|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Leaching and Redistribution of Nutrients in Surface Layer of Red Soils in Southeast China显示文摘The leaching and redistribution of nutrients in the surface layer of 4 types of red soils in Southeast China were studied with a lysimeter experiment under filed conditions.Results showed that the leaching concentrated in the rainy season(from April to June).Generally,the leaching of soil nutrients from the surface layer of red soils was in the order of Ca>Mg>K>NO3-N,In fertilization treatment,the total amount of soil nutrients leached out of the surface layer in a red soil derived from granite was the highest in all soils.The uptake by grass decreased the leaching of fertilizer ions in surface layer,particularly for No3-N,Soil total N and exchangeable K,Ca and Mg in the surface layer decreased with leaching and grass uptake during the 2 years without new fertilization of urea,Ca(H2PO4)2,KCl,CaCO3 and MgCO3,Ca moved from the application layer(0-5cm) of fertilizer and accumulated in the 10-30cm depth in the soils studied except that derved from quaternary red clay.The deficiency of soil exchangeable K will become a serious degradation process facing the Southeast China. | SUN BO ZHANG TAOLIN and ZHAO QIGUO(Institute of Soil Science, the Chinese Academy of Sciences, P.O. Box 821, Naniing 210008 China) | 2000 | Pedosphere2000，10，2： | 14 |
| 2 | Predicting As,Cd and Pb uptake by rice and vegetables using field data from China显示文摘Plant uptake factor(PUF),single-variable regression of natural log-transformed concentrations in rice grain/vegetables versus natural log-transformed concentrations in soil and multiple-variable regression with soil concentrations and pH,was derived,validated and compared based on the paired crop and soil data collected from studies regarding As,Cd and Pb contaminated croplands in China.Results showed that the median value of PUF did not present deterministic prediction.But after natural logarithm transformation,the PUF followed Gaussian distribution which could be useful in risk assessment.The single-variable regression models were significant for As,Cd and Pb uptake both by rice and vegetables;however,the standard errors of all the regressions were comparatively large.Soil pH as a variable was generally significant but it only contributed positively to model fit for Cd uptake.After model comparison and selection,the upper 95% prediction limits of the multiple regression model for Cd uptake by rice was recommended to calculate screening value of Cd for paddy soil based on the limit for Cd concentration in rice grain. | Hongzhen Zhang Yongming Luo Jing Song Haibo Zhang Jiaqi Xia Qiguo Zhao | 2011 | Journal of Environmental Sciences2011，23，1： | 12 |
| 3 | Resource and Environmental Quality Changes and Adjustment Principles for Sustainable Development in Rapidly Developing Coastal Region of Southeastern China显示文摘Problems in water-land resources and environmental quality increase with the fast economic development in the coastal region of southeastern China. This region has the highest density in population, industry and towns in China, and the large export-oriented economy makes itself a strategic importance while China enters into international markets. The problems facing to this region include arable land reduction, land degradation aggravation, high percentage of built-up land with high rate of expansion, expanded non-point pollution, deteriorated water quality, decreasing biodiversity, destroyed ecosystems, severe air pollution, frequently occurred acid rain, and multi-pollutants. The important research fields in the near future should include a) influence of high-intensity exploitation of resources on changes of environment quality and its feedback; b) interface processes, key mechanisms and adjustment principles for degradation of water-, land-, and air-resources and environmental quality; c) evolvement processes and nurturing theory of biodiversity and ecological resources; and d) spatio-temporal variation and human-induced effects on regional resources and environment quality. Strategies for sustainable development in the region are as follows: a) controlling to ensure basic cultivated land area; b) enforcing remediation of polluted water environment, and controlling non-point pollution; c) strengthening ecological construction and ecological security; and d) controlling multi-pollution and preventing trace toxic pollutants. | ZHAO QIGUO Institute of Soil Science, the Chinese Academy of Sciences, P. O. Box 821, Nanjing 210008 (China) | 2001 | Pedosphere2001，11，4： | 9 |
| 4 | Nitrogen Mineralization of Prunings of Six N_2-Fixing Hedgerow Species in a Dry Valley of the Jinsha River显示文摘A litterbag experiment of 12 weeks was conducted to study nitrogen mineralization process of prunings of six nitrogen-fixing hedgerow species in a dry valley of the Jinsha River. Prunings were incorporated into soil or used as mulch. The results indicated that pruning N of the six hedgerow species was mineralized fast in the first week and then decreased slowly in the rest of the study period. When prunings were incorporated into soil, the amount of nitrogen mineralized by the end of the first week accounted for 69.9%, 58.2%, 54.5%, 43.0%, 29.6% and 20.6% of the total N in prunings of Desmodium rensonii, Tephrosia Candida, Leucaena leucocephala, Albizia yunnanensis, Acacia dealbata, and Acacia mearnsii, respectively. When prunings of L. leucocephala were used as mulch materials, the amount of nitrogen mineralized in the first week was 16.2% less than that of prunings incorporated into soil. The mineralization pattern of pruning N could be simulated by an exponent model Nt% = N01% (1 ?exp(梜1t))+ No2% (1 ?exp(梜2t) where Nt% is cumulative mineralized N in time t, N01 % and No2 % are readily and less readily mineralizable N in prunings, respectively, and k1 and k2 are rate constants. A half-life period of pruning nitrogen mineralization could also be determined by this model. The nitrogen content in the pruning residues decreased quickly in the first week but fluctuated thereafter. The initial C/N ratio was negatively related to the mineralization rate of prunings. | SUN HUI, TANG YA and ZHAO QIGUO Institute of Soil Science, the Chinese Academy of Sciences, Nanjing, 210008 (China) Chengdu Institute of Biology, the Chinese Academy of Sciences, Chengdu 610041 (China) | 2002 | Pedosphere2002，12，1： | 7 |
| 5 | Pedosphere and Its Effect on Global Changes显示文摘With development of modern geoscience, particularly development of environmental sciences, the contemporary soil science is undergoing great changes in both research contents and scope. Soil is not onlya certain substance or a certain independent natural historical body but also a spheric layer with peculiarstructure and functions in the earth system. From the viewpoint of the geo-biosphere system of earth, soilscience does deal not only with the soil substances per se but also more importantly with the relationshipsamong soil, the other spheres and the human survival environment in view of the 'pedosphere'. This is thenew orientation of soil science today and will affect profoundly the studies on the human survival environmentand global changes. To throw more light on this subject, the present paper intends to address the conceptionof pedosphere and its role in global changes. Also addressed are series of environmental issues in China andtheir relations to the global changes. Moreover, research orientation and priorities are indicated, includingexploitation and protection of the soil resources, soil fertility and sustainable agricultural development, construction of the ecological environment, and the material cycling in pedosphere and its relation to globalchanges. | ZHAO QIGUO and CAO HUI(Institute of Soil Science, the Chinese Academy of Sciences, P.O. Box 821, Nauling 210008 China) | 2000 | Pedosphere2000，10，2： | 5 |
| 6 | Leaching of Nutrient Elements in a Red Soil Derived from Quaternary Red Clay显示文摘A red soil derived from Quaternary red clay was employed to study nutrient leaching with soil columns repacked in laboratory. The objective was to identify the effects of fertilization practices on leaching patterns and magnitudes of Ca2+, Mg2+, K+, NH+, and NO-. The treatments were CK (as a control), CaCO3,CaSO4, MgCO3, Ca(H2PO4)2, urea, KCI, and multiple (a mixture of the above-mentioned fertilizers). The fertilizers were added to the bare surface of the soil columns, and then the columns were leached with 120 mL deionized water daily through peristaltic pumps over a period of 92 days. Leaching processes of NH+, and NO- were only measured in CK, urea, and multiple treatments which were directly related to N leaching.Results showed that sole application of CaSO4, and Ca(H2PO4)2 scarcely had any effect on the leaching losses of Ca2+, Mg2+, and K+; the application of MgCO3 stimulated the leaching of Mg2+; the application of CaCOs promoted the leaching of Ca2+, Mg2+ and K+; urea treatment also promoted the leaching of K+ and NH+, and NO- leaching mainly occurred at late stage of leaching process in particular; under KCI treatment, leaching of Ca2+, Mg2+, and K+ was promoted to a large extent; under multiple treatment,leaching of Ca2+, Mg2+, K+, NH+, and NO- was all increased and NO- was mainly leached at the end of leaching process and still had a trend of increase. | SHEN RENFANG and ZHAO QIGUO(Laboratory Of Material Cycling in Pedosphere, Institute of Soil Science, the Chinese Academy of Sciences,P.O. Box 821, Nanjing 210008 (China)) | 1998 | Pedosphere1998，8，1： | 5 |
| 7 | Spatial Distribution and Changes of Heavy Metals of Agricultural Lands in Typical Pregrading Coast in Dongtai City,Jiangsu Province,China显示文摘According to the historical changes of coastal lines, seven soil sampling districts, from land to sea, were arranged in Dongtai City, Jiangsu Province to sample soils from surface and profile. Concentrations of seven major heavy metals (HMs), granularity, pH, organic matters and C/N of the soil samples were analyzed. Results show that concentrations of heavy metals in agricultural land present a certain spatial variance, decreasing from land to sea. Pollution assessment indicates that the agricultural soils were not polluted by HMs, but the potential pollution of Cu and Hg needs to be alerted. Different HMs accumulate in the surface and sub-surface of the soil profiles, and concentrations of Hg and Pb decrease significantly with the increment of soil depth. Concentrations of HMs exhibit a significantly negative correlation to pH, but have no significant relation with organic matters in soil. Principle component analysis show that the concentrations of HMs relate to the land use history. Concentrations of Hg, Ni and Cr in soil are closely related with land use history, and concentrations of Pb, Cu and Cr are affected by land use history as well as other factors. However, there is no significant relation between concentration of As and land use history. | LIAO Fuqiang ZHOU Shenglu ZHANG Hongfu WU Shaohua ZHAO Qiguo | 2008 | Chinese Geographical Science2008，18，3： | 3 |
| 8 | Review of Researches on Advantages of Intercropping显示文摘Intercropping is a very effective cultivation method in the agricultural production with a long history. The use of intercropping to build a niche complementary crop community can not only enhance the stability of farmland ecosystem and the resistance of crop community to environmental stress but also reduce the damage of diseases, insect pests, environmental pollution and improve the efficiency of resource use to finally achieve high and stable yield of crop community. By collecting the intercropping researches at home and abroad, this thesis describes the impact of intercropping on crop nitrogen fixation and nitrogen transfer, accumulation and distribution of soil nitrate nitrogen, soil microorganism, crop diseases and insect pests, ventilation and light transmission, quality, yield and nutrient absorption, draws a conclusion on intercropping advantages and points out the sections requiring further study in the future. | ZHANG Xiang-qian HUANG Guo-qin BIAN Xin-min JIANG Xue-hai ZHAO Qiguo | 2012 | Asian Agricultural Research2012，4，12： | 2 |
| 9 | Effects of multiple heavy metal contamination and repeated phytoextraction by Sedum plumbizincicola on soil microbial properties显示文摘 | Jinping Jiang Longhua Wu Na Li Yongming Luo Ling Liu Qiguo Zhao Lei Zhang Peter Christie | 2009 | European Journal of Soil Biology2009，，1： | 1 |
| 10 | Response of ^(210)Pb_(ex) inventory to changes in soil erosion rates on uncultivated land显示文摘This analysis studies changes in the variation 210Pbex inventory in soil in response to soil erosion on uncultivated land.A model was created to fit the response of 210 Pb ex inventory to variations in soil erosion rates on uncultivated land using the principle of mass balance.By numerical simulation of the variation in the soil erosion rate in soil of uncultivated land,we prove:(1) past use of what has long been considered the best method of determining 210 Pb ex levels over the past 100 to 200 years is not scientifically accurate;(2) the model shows that variation in 210 Pb ex inventory as a function of time varies according to the index law after variation of soil erosion rates in uncultivated land is considered;and(3) the time needed for the variation in 210 Pb ex inventory to reach a steady-state is affected by changes in the rate of soil erosion and the quality and depth of relaxation in soil of uncultivated land.The results of this research can guide efforts to measure soil erosion rates. | SUN Wei YANG Hao ZHAO QiGuo ZHANG MingLi XU LiangJiang | 2013 | Chinese Science Bulletin2013，58，15： | 1 |
| 11 | Evaluation of spatial and temporal changes of soil quality based on geostatistical analysis in the hill region of subtropical China显示文摘 | Bo Sun Shenglu Zhou Qiguo Zhao | 2003 | Geoderma2003，，1： | 1 |
| 12 | Evaluation of spatial and temporal changes of soil quality based on geostatistical analysis in the hill region of subtropical China显示文摘 | Bo Sun Shenglu Zhou Qiguo Zhao | 2003 | Geoderma2003，115，： | 1 |
| 13 | ^137Cs depth distribution in haplic-udic ferrosols of Southern China and its implication for soil erosion显示文摘 | Xiangyu Tang Hao Yang Qiguo Zhao | 2002 | Soil sci2002，167，： | 1 |
| 14 | Soil redistribution investigation by combined use of soil ^137Cs and selected chemical properties显示文摘 | Xiangyu Tang Hao Yang Mingyuan Du Qiguo Zhao | 2003 | soil Sci Plant Nutri2003，49，4： | 1 |
| 15 | Shear strength of surface soil as affected by soil bulk density and soil water content显示文摘 | ZHANG Bin ZHAO Qiguo HORN R | 2001 | Soil &Tillage Research2001，59，： | 1 |
| 16 | Organic carbon storage in soils of southeast China显示文摘 | Zhao Qiguo Li Zhong Xia Yingfei | 1997 | Nutrient Cycling in Agroecosystems1997，49，1： | 1 |
| 17 | Organic carbon content and distribution in soils under different land uses in tropical and subtropical China显示文摘 | Li Zhong Zhao Qiguo | 2001 | Plant and Soil2001，，2： | 1 |
| 18 | Organic carbon storage in soils of southeast China 显示文摘 | Zhao Qiguo Li Zhong Xia Yingfei | 1997 | Nutrient Cycling in Agroecosystems1997，49，： | 1 |
| 19 | 137Cs DEPTH DISTRIBUTION IN HAPLIC-UDIC FERROSOLS OF SOUTHERN CHINA AND ITS IMPLICATION FOR SOIL EROSION显示文摘 | Xiangyu Tang Hao Yang Qiguo Zhao Renying Li Mingyuan Du | 2002 | Soil Science2002，，2： | 1 |
| 20 | The Present Situation and Development Research of Recreation Ecology显示文摘With the continuous development of society,the problem of the tourism also appears more outstanding.The article analyzed the relationship between ecotourism and recreation ecology on the basis of the understanding and researching,and put recreation ecology forward a deeper level of request.How to develop the tourism,including ecotourism,is the problem to be solved.Five research methods about recreation ecology were introduced,namely the field survey method,the positioning method,the ecological simulation method,the modern information technology method and the tourism evaluation and planning method,from the point of view of research methods to elaborate the present situation of recreation ecology at home and abroad.The relationship of recreation ecology and landscape ecology,landscape architecture,biological statistics and the potential were discussed at the end of the article. | Quan ZHOU Guoqin HUANG Qiguo ZHAO | 2013 | Asian Agricultural Research2013，5，8： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员