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41篇 您的检索式:作者名="Darilek"
    题名 作者 年代 出处 被引量
1氧化与还原条件下水稻土重金属形态特征的对比显示文摘还原状态下的水稻土被风干处理后氧化还原等性质发生明显变化,对重金属的形态特征产生影响,进而影响对作物有效性的评价。利用BCR连续萃取法研究了张家港市南部不同pH水稻土在还原和氧化条件下Cu、Pb、Ni和Cd的形态变化状况。结果显示,氧化还原对重金属形态分配具有显著影响,而pH对Ni在还原状态下的形态分配有显著影响,对Cu、Pb和Cd形态分布影响不显著。样品经风干氧化处理后,氧化物结合态重金属均表现为不同程度的降低;Cu残渣态比例增加25%,氧化物结合态和有机结合态比例有所降低;Pb有机结合态比例增加33%,残渣态减少33%,酸可提取态和氧化物结合态变化不大;Ni受氧化还原条件影响更为强烈,表现为酸可提取态所占比例降低超过25%,氧化物结合态亦明显降低,残渣态提高超过60%;对Cd的影响主要表现为有机结合态所占比例降低约15%,残渣态提高约35%,酸可提取态和氧化物结合态变化不明显。氧化状态下的重金属形态并不是重金属在田间的真实状况,可能高估了Pb,低估Cu、Ni和Cd重金属在土壤中的危害性。齐雁冰 黄标 Darilek J L 王志刚 2008生态环境2008,17,6:30
2采样点数量对长三角典型地区土壤肥力指标空间变异解析的影响显示文摘通过对江苏省如皋市888个采样点的不重复随机抽样,探讨了采样点数量对土壤肥力指标空间变异解析的影响。从半方差函数估计的可靠性角度考虑,在长江冲积物形成的土壤上,针对县级农业管理和生态环境规划的土壤肥力指标调查采样,采集250个样点较为合适。另外,仅使用交互验证和独立验证评价半方差函数估计的可靠性及确定采样点数量是不完善的,而平均克里格方差理论上随采样点数量的增加而单调递减,可以作为不同采样点数量条件下,综合评价半方差函数估计可靠性及确定采样点数量的补充指标。王志刚 赵永存 黄标 Darilek Jeremy Landon 孙维侠 2010土壤2010,42,3:28
3苏州市不同区域水稻籽粒重金属积累特征与健康风险评价显示文摘以苏州市7个县市的水稻籽粒为研究对象,在2006年采集的449份水稻籽粒样品的基础上,分析了稻米中Cu、Pb、Cd、Cr和Zn的积累特征,并评价了样品的健康风险。结果显示,苏州市水稻籽粒重金属积累平均含量均不超标,但水稻籽粒Pb存在29.49%的样点超标率,Cu、Cd和Cr的超标样点一般在4个以下。单因子污染指数评价结果显示,水稻籽粒重金属元素污染指数高低顺序为Pb>Cr>Cu、Zn>Cd,其中昆山和吴江水稻籽粒受到Pb的轻度污染。综合污染指数评价表明,水稻籽粒重金属污染处于警戒线级别,且水稻籽粒的污染是由于Pb的积累量较高引起的,其中太仓和张家港两市水稻籽粒属于安全等级,昆山、吴中、相城和常熟处于警戒线等级,吴江风险较高。暴露风险评价结果显示,研究区存在水稻籽粒Cr暴露风险,而水稻籽粒Pb仅在个别县市暴露风险高,整体风险并不高。齐雁冰 黄标 杨玉峰 Darilek J L 赵永存 孙维侠 王志刚 2010农业环境科学学报2010,29,4:25
4Effect of Land Use Conversion from Rice Paddies to Vegetable Fields on Soil Phosphorus Fractions显示文摘Excess phosphorus (P) from agricultural soils contributes to eutrophication in water bodies.Samples (n=60) were taken from sites where rice paddies have been converted to vegetable fields for 0,< 10,10-20,and > 20 years and analyzed for five inorganic P (Pi) fractions,three organic P(Po) fractions,and several soil parameters to investigate how land use conversion affects Pi and Po fractions in a peri-urban area of China with soils characteristic of many agricultural areas of Asia.Significant increases of 33,281,293,and 438 mg kg 1 were found for soluble and loosely bound Pi (SL-Pi),aluminum-bound Pi (Al-Pi),calcium-bound P i (Ca-Pi),and iron-bound Pi (Fe-Pi),respectively,after conversion from rice paddies to vegetable fields.Most of the increase in Pi was in the form of Fe-Pi,which increased from 8% of total P (TP) on paddy soil to 31% on the soil with > 20-year vegetable cultivation,followed by Al-Pi,which increased from 2% to 19% of TP.For Po fractions,there was no significant change in P concentrations.The conversion of land use from paddy fields to high intensity vegetable fields was causing significant changes in soil P fractions.Management practices were causing a buildup of soil P,primarily in the Fe-Pi fraction,followed by Ca-Pi and Al-Pi fractions.If current trends continue,a 30%-70% increase in TP could be expected in the next 20 years.Farmers in the area should reduce P application and use to maximize P uptake.J. L. DARILEK HUANG Biao LI De-Cheng WANG Zhi-Gang ZHAO Yong-Cun SUN Wei-Xia SHI Xue-Zheng 2010Pedosphere2010,20,2:11
520世纪美国土壤学家对中国土壤地理学的贡献显示文摘中美土壤学家之间有着长期的友好合作。对现代中国土壤地理学、乃至整个土壤学的建立和发展起过重要作用的美国土壤学家,按年代大致可以分成两组:第一组是20世纪早期(主要是30年代)的J.L.Buck,C.F.Shaw,R.L.Pendleton和J.A.Thorp;第二组是改革开放(1978年)以后的R.W.Arnold,H.Eswaran,L.P.Wilding和S.W.Buol。龚子同 王志刚 Jeremy Landon Darilek 黄标 张甘霖 2010土壤通报2010,41,6:7
6Changes in soil fertility parameters and the environmental effects in a rapidly developing region of China显示文摘Darilek JL Huang B Wang ZG Qi YB Zhao YC Sun WX Gu ZQ Shi XZ 2009Agriculture Ecosystems & Environment2009,129,:1
7Hereditary multiple exostosis and pain 显示文摘Darilek S Wicklund C Novy D 2005J Pediatr Orthop2005,25,3:1
8Evaluating soil quality indices in an agricultural region of Jiangsu Province, China显示文摘Qi YB Darilek JL Huang B Zhao YC Sun W Gu ZQ 2009Geoderma2009,149,:1
9Pre-and postnatal genetic testing by array-comparative genomic hybridization :genetic counseling perspectives显示文摘Darilek S Ward P Pnrsley A 2008Genet Med2008,10,1:1
10The electrical leak location method for geomembrane liners显示文摘Glenn T Darilek Jorge O Parra 1989Journal of Hazardous Materials1989,21,:1
11Detecting leaks in geomembranes显示文摘Daren L Laine Glenn T Darilek 1993Civil Engineering1993,,8:1
12Changes in soil fertility parameters and the environmental effects in a rapidly develo ping region of China 显示文摘Darilek J L Huang B Wang Z 2009Agriculture Ecosystems &Environ- ment2009,129,1:1
13Evaluating soil quality indices inan agricultural region of Jiangsu Province, China显示文摘Qi Y B Darilek J L Huang B 2009Geoderma2009,149,:1
14Pre-and postnatal genetic testing by array-comparative genomic hybridization:genetic counseling perspectives显示文摘Darilek S Ward P Pursley A 2008Genet Med2008,10,1:1
15Evaluating soil quality indices in an agricultural region of Jiangsu Province, China显示文摘Qi Y B Darilek J L Huang B 2009Geoderma2009,149,:1
16Pre- and postnatal genetic testing by array-comparative genomic hybridization: genetic counseling perspectives 显示文摘Darilek S Ward P Pursley A 2008Genet Med2008,10,1:1
17Changes in soil fertility parameters and the environmental effects in a rapidly developing region of China显示文摘Darilek J L Huang B A Wang Z G 2009Agriculture Ecosystems & Environment2009,129,13:1
18Evaluating soil quality indices in an agricultural region of Jiangsu Province,China显示文摘Qi Y B Darilek J L Huang B Zhao Y C Sun W X Gu Z Q 0,,:1
19Detecting leaks in geomembranes 显示文摘Daren L Laine Glenn T Darilek 1993Civil Engineering1993,63,8:1
20Detecting leaks in geomembranes显示文摘Daren L Laine Glenn T Darilek 1993Civil Engineering1993,63,8:1
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