Heavy metal concentrations in redeveloping soil of mine spoil under plantations of certain native woody species in dry tropical environment, India

Total concentration of heavy metals(Cd, Cr, Cu, Fe, Pb, Ni, Mn and Zn) was estimated in the redeveloping soil of mine spoil under 5-yr old plantations of four woody species namely: Albizia lebbeck, Albizia procera, Tectona grandis and Dendrocalamus strictus.The data recorded in the present study were compared with other unplanted coal mine spoil colliery, which was around to the study site and adjoining area of dry tropical forest. Among all the heavy metals, the maximum concentration was found for Fe and minimum for Cd.However, among all four species, total concentrations of these heavy metals were recorded maximally in the plantation plots of T. grandis except for Fe, while minimally in A. lebbeck except for Zn, whereas, the maximum concentration of Fe and Zn was in the plantation plots of D. strictus and A. procera. Statistical analysis revealed significant differences due to species for all the heavy metals except Cu.Among four species, A. lebbeck, A. procera and D. strictus showed more efficient for reducing heavy metal concentrations whereas T. grandis was not more effective to reduce heavy metal concentrations in redeveloping soil of mine spoil.     

印度的环保NGO

最近，我随中国环境报社环境考察交流采访团赴印度考察。在印度前后停留了七天，先后去了德里、果阿、孟买、普纳，阿哥拉等五城市，虽然走马观花，浮光掠影，但印度环保民间组织的孜孜以求给我们留了久久不能忘怀的印象。     

Kachchh (India) earthquake 2001--causes,severity and impact on groundwater resources

Earthquake 2001 in Bhuj region of Kachchh district of Gujarat(India) was one of the most devastating earthquakes in the Indian history. This earthquake has caused severe damage to human life and properties. The impact of earthquake on groundwater resources at many locations was significant. Steep rise in static water level due to earthquake was observed at Bhachau and Chandarani. At other location groundwater followed the declining trend.     

直面灾难:美国鉴于印度博帕尔毒气泄漏事件采取的化学品事故应对措施

20多年前，1984年12月3日的后半夜，一股充满甲基酸的毒云从印度博帕尔联合碳化物公司（Union Carbide）的工厂溢出，造成2000多人死亡，上万人受伤，该事件至今仍是世界上最严重的工业事故。4个月以后，该公司的一个经理向美国国会保证，类似博帕尔的事故不会发生在其位于西弗吉尼亚州研究所的同类工厂。但是数月后，     

印度博帕尔毒气泄漏事件

2005年12月3日，摇曳的烛光、伤心的眼泪．又一次回放了那段不堪回首的记忆。这一天是印度博帕尔毒气泄漏事件21周年。[编者按]     

我国西南地区喀斯特森林树木年轮对气候变化的响应

利用贵州省2个典型喀斯特地区与1个非喀斯特地区的6个优势树种(化香树Platycarya strobilacea为重复树种)的树轮宽度资料,建立了6个树轮宽度年表,研究了不同地区不同树种的树木年轮对近50年来气候变化的响应异同,探讨了影响6个优势树种生长的气候限制因素。结果表明,季风期前的水热条件是喀斯特地区针叶树和阔叶树径向生长的最主要的气候限制因素。季风期前降水减少、月均温升高,导致土壤水分蒸发加快,加强了水分胁迫,不利于喀斯特地区针叶树和阔叶树的生长。帕尔默干旱指数虽表明喀斯特地区未达到干旱胁迫程度,但实际上水分渗漏加剧了喀斯特地区针叶树和阔叶树生长的水分胁迫。非喀斯特地区采样点的高海拔导致的低温,减少了春冬季节土壤水分蒸发。并且非喀斯特地区土壤和地形有利于水分涵养,同时,较高海拔的地形改变了季风期前的降水格局,消除了季风到来前树木生长的降水限制,因此,降水并不是喀斯特地区树木生长的限制因子;但其针叶树的径向生长受到上一年12月的温度控制,产生正响应信号,阔叶树径向生长仅受到生长季温度、降水增加带来的较小促进。     

印度煤矿的安全监管

煤炭工业概况煤炭是印度的主要能源。在一次能源消费构成中,煤炭占60%左右。煤炭部负责全国煤炭资源的勘探与开采管理。煤炭企业主要有印度煤炭公司和辛格雷尼煤炭公司。全国现有生产煤矿564个。2002年产煤322.64Mt,煤炭消费量323.99 Mt。矿山生产安全监管机构的设置印度矿山生产安全监管由矿山安全管理总局负责。矿山安全管理总局的机构按职能设置,划分矿山安全监察、技术支持和     

Passive air sampling of organochlorine pesticides in a northeastern state of India, Manipur

Thirty-six polyurethane foam disk passive air samplers (PUF-PAS) were deployed over a year during January to December, 2009 at three locations, i.e., Imphal (urban site), Thoubal (rural site) and Waithou (alpine site) of Manipur, to assess the seasonal local atmospheric emission of selected organochlorine pesticides (OCPs). The average concentration of HCHs monitored at mountain site during hot season (Mar, Apr, and May) and rainy seasons (Jun, Jul, Aug, and Sep) were 403 and 349 pg/m3, respectively. DDTs had a high concentration with 384 pg/m3 at rural site and 379 pg/m3 at urban site during hot seasons. Endosulfans and chlordane were found high in concentration during hot seasons (260 pg/m3) and low during retreating monsoon seasons (44 pg/m3) at rural site. Most of the OCPs concentrations were high during cultivation period. The OCP concentrations of rainy season were highly correlated (p < 0.01) with OCPs of hot seasons. Further, positive correlation (p < 0.05) was also obtained between cold seasons and retreating monsoon. Principal component analysis showed a significant correlation among the four seasons and distribution pattern of OCPs in air. Back trajectory analysis by using HYPSLIT model showed a long range air transport of OCPs to the present study area. Present OCP levels at Manipur is an outcome of both local emission and also movement of air mass by long range atmospheric transport.