Institute of  相似文献   

Final report of IGCP Project 410 （1997-2002）——The Great Ordovician Biodiversification Event Department of Earth and Planetary Sciences, Macquarie University, North Ryde, NSW 2109, Australia. E-mail： bwebby@laurel.ocs.mq.edu.au     

BarryDWebby MaryL.Droser FlorentinParis 《《幕》》2004,27(3):203-208

In 1997, IGCP Project No. 410 was established to appraise known records of Ordovician biotas, in order to evaluate one of the greatest-ever diversifications of life on Earth, between 489 and 443 million years ago. Data collection and analysis of biodiversity were coordinated through seven regional teams, and a global“clade” team.  相似文献