种植黄连和重楼对小型土壤节肢动物群落的影响

为了掌握中药材种植对土壤动物群落的影响,于2020年7月对成都市彭州境内种植期为3年和5年的黄连和重楼样地的小型土壤节肢动物进行了调查.共分离到小型土壤节肢动物526只,隶属于4纲17目69科98类或属,优势类群为等节跳属、平懒甲螨属、符跳属和副跳属.小型土壤节肢动物群落组成结构在不同中药材样地间差异明显,影响群落组成...     

茅口期相对海平面变化对类动物群的影响——以贵州盘县火铺镇茅口组剖面为例

分析贵州盘县火铺镇茅口期海平面变化的过程和Ｔｉｎｇ类动物群的变化规律,研究相对海平面变化对Ｔｉｎｇ类动物群构及演替的影响。相对海平面的升降变化可引起水深及相关生态条件的改变,并对Ｔｉｎｇ类动物群产生影响,相对海平面变化的幅度和速率是造成Ｔｉｎｇ类动物群面貌变化的重要因素,三级相对海平面上升末期和下降未期,海平面的大幅度抬升或下降是造成Ｔｉｎｇ类物种丰度下降,新种增加量减少的重要原因,海平面的持续缓     

云南毛翅目昆虫区系研究

云南已知毛翅目昆虫２４科７７属３２１种,含云南特有种１５２种。其中东洋界分布成分占８３％,东洋－古北界东部共布成分占９％,东洋－古北界西部共布、东洋－非洲界共布和广布成分所占比例均小于４％。云南毛翅目在我国的分布以西南型（４４％）、华南型（２１％）和西南－华南共布型（９％）为主,其次为向东扩散的西南－华南－华中（５％）和华南－华中（４％）共布型。云南与毗邻省四川的毛翅目区系关系最密切,其次是西藏和     

四川马边大风顶自然保护区两栖爬行动物调查

2005年7月中旬至下旬对四川马边大风顶自然保护区的两栖爬行动物进行了调查.本次调查共采得两栖爬行动物标本17种,隶属于9科3目.结合文献资料,该保护区现已知有两栖爬行动物27种（亚种）,隶属于12科4目.其中,两栖动物13种（亚种）,隶属于7科2目;爬行动物14种（亚种）,隶属于5科2目.该保护区物种组成较丰富,没有古北界的成分,特有种所占比例较高.马边县新纪录9种,大鲵已被收入“濒危野生动植物种国际贸易公约（CITES）”附录Ⅰ,大凉疣螈和脆蛇蜥已被收入《中国濒危动物红皮书》,大鲵和大凉疣螈是国家Ⅱ级重点保护野生动物.该保护区和四川美姑大风顶自然保护区的两栖爬行动物Sorenson指数为36.7%.     

Small-scale biogeographical patterns in some groundwater Crustacea, the syncarid, Parabathynellidae

An analysis was made of the micro-distribution patterns of five phylogenetically closely related species belonging to the genus Iberobathynella, a group of subterranean aquatic crustaceans (Syncarida, Parabathynellidae). The two-step model of colonization and speciation seems to provide a valid explanation for the current distribution of a large number of stygobiontic taxa of marine origin (thalassoid). However, with respect to the Iberobathynella, only the colonization of the subterranean environment at the mesoscale level can be explained. The second phase of the model, marine regression, can only explain the colonization of the region by the ancestor; the subsequent evolution and speciation at a smaller scale remain to be explained. Local geological constraints – Upper Triassic gypsiferous mudstone deposits plus faults and thrusting linked to the Alpine Orogeny – are responsible for the appearance of local palaeogeographic phenomena. These may have been the vicariant processes responsible for the geographical and genetic isolation of the ancestral populations of this group, which eventually led to clade divergence. Together with small-scale passive dispersion (11 dispersal events) and local extinction, these processes could be responsible for the current distribution of the five sister taxa inhabiting the caves of the Sierra de la Collada, Spain. A plausible palaeogeographical scenario is offered to explain their present distribution, that clearly came about through chance events.     

四川雪宝顶自然保护区的兽类

2002年8月和9月,对四川雪宝顶自然保护区的兽类进行了调查,并结合历史文献,确认保护区有兽类90种,分属7目27科。区系分析表明：该保护区的兽类属东洋界的有66种,占73．3％;属古北界的有21种,占23．3％;广布种有3种,占3．4％。该保护区有国家Ⅰ级重点保护兽类7种,国家Ⅱ级保护兽类17种。     

青藏高原东南横断山脉甘孜地区哺乳动物调查及区系研究报告

将近40年收集的哺乳类资料、采集的标本,结合参考文献,按2003年出版的《中国哺乳动物种和亚种分类名录与分布大全》分类系统进行修订、整理、归类,确定甘孜地区的哺乳类野生动物共有8目26科76属125种（含108亚种）,并将这些哺乳类的保护级别、区系成分、栖息环境予以报道。     

Sea and colonial-nesting birds of islands in the southern part of Amurskii Liman

The quantity of the nesting couples of sea birds on the islands of the southern part of Amurskii Liman was determined: common heron Ardea cinerea, slaty-backed gull Larus schistisagus, black-tailed gull L. crassirostris, and sooty guillemot Cepphus carbo.     

A thalloid organism with possible lichen affinity from the Jurassic of northeastern China

Documentation of fossil lichens is rare, despite the fact that lichenization in fungi is believed to be ancient and many paleoecosystems should have provided ample suitable habitats for these organisms. Impression fossils of a cm-sized thalloid organism, Daohugouthallus ciliiferus nov. gen. et spec., are described from a Middle Jurassic deposit nearby Daohugou village, Inner Mongolia, China. The thallus comprises elongate primary axes from which extend lateral and terminal branches that fork once to repeatedly. Extending from all branches (mostly from the lateral margins and tips) are filiform appendages that closely resemble the cilia of certain extant lichens. Some branch tips appear ruptured and covered by minute irregularities, and appear similar to lichen soralia. One specimen is associated with a small seed cone and suggestive of epiphytic growth. The structural similarities with extant lichens, close association with land plants, and the environment in which the organism lived, suggest that the affinity of D. ciliiferus is with the lichens.     

生物表面活性剂修复HOCs污染土壤的研究进展

简要介绍了疏水性有机污染物(HOCs)在土壤环境中积累产生的危害及应用生物表面活性剂(BS)修复HOCs污染土壤的优势.阐明了BS修复HOCs污染土壤的主要机理:BS对HOCs的增溶作用、BS促进土壤中HOCs的解吸、BS促进土壤中HOCs的生物降解.分析了BS的种类及含量、污染土壤对BS的吸附、土壤本身的理化性质等因素对土壤生物修复的影响.探讨了HOCs污染土壤生物修复的发展方向及应用前景.