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| 1 | Spatial and Temporal Variability of N, P and K Balances for Agroecosystems in China显示文摘Nitrogen, phosphorus, and potassium balances for agroecosystems in China from 1993 to 2001 were calculated at national and provincial levels using statistical data and related parameters, and their spatial and temporal variabilities were analyzed with GIS to estimate the potential impacts of nutrient N, P and K surpluses or deficits to soil, water and air. At the national scale, the N and P balances from 1993 to 2001 showed a surplus, with the nitrogen surplus remaining relatively stable from 1997—2001. Although during this period the P surplus pattern was similar to N, it had smaller values and kept increasing as the use of phosphate fertilizer increased year by year. However, K was deficient from 1993 to 2001 even though from 1999 to 2001 the K deficit decreased. The spatial analysis revealed higher N surpluses in the more developed southeastern provinces and lowest in the western and northern provinces where there was less chemical fertilizer input. The serious K deficit mainly occurred in Shanghai and Beijing municipalities, Jiangsu, Zhejiang and Hubei provinces, and Xinjiang autonomous regions. For the years 1992, 1996 and 2001, N surpluses and K deficits had significant positive spatial correlations with per capita gross domestic product (GDP), per capita gross industrial output value, and per capita net income of rural households. This showed that the level of economic development played an important role on nutrient balances in the agroecosystems. | SHENRun-Ping SUNBo ZHAOQi-Guo | 2005 | Pedosphere2005,15,3: | 52 |
| 2 | Temporal-Spatial Variability of Soil Organic Carbon Stocks in a Rehabilitating Ecosystem显示文摘In global change research, changes of soil organic carbon (SOC) reservoirs in tropical and subtropical regions are still unknown. The temporal-spatial variability of SOC stocks was determined in a basin of over 579 km2 in subtropical China from 1981 to 2002. ArcGIS8.1 software was utilized for spatial analysis of semivariance, ordinary kriging (OK),and probability kriging (PK). Grid and hierarchical approaches were employed for the sampling scenario in 2002 with 106Global Position System (GPS) established spots sampled. Bulk topsoil samples (0-30 cm) were collected at three random sites on each spot. The SOC content for 1981 came from the SOC map of the Second National Soil Survey. Geostatistical results of the nugget to sill ratio (0.215-0.640) in the rehabilitating ecosystem indicated a moderate spatial dependence for SOC on this large scale. The range of SOC changed from 2.04 km in 1981 to 7.15 km in 2002. The mean topsoil SOC increased by 4.6% from 10.63 g kg-1 (1981) to 11.12 g kg-1 (2002). However, during this 21-year period 25.2%of the total basin area experienced a decrease in SOC. Also, the probability kriging results showed that the geometric mean probabilities of SOC ≤ 6.0 g kg-1, ≤ 11.0 g kg-1 and > 15.0 g kg-1 were 0.188, 0.534 and 0.378, respectively in 2002, comparing to 0.234, 0.416 and 0.234 in that order in 1981, respectively. The SOC storage in the topsoil increased by 17.0% during this time with the main increase occurring in forests and cultivated land, which amounted to 82.5% and 17.0% of the total increase, respectively. | ZHANGShi-Rong SUNBo ZHAOQi-Guo XIAOPeng-Fei SHUJian-Ying | 2004 | Pedosphere2004,14,4: | 43 |
| 3 | A New Fusion Technique of Remote Sensing Images for Land Use/Cover显示文摘In China,accelerating industrialization and urbanization following high-speed economic development and population increases have greatly impacted land use/cover changes,making it imperative to obtain accurate and up to date information on changes so as to evaluate their environmental effects. The major purpose of this study was to develop a new method to fuse lower spatial resolution multispectral satellite images with higher spatial resolution panchromatic ones to assist in land use/cover mapping. An algorithm of a new fusion method known as edge enhancement intensity modulation (EEIM) was proposed to merge two optical image data sets of different spectral ranges. The results showed that the EEIM image was quite similar in color to lower resolution multispectral images,and the fused product was better able to preserve spectral information. Thus,compared to conventional approaches,the spectral distortion of the fused images was markedly reduced. Therefore,the EEIM fusion method could be utilized to fuse remote sensing data from the same or different sensors,including TM images and SPOT5 panchromatic images,providing high quality land use/cover images. | WULian-Xi SUNBo ZHOUSheng-Lu HUANGShu-E ZHAOQi-Guo | 2004 | Pedosphere2004,14,2: | 24 |
| 4 | Soil Organic Carbon Storage in China显示文摘Soil organic carbon (SOC) storage under different types of vegetations in China were estimated using measured data of 2 440 soil profiles to compare SOC density distribution between different estimates, to map the soil organic carbon stocks under different types of vegetation in China, and to analyze the relationships between soil organic carbon stocks and environmental variables using stepwise regression analyses. Soil organic carbon storage in China was estimated at 69.38 Gt (10 15 g). There was a big difference in SOC densities for various vegetation types, with SOC distribution closely related to climatic patterns in general. Stepwise regression analyses of SOC against environmental variables showed that SOC generally increased with increasing precipitation and elevation, while it decreased with increasing temperature.Furthermore, the important factor controlling SOC accumulation for forests was elevation, while for temperate steppes mean annual temperature dominated. The more specific the vegetation type used in the regression analysis, the greater was the effect of environmental variables on SOC. However, compared to native vegetation, cultivation activities in the croplands reduced the influence of environmental variables on SOC. | XIEXian-Li SUNBo ZHOUHui-Zhen LIAn-Bo | 2004 | Pedosphere2004,14,4: | 15 |
| 5 | Effects of Soil Texture and CaCO_3 on Turnover of Organic Material in Chao Soils显示文摘Decomposition experiments of ^14C-labelled sickle alfalfa in chao soils of different texture and these soils after removal of CaCO3 were carried out under field and laboratory conditions respectively.The amount of residual ^14C in,or ^14CO2 evolved from,the soils at intervals after the beginning of devomposition were measured and the distribution of native and labelled C between particle size fractions isolated from these soils was edtermined.Results showed that contents of both labelled (^14C) and non-labelled (^12C) carbon decreased with increasing particle size.The enrichment factor for ^14C was higher than that for ^12C in the clay fraction,the reverse being true for the silt enrichment factors.The effect of soil texture on the decomposition of plant material could not be observed in chao soils when the clay content was lower than 270g kg^-1,while it became obvious once CaCO3 was removed was correlated from these soils.The decomposition rate of plant material in the soil from which the native CaCO3 Was removed was correlated significantly to both the clay content of the soil and the application rate of CaCO3.A preliminary correction equation describing the effect of clay and CaCO3 on the decomposition of organic material in chao soil was derived from the results obtained. | SUNBO LINXIN-XIONG | 1993 | Pedosphere1993,3,2: | 10 |
| 6 | Fertility Restoration of Red Soils in Low-Hilly Region of Middle Subtropical China显示文摘Inrecentdecades,concernhasgrownaboutthesoilquality/healthwiththeenlargingcontradictoryamonggrowingpopulation,naturalresourcesandenvironment.SoutheastChinaischaracterizedbyamarkedlymonsoonclimate,withameanannualtemperatureof14-22oCandameanannualprecip... | SUNBO ZHANGTAOLIN 等 | 1999 | Pedosphere1999,9,3: | 3 |
| 7 | An Approach to Enforcing Clark-Wilson Model in Role-based Access Control Model显示文摘Using one security model to enforce another is a prospective solution to multi-policy support. In this paper, an approach to the enforcing Clark-Wilson data integrity model in the Role-based access control (RBAC) model is proposed. An enforcement construction with great feasibility is presented. In this construction, a direct way to enforce the Clark-Wilson model is provided, the corresponding relations among users, transformation procedures, and constrained data items are strengthened; the concepts of task and subtask are introduced to enhance the support to least-privilege. The proposed approach widens the applicability of RBAC. The theoretical foundation for adopting Clark-Wilson model in a RBAC system with small cost is offered to meet the requirements of multi-policy support and policy flexibility. | LIANGBin SHIWenchang SUNYufang SUNBo | 2004 | Chinese Journal of Electronics2004,13,4: | 2 |
| 8 | Fate of Urea Applied to Peanut (Arachis hypogaea L.) on a Sloping Udic Ferrosol in Subtropical China显示文摘A field experiment was conducted to study the outcome of N using isotope-labeled urea with a peanut cropping system in a Udic Ferrosol on a 7% slope at the Ecological Experimental Station of Red Soil, Chinese Academy of Sciences. The micro-plots were designed in two sets with three replicates and four N treatments. An iron frame with its edge 10 cm above the ground was used to control soil erosion and runoff in set A, but in set B the upper edge of the frame was level with the ground. Randomly positioned 15N fertilized micro-plots were established along the contour. At harvest on August 13, 2002, which was four months after urea application, the peanuts had absorbed 30.6%-38.0% of the urea, transpired 13.1%-22.4% to the atmosphere, lost 6.4%-8.4% through soil erosion and surface runoff, and maintained 40.7%-48.9% in the 0-60 cm soil layer with 0.5%-5.0% below 60 cm. | WANGXing-Xiang SUNBo ZHANGTao-Lin HEYuan-Qiu | 2005 | Pedosphere2005,15,2: | 2 |
| 9 | Soil quality and sustainable environment[J]显示文摘 | SUNBo(孙波) ZHAOQiguo(赵其国) ZHANGTaolin(张桃林) etal | 1997 | 土壤通报1997,5,: | 1 |
| 10 | Effects of inhaled nitric oxide on de novo synthesis of phosphatidylcholine in adult rat lungs with endotoxin-induced inflammatory injury显示文摘BACKGROUND: Though inhaled nitric oxide (iNO) improved oxygenation but had no effect on mortality in randomized clinical trial for acute respiratory distress syndrome (ARDS), its efficacy in modulation of inflammation and antioxidant capability in airway and alveolar epithelial cells in mature lungs remains to be verified. | GONGXiao-Hui HUXiao-Wei SUNBo | 2003 | Acta Pharmacologica Sinica2003,24,12: | 1 |
| 11 | Modulation of lung inflammation by surfactant and nitric oxide in E coli-induced septic acute lung injury in piglets显示文摘BACKGROUND: Septic lung injury results in intractable respiratory failure and surfactant and nitric oxide (NO) may protect the lungs from injury by suppression of inflammatory process. AIM: To establish a piglet model of acute lung injury (ALl) induced by Escherichia coli peritonitis and investigates | ZHUYou-Rong QIANLi-Ling GUOChun-Bao GONGXiao-Hui SUNBo | 2003 | Acta Pharmacologica Sinica2003,24,12: | 1 |
| 12 | Inhaled nitric oxide attenuates hyperoxic lung injury in adult rats显示文摘BACKGROUND: Hyperoxic lung injury is commonly encountered in the treatment of premature neonates with respiratory distress, and impairment of and deficiency in antioxidant system in airway and alveolar epithelial cells may cause chronic lung disease (CLD). This problem may also be found in infants and children | HUXiao-Wei ZHULie-Wei SUNBo | 2003 | Acta Pharmacologica Sinica2003,24,12: | 1 |
| 13 | ResearchofpreparaGtionofultrafinecopperpowderusingformaldehydeasreGductiveagent显示文摘 | LiaoRong SunBo TanHongbin | 2003 | JournalofChengduUniversityofTechGnology(Science & TechnologyEdtion)2003,30,4: | 1 |
| 14 | Alleviation of Subsoil Acidity of Red Soil in Southeast China with Lime and Gypsum显示文摘nrecentdecades,concernhasbeengrowingaboutreductionofacidityinsubsoil.DuetotoxiclevelofAland/ordeficientamountofCaintheacidsub... | SUNBO R.MOREAU 等 | 1998 | Pedosphere1998,8,2: | 1 |
| 15 | StudiesonthephasedigramforthequinarysystemLi+、K+、Na+、Mg2+//SO-H20at25C[J]显示文摘 | LiBing(李冰) SunBo(孙柏) FangChunhui(房春晖) DuXianhui(杜宪惠) SongPengsheng(宋彭生) | | 化学学报0,,: | 1 |
| 16 | Incidence, prevalence and outcome of adult respiratory distress syndrome: A 12-month prospective multicenter survey in Shanghai显示文摘A prospective 12-month survey of incidence, risk factors and outcome of acute respiratory distress syndrome (ARDS) was conducted in 15 intensive care units(ICU) in Shanghai during 2001-2002. Of 5320 adult patients admitted to ICUs, there were 108 (2 %) with ARDS diagnosed according to the 1994 American-Eu- | LUYue-Ming SONGZhi-Fang ZHOUXin HUANGShao-Guang ZHUDu-Ming YANGXing-Yi BAIChunXue SUNBo RogerSPRAGG | 2003 | Acta Pharmacologica Sinica2003,24,12: | 0 |