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长岛自然保护区(120°35′28″~120°56′36″E,北纬37°53′30″~38°23′58″N)位于山东半岛与辽东半岛之间的渤海海峡之中,山东省长岛县境内,由大小32个岛屿组成,总面积5015.2hm~2,其中陆地面积3910.0hm~2,湿地海域1105.2hm~2。1988年国务院批准为“国家级海岛自然保护 相似文献
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甘南藏族自治州位于青藏高原东北边缘,甘肃省西南部,地处东经100°15′15″-104°45′30″,北纬33°06′30″-35°34′00″。境内多为高山丘陵地带,地形复杂,气候寒冷,海拔高,最高海拔在4900m,最低为1172m,平均海拔在3000m左右,属于高寒阴湿地区。 相似文献
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1概况巴里坤哈萨克自治县是新疆维吾尔自治区东北部的一个边境县,位于天山山脉东段与东准噶尔断块山系之间的草原上,地理坐标为东经91°19′30″～94°48′30″、北纬43°21′～45°5′19″,东 相似文献
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独山县位于贵州南部前沿,地处东经107°17′55″-107°50′05″,北纬25°12′45″-26°01′05″之间。全县总面积2 445 km2,喀斯特山区面积1 375.3 km^2。＂十一五＂期间,独山县按照大力发展＂两牛（肉牛、奶牛）一猪一羊＂思路发展生态畜牧业取得了一定的成绩。全县已累计建成各类养殖小区60个，养殖大户1623户， 相似文献
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贵州麻阳河国家级自然保护区位于黔东北沿河土家族自治县及务川仡佬族苗族自治县接壤处,地理位置为北纬28°37′30″-28°54′20″,东经108°3′53″-108°19′45″,总面积31113公顷。其丰富的资源和瑰丽的自然风光成为黑叶猴繁衍生息的天堂…… 相似文献
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本文记述寄生于红嘴相思鸟[Leiothrixlutea(scopoli)]肌胃的一线虫新种。新种特征:缺侧翼,具粗大环纹,雄虫尾部腹面复盖盾片和大小相等的尾翼,尾乳突排列对称且肛后乳突特大,引带铲形,有别于其他种。 相似文献
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Two surveys of opinions about wildlife conservation were carried out in Hunan Province, China, before and after the severe acute respiratory syndrome (SARS) epidemic. Hunan is the northern neighbor of Guangdong Province, where the first SARS case was reported. The custom of consuming wild meat was not common in Hunan 30 years ago. However, in recent years, consumption of wildlife such as snakes has spread to northern China. We handed out 1300 questionnaires between 22 February and 10 May 2002, before the SARS epidemic. Survey sites included the provincial capital, major cities, towns, and villages in Hunan. Another 1300 questionnaires were distributed between 10 March and 10 May 2004, after the SARS epidemic. The 2004 survey covered the same sites as the 2002 survey. Questionnaire recovery rates for the 2002 and 2004 surveys were 81.2% and 84.6%, respectively. The valid return rate was 73.0%. Frog, snake, hare, and pheasant were the wild meats most frequently eaten by local people. At the time of the first survey, more than 80% of interviewees claimed to have eaten frogs. That number had reduced to 60% by the time of the second survey. Monkey, Chinese pangolin, and bear paw were the wild meats least frequently eaten. Although palm civet was suspected to be the carrier of SARS, it was interesting to note that, after the SARS epidemic, the proportion of people surveyed who ate palm civets had declined only slightly. The results of the surveys indicate a low level of conservation consciousness; however, after the SARS and bird flu epidemics, there were obvious changes in the conservation consciousness of people in Hunan Province. We recommend some measures that could be taken to change the habits of people who consume wildlife. 相似文献
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本文建立了一种简单、快速测定渔业水体和渔业饲料中五氯苯酚的液相色谱串联质谱分析方法。渔业水体采取固相萃取进行富集净化,渔业饲料样品经氨化乙腈提取,MAX固相萃取小柱净化,质谱采用选择反应监测负离子模式测定进行分析。结果表明:方法线性为0.5～50 ng/mL,相关系数大于0.9999;渔业水体的检出限(LOD)和定量限(LOQ)为0.05μg/L和0.1μg/L,渔业饲料的LOD和LOQ为0.8μg/kg和1.6μg/kg,该方法在水样和渔业饲料样品中的平均加标回收率为78.6%～92.1%。采用该方法对长沙市周边的湖泊和池塘地表水和渔业饲料样品进行检测,在水样中测得五氯苯酚浓度为0.64～1.22μg/L。 相似文献
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文章旨在评价饲粮中添加紫花苜蓿多糖对仔猪生长性能及小肠形态的影响。试验选取100头体重接近的28日龄断奶仔猪,随机分为对照组和试验1、2、3组,适应期7d,期间饲喂基础饲粮,正式试验时试验组分别在对照组基础饲粮中添加0.025%、0.05%、0.075%的紫花苜蓿多糖,处理42d。结果发现,紫花苜蓿多糖处理组仔猪平均末重、ADG显著提高(P<0.05),FCR降低(P<0.05),而ADFI无显著变化(P>0.05)。相比于对照组,试验1、2、3组仔猪平均末重分别增加7.8%、11.6%、10.2%(P<0.05),ADG分别增加12.4%、18.2%、15.9%(P<0.05),FCR显著降低10.1%、12.5%、10.2%(P<0.05)。同时,饲粮中添加紫花苜蓿多糖显著改变小肠肠道形态,相比对照组,试验2、3组仔猪十二指肠V/C分别降低8.9%、7.7%(P<0.05);试验2、3组仔猪空肠VH分别增加8.3%、7.0%(P<0.05),CD分别降低8.8%、7.7%(P<0.05),试验1、2、3组V/C分别增加7.6%、18.8%、15.9%(P<0.05)。除此之外,试验2、3组仔猪回肠VH较对照组分别增加9.4%、6.2%(P<0.05),CD分别降低10.0%、9.6%(P<0.05),试验1、2、3组V/C分别增加10.4%、21.5%、17.5%(P<0.05)。结果表明,饲粮中添加紫花苜蓿多糖显著改善仔猪小肠形态,促进其生长发育,添加量为0.05%时效果最佳。 相似文献
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Liu GH Li RC Huang ZB Yang J Xiao CT Li J Li MX Yan YQ Yu XL 《Tropical animal health and production》2012,44(7):1335-1339
The prevalence of porcine sapovirus infection in weanling pigs was investigated in Hunan Province, China, between August 2006 and October 2007. A total of 153 diarrheic fecal samples from ten intensive pig farms from ten representative administrative regions in Hunan province were examined for porcine sapoviruses using RT-PCR. Twenty-two of 153 (14.37?%) samples were found to contain porcine sapoviruses. Phylogenetic analysis showed that all the porcine sapovirus isolates in Hunan Province belonged to the porcine sapovirus genogroup III. The results of the present investigation have implications for the control of porcine sapovirus infection in pigs in Hunan Province, China. 相似文献
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本研究采用空间序列代替时间序列方法,研究衡阳紫色土丘陵坡地植被恢复过程0～10、10～20与20～40 cm土层土壤可矿化碳库特征。结果表明：恢复过程中土壤有机碳含量、可矿化碳含量和矿化速率随土层加深而减少,随恢复进程而增加;矿化率随恢复进程增加,随土层加深先减后增再分布均匀;累积矿化排放量及其速率随恢复进程增加,其速率随培养时间延长而减小;qCO2值随恢复进程和土层加深而递减;土壤可矿化碳含量与凋落物现存量、质量损失率的相关系数r分别为—0.698*和0.915**（*P<0.05,**P<0.01）。研究表明,随着植被恢复进行,土壤生境由早期干扰强烈转向中后期日趋稳定,土壤固碳能力由早期差、潜力大转向中后期强、潜力小。 相似文献