科尔沁草地植被特征

科尔沁草地有维管束植物１６４２种，隶属１２４科，５４属，其中菊科，禾本科，豆科，蔷薇科合计１５６属，５９１种，分别占全地区总属数，总种数的２８．８４％和３５．９９％，全部植物属于１５个区系成分，以达乌尔－蒙古成分起主导作用。多年生草本植物（１００９种）是构成科尔沁草地植被的主体，中生植物（１１４１种）居优势地位，沙生植物和盐生植物的广泛分布也是本地区植被的重要特征，草原植被水平分布规律基本上呈西北     

青海省贵德县天然草场植被类型特征及其分布规律

贵德县天然草场面积28.63×104hm2,其中可利用草场面积25.95×104hm2,共分为9个草场类,22个草场组,51个草场型。本文阐述了贵德县草场植被类型特征及其分布规律,供全县广大畜牧业工作者参考。     

甘南州夏河县天然草场植被类型特征及萁分布规律

甘南州夏河县天然草场面积72．488×10^4hm2,其中可利用草场面积69．525×10^4hm^3,分7个草场类,13个草场组,18个草场型。本文阐述了夏河县草场植被类型特征及其分布规律,供畜牧、草业相关业务工作者参考。     

呼伦贝尔植物区系组成及植被特征

通过对内蒙古呼伦贝尔草地植被系统分析表明，该草地有维管束植物１３５４种，隶属１０８科、４６８属，分属于１５个植物区系，５个生活型及４个水分生态类型，在大兴安岭岭东植被垂直分布明显，而岭西草原植被径向分布分明。上述特征主要是该草地所处地理位置和东北一西南走向的大兴安岭对气候的影响造成的。     

浅谈严重退化草场的植被恢复途径

通过围栏封育草场,恢复退化严重的草场植被,对封育禁牧两年后的草场分析温型荒漠草原类草场植被结构、产草量的变化以及围栏投资的效益。     

黄河源区天然草场的植被类型及其特点

在广泛调查的基础上，对黄河源头区天然草场中的高寒草原、高寒灌丛、高寒沼泽与水生植被、高寒沼泽草甸、高寒草甸、高山垫状植被、高山冰缘和流石坡稀疏植被等主要草场植被类型的分布范围、群落结构和组成及其年轻性、脆弱性、敏感性、原始性、典型性等特点进行了论述，最后提出了对黄河源区天然草场植被保护的意见。     

夏季休闲对天然草场植被动态变化的研究

夏季休闲对天然草场植被动态变化的研究李枫（北京农业大学动物科技学院１０００９４）杨杰，刘月华（内蒙古牧业学校）前言＊天然草地是草原畜牧业的物质基础和能量转化的＊源地。目前，由于草地缺乏合理利用和适宜管理，造成＊草场能量与物质入不敷出，生产力下降，生态...     

甘南亚高山草甸阳坡禾草草场植被及其特征

在对甘南亚高山草甸阳坡禾草草场植被广泛调查的基础上,对其植被类型和特征进行了论述,同时提出了对这类草场植被的保护意见。     

浅谈监测天然草场产量和植被群落组成的新方法

本文主要介绍了从澳大利亚引进的天然草场监测方法，并用3年的实践应用数据分析结果来证明此方法的可取性。     

循化县植被类型及分布

根据遥感影像TM数据信息及其文献资料,结合野外验证研究循化县植被类型及其分布。结果表明循化县共有森林、灌丛、草原、荒漠、草甸5个植被型组,20个植被群系;并且植被垂直分布明显。     

化隆县草地植被类型及其利用

青海省化隆县地处青藏高原和黄土高原的过渡带,受青藏高原和黄土高原的影响,自然植被与青藏高原上的高寒植被和黄土高原上的植被类型有一定联系,从而形成该区较为复杂的植被类型。据调查,该地区的主要草地植被类型包括荒漠草原、草原、山地灌丛和高寒草甸,并在该地区形成明显的垂直分布。在海拔较低的黄河河谷区分布着与黄土高原相连的植被类型;而海拔较高的山地则分布与青藏高原相连的高寒植被,形成独具特色的植被类型。     

ULTRASONOGRAPHIC APPEARANCE OF URETHRAL TRANSITIONAL CELL CARCINOMA IN TEN DOGS

The mucosal margin of the urethra is best assessed by positive contrast urethrography, but ultrasonography offers complementary information such as urethral wall thickness and size of medial iliac lymph nodes. Ultrasonography of the urethra is quick, noninvasive and does not require sedation or general anesthesia. In patients with complete urethral obstruction, ultrasonography may be the only way to image the urethra. Twelve dogs which were presented to Tufts University School of Veterinary Medicine with clinical signs referable to the urinary bladder, urethra or vagina were examined ultrasonographically. Seven were neutered females and five were neutered males. Each dog had a hyperechoic, nonshadowing line at the epithelial surface of the proximal urethra. In the seven female patients and one of the males, the urethral wall was also thick and hypoechoic to surrounding tissue. In the other males, the urethral epithelial changes were at the level of the prostate, and the limits of the urethra were not visible. In six dogs, the urethral change was the only abnormality seen, while in six, bladder wall, bladder luminal and/or prostatic parenchymal changes were also detected. Three patients had hydronephrosis, and one had enlarged medial iliac lyumph nodes. Biopsies were obtained via suction with urinary catheterization (n = 6), exploratory celiotomy (n = 3), urethroscopy (n = 2), or at post-mortem (n = 1). A histopathologic diagnosis of urethral transitional cell carcinoma was obtained in ten dogs. The ultrasonographic appearance was not pathognomonic for transitional cell carcinoma, as one dog with transitional cell dysplasia and one dog with severe ulcerative and necrosupperative cystitis and urethral stricture had similar findings.     

化隆县草地生产特点及利用

从草场分布,牧草产量,生产利用现状等方面总结,分析了草地生产基本规律和特点,提出相应的利用与改良建议,为因地制宜的开发和利用草地自然资源,加快当地草地畜牧业发展进行了有益探索。     

都兰县天然草地有毒植物调查

简述了都兰县天然草地有毒植物种类、毒性原理及毒草分布,提出防治毒草的对策,为今后进一步开展毒草防治和研究工作提供参考。     

SONOGRAPHIC INVESTIGATION OF TRANSITIONAL CELL CARCINOMA OF THE URINARY BLADDER IN SMALL ANIMALS

This report compares results from imaging of transitional cell carcinoma of the urinary bladder in 15 dogs using intravenous urography, double-contrast cystography, and ultrasonography. Intravenous urography demonstrated filling defects in the urinary bladder in 3 of the 5 cases examined with this modality. Double-contrast cystography identified bladder masses in 8 of 10 animals. Ultrasonography was the only imaging modality which detected bladder masses in all patients.     

气候变暖背景下乌兰县近20年气候特征分析

统计1996～2016年乌兰县气温、降水等气象资料得出,年平均降水量为211.0mm。雨季时间为50d,非雨季时间为218d;年平均气温为4.2℃,夏季和秋季短暂、冬季漫长;平均相对湿度为41.8%,湿润天数为106d;平均风速为2.2m/s,年内风速相对较大时段所占的比例为24%;年降水量、年平均气温、年平均最高气温每10a分别增加45.281mm、0.299℃、0.609℃;年相对湿度、年日照时数、年总辐射、年平均气压、年平均风速每10a分别减少0.785%、24.891h、25.074MJ·m^-2、0.125hpa、0.261m·s^-1。     

共和县天然草地生态植被恢复现状与效果分析

近年来,共和县为加快恢复天然草地植被,有效提高草地再生能力和牧草产量及牧草品质,充分利用国家专项建设资金,通过综合治理,逐步实现了草地资源可持续利用及畜牧业经济快速增长。     

海晏县麻黄科植物种类形态特征及经济用途

我国麻黄科的植物仅有一属（麻黄属）12种4变种,我省有7个种,海晏县内有4个种,其具有较高的药用价值和良好的固沙作用,可作为骆驼的饲料。研究麻黄植物对环湖地区生态环境的改善将有十分重要的作用,也是国家落实科学发展观,实施西部大开发战略,进行退耕还林（草）工程必不可少的优良种苗。     

TRANSITIONAL CELL CARCINOMA OF THE URETHRA IN FOUR FEMALE DOGS: ITS URETHROGRAPHIC APPEARANCE

ansitional cell urethral carcinoma in four female dogs is reported. Lesion distribution in the proximal two thirds of the urethra and the radiographic appearance with retrograde positive contrast urethrography were similar in each dog. The normally smooth longitudinal urethral striations were replaced by multiple small, poorly marginated intraluminal masses that resulted in a generalized moth-eaten appearance. Extension of contrast medium into the periurethral tissues also occurred. Retrograde urethrography, a simple diagnostic technic, aided in establishing a differential diagnosis in dogs that had urine retention and stranguria.