近四十年东北夏季低温冷害的气候特征

本文利用１９５１－１９９０年５－９月月平均气温计算东北三省５１个站的夏季低温冷害频率和严重低温冷害频率。其频率随纬度的增高而增大，山区频率比同纬度的平原地区大。     

“谈虎色变”泥石流

今年8月份以来,我国甘肃舟曲,四川绵竹、汶川,云南贡山等地相继发生山洪泥石流灾害。8月7日22时许,舟曲突发强降雨,县城北面的罗家峪、三眼峪泥石流下泄,由北向南冲向县城,造成沿河房屋被冲毁,泥石流阻断白龙江、形成堰塞湖。据不完全统计,舟曲＂8·8＂特大泥石流灾害中遇难1400多人,失踪300多人。     

Joint effects of cadmium and lead on seedlings of four Chinese cabbage cultivars in northeastern China

In northeastern China, large area of vegetable land has been simultaneously polluted by cadmium (Cd) and lead (Pb). Joint e ects of Cd and Pb on Chinese cabbage (Brassica pekinensis L.) were investigated using the seed germination and sand culture method. Four Chinese cabbage cultivars including Kangbingjinchun (KB), Dongyangchunxia (DY), Qinglvwang (QL) and Qiangshi (QS) from Shenyang in northeastern China were adopted in this study. The results showed that there were positive linear relationships between the inhibitory rate of biomass, root and shoot elongation and the concentrations of Cd and Pb. In particular, root elongation was more sensitive to joint stress of Cd and Pb. The activity of superoxide dismutase and the content of malondialdehyde (MDA), soluble protein (SP) and proline (PRO) changed significantly with increasing exposure concentration of Cd and Pb. The decrement in the activity of antioxidative enzymes, the content of SP and accumulation of MDA were relatively low in KB and QS. PRO played an important role in resisting Cd and Pb stress.     

日本落叶松在滇东北造林适应范围分析

本文根据滇东北地区的气候特点以及土壤特点,结合日本落叶松的生物学特性,对其在滇东北造林的适应范围进行了分析,以期为日本落叶松在滇东北地区的造林栽培起到指导性作用。     

清洁生产是振兴东北老工业基地必由之路

结合振兴东北老工业基地的国策 ,从东北现状、技术改造、资源生态、政策导向、鲁尔区的改造启示五个方面进行了分析 ,提出了一些关于如何振兴老工业基地的对策建议。     

东北区夏季低温冷害的长期预报

利用东北区三大站(沈阳、长春、哈尔滨)50年(1951-2000年)夏季平均气温、前冬和夏季500hPa高度场、距平场及副高面积指数和海温场资料,对东北夏季低温冷害的环流特征进行了分析,建立了东北区夏季低温冷害预报模式;用春季高度距平平均场建立了夏季低温冷害天气预报模型。结果表明,东北区低温冷害与冬季副高面积指数及500 hPa乌拉尔山附近的高度值呈正相关,与冬季西风漂流区附近(40°~45°N,160°~150°N)海温场呈反相关;所建方程及模式预报拟合率和预报准确率都比较高,且可提前3个月左右进行预报。     

东北老工业基地现状综合评价

东北老工业基地是我国最重要的老工业基地,振兴战略提出后,东三省的经济、社会和环境都会得到相应的发展。为了便于振兴战略更有效的实施,检验战略实施后的成效,需对现状进行综合评价。基于此,本文采用相对综合评价法,对东三省的经济、社会、资源和环境进行综合评价,对比与小康水平的差距,查找主要问题。     

Spatial Autocorrelation Analysis on Regional Economic Disparity of Northeast Economic Region in China

Popular regional inequality indexes such as variation coefficient and Gini coefficient can only reveal overall inequality, and have limited ability in revealing spatial dependence or spatial agglomeration. Recently some methods of exploratory spatial data analysis such as spatial autocorrelation have provided effective tools to analyze spatial agglomeration and cluster, which can reveal the pattern of regional inequality. This article attempts to use spatial autocorrelation at county level to get refined spatial pattern of regional disparity in Chinese northeast economic region over 2000-2006 （2001 absent）. The result indicates that the basic trend of regional economy is an increasing concentration of growth among counties in northeast economic region, and there are two geographical clusters of poorer counties including the counties in western Liaoning Province and adjacent counties in Inner Mongolia, poorer counties of Heihe, Qiqihar and Suihua in Heilongjiang Province. This article also reveals that we can use the methods of exploratory spatial data analysis as the supplementary analysis methods in regional economic analysis.     

猛于虎的车祸悲剧，值得泣血反思

车祸瞬间母亲将怀中女儿抛出,自己命丧车轮 10月25日,一名20多岁的女子怀抱两个月大的女婴横穿佛山市南海丹灶联沙大道时不幸惨遭车祸,因母亲反应迅速,及时将怀中女婴抛离怀中,女婴落地后身体只受轻伤,而母亲当场丧身车轮下。     

东北漫岗区村落的分布特征分析

对黑龙江省绥化市的6个村落、九三垦区鹤山农场的8个村落和嫩江县双山镇的蔡窑村进行实地考察。依据鹤山农场1980-1995年气温、日照时数、风速、降水量和≥5级风日数的气象资料,同时考虑到地形、土壤等因素,分析了东北漫岗区村落分布的特征,即：日照和太阳辐射影响了村落分布的坡向,就不同坡向而言,村落分布数量大小顺序为：东南坡、西南坡、东北坡、西北坡;风影响室温,并可能对房屋造成破坏,故大部分村落分布在坡中部以下;降水量和土壤特性决定了村落的分布下限;地理环境因素和人的选择性、能动性共同决定了东北漫岗区村落呈狭长形沿坡分布。