论行政区与城市的关系

撤县建设市带来了两个相互关联的大问题：（１）既打乱了行政区与城市的关系;（２）也没有理顺行政区的公共行政和经济业务行政管理权授权的机制,反而带来了许多问题。文章对县城为市这种行政区设置方式的弊端及以县为代表的行政区授权方式作了讨论,并提出了改进办法。     

HABITAT ISLANDS AND THE PRESERVATION OF NEW ZEALAND'S AVIFAUNA*

ABSTRACT. Numerous avifauna species face extinction on New Zealand's two main islands, owing largely to forest clearance and to introduced mammals. In response, New Zealand selects certain offshore islands for the relocation of threatened native birds, first purging them of mammalian predators. Over the past few decades, this procedure has evolved to become fairly successful. Protected habitat “islands” within mainland forested areas are also being created, but with success less certain. As historic habitats are lost, small biopreservation islands may become a standard mechanism for protecting threatened species, a process that can be termed the “miniaturization” of nature.     

京津唐地区地壳结构与强震的发生──Ⅱ．S波速度结构

利用１９８６－１９９３年发生在京津唐地区的２５１６个地震的２１９２７个Ｓ波到时进行层析成像，得出：（１）公元１０００年以来研究区强震震中在下地壳的投影大多分布在低速块体内或低速块体与高速块体相交地带偏低速块体的一侧；（２）唐山地震震源下方的物质，波速比Ｖｐ／Ｖｓ呈现高值，推测呈部分熔融状态，有热物质流从莫霍界面的下方沿通向震源下方的断裂入侵的迹象。（３）黄骅坳陷中心区的上地壳呈现低Ｖｐ／Ｖｓ值，推测那里为水－汽转变的地热系，这与在该地区所测量的高热流值一致。冀中坳陷区的高Ｖｐ／Ｖｓ值反映出其地下物质可能呈部分熔融状态。     

沅水流域找原生金刚石工业矿床的意见

沅水流域分布４个金刚石砂矿床，供给金刚石砂矿的含金刚石岩体具多期多源特点。该流域前白垩系暴露区的含金刚石岩体在第三纪末和第四纪初遭受强烈剥蚀保存较好的含金刚石岩体可能隐伏在沅麻、常桃盆地红层及洞庭湖区第四系之下，这些地区应成为原生金刚石找矿远景区，因此要采用新的找矿手段和方法。     

新疆阿拉套山花岗岩类高εNd值的成因探讨

新疆阿拉套山广泛出露的华力西期花岗岩类的一般岩石学和地球化学性质可与我国以及世界上大部分地区出露的花岗岩相类比,但其ε_Nd(t)高,为+2.2-+3.2,其中一部分花岗岩的⁸⁷Sr/⁸⁶Sr(t)也高,可达0.715.这可能是壳幔物质AFC式混合的结果,也可能是准噶尔地块及其两缘特殊地质环境的反映。     

祁连山北坡森林资源与林业建设

祁连山北坡森林资源具有团块层次分布显著、地域分布不均和林区生态系统脆弱等特点，并具有保持水土、调节气候、涵养水源等特殊功能，是河西天然巨型的“绿色水库”。为此，对林区提出了综合规划、分区治理和划分为３个林业气候区开发的意见。     

贡嘎山东坡植被原生演替的种间协变

泥石流迹地形成植被原生演替系列．通过对演替不同阶段群落优势种群多度的调查，主要采用Ｓｐｅａｒｍａｎ系数来测度种对的多度数据协变的相对强度．结果表明，ｒ对策和Ｋ对策的种对有负协交关系；先锋树种的种对有正协变关系．     

秦岭─黄淮平原交界带气候边际效应初探*

本文基于地理学和生态学中边际效应的观点,论述山地与平原两大系统在一定条件下相互作用,形成一些既不同于山地又异于平原的特殊气候现象──气候边际效应。分析指出,气候边际效应在秦岭-黄淮平原交界带中主要表现为坡地暖带、强降水效应和干旱效应,并对这三种气候边际效应的特征及成因进行了探讨。     

祁连山青海云杉林辐射平衡研究

研究了青海云杉林的辐射平衡，表明青海云杉林冠辐射平衡各分量在总辐射中所占的比例为；反射辐射１２．０７％，净长波辐射２９．４６％，净全辐射５８．４７％，辐射平衡各分量与总辐射线性回归，相关紧密；青海云杉林林内总辐射林外减少７１．０２％，林内净辐射变幅小于林冠层。     

Preliminary Study on Paleoearthquake Chronology on the Northern Liulengshan Piedmont Fault in Yangyuan, Hebei Province, China

The northern Liulengshan piedmont fault is located along the southern margin of the Yangyuan basin and represents a dip-slip normal fault,generally NEE-trending and NNW-dipping.Landforms offset by the fault are fairly developed and well preserved in the Dushanpu area of Yangyuan County,Hebei Province.Two trenches were excavated in front of a scarp of the northern Liulengshan piedmont fault at Dushanpu and two paleoseismic events were revealed in the trenches,from which several samples were collected for dating.The samples were dated using the IRSL dating technique.The preliminary result shows the possible ages of the two paleoseismic events.