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| 1 | Spatial-Temporal Pattern and Driving Forces of Land Use Changes in Xiamen显示文摘Using Landsat TM data of 1988, 1998 and 2001, the dynamic process of the spatial-temporal characteristics of land use changes during 13 years from 1988 to 2001 in the special economic zone of Xiamen, China was analyzed to improve understanding and to find the driving forces of land use change so that sustainable land utilization could be practiced. During the 13 years cropland decreased remarkably by nearly 11304.95 ha. The areas of rural-urban construction and water body increased by 10 152.24 ha and 848.94 ha, respectively. From 1988 to 2001, 52.5% of the lost cropland was converted into rural-urban industrial land. Rapid urbanization contributed to a great change in the rate of cropland land use during these years. Land-reclamation also contributed to a decrease in water body area as well as marine ecological and environmental destruction. In the study area 1) urbanization and industrialization, 2) infrastructure and agricultural intensification, 3) increased affluence of the farming community, and 4) policy factors have driven the land use changes. Possible sustainable land use measures included construction of a land management system, land planning, development of potential land resources, new technology applications, and marine ecological and environmental protection. | QUAN Bin CHEN Jian-Fei QIU Hong-Lie M. J. M. ROMKENS YANG Xiao-Qi JIANG Shi-Feng LI Bi-Cheng | 2006 | Pedosphere2006，16，4： | 40 |
| 2 | Land Suitability Assessment and Land Use Change in Fujian Province,China显示文摘To present the current status of land quality and distribution and the trends in land use change, the physical suitability of cropland and forestland and the associated changes in Fujian Province were evaluated and analyzed using data obtained from geographical information systems (GIS) and remote sensing (RS).Of the total land area of Fujian Province,first class suitable cropland accounted for only 4.21%, whereas unsuitable cropland accounted for 84.78%. The percentage of first class suitable cropland in the southeastern region (5.32%) was much higher than that in the northwestern area (2.91%).Only 13.63% of the existing cropland area consisted of first class cropland and 70.08% was classified as unsuitable for cultivation.Of the total land area of Fujian Province,the first class forestland comprised 55.25% and the unsuitable forestland (including third class) comprised 21.2%.The percentage of unsuitable forest area in the existing forestland was only 5.5%.From 1996 to 2001, cropland and unused land decreased significantly, whereas forestland and land used for urban and transport increased rapidly.Therefore,the major tasks ahead will be the land development for full grain production potential,the better coordination of allocating land to different uses, and the regulation inappropriate activities that damage agricultural ecosystems. | QUAN Bin ZHU He-Jian CHEN Song-Lin M. J. M. ROMKENS LI Bi-Cheng | 2007 | Pedosphere2007，17，4： | 20 |
| 3 | Spatial-temporal Pattern and Population Driving Force of Land Use Change in Liupan Mountains Region, Southern Ningxia, China显示文摘The Liupan Mountains is located in the southern Ningxia Hui Autonomous Region of China, which forms an important dividing line between landforms and bio-geographic regions. The populated part of the Liupan Mountains region has suffered tremendous ecological damages over time due to population pressure, excessive demand and inappropriate use of agricultural land resources. In this paper, datasets of land use between 1990 and 2000 were obtained from Landsat TM imagery, and then spatial models were used to characterize landscape conditions. Also, the relationship between the population density and land use/cover change (LUCC) was analyzed. Results indicate that cropland, forestland, and urban areas have increased by 44,186ha, 9001ha and 1550ha, respectively while the grassland area has appreciably decreased by 54,025ha in the study period. The decrease in grassland was most notable. Of the grassland lost, 49.4% was converted into cropland. The largest annual land conversion rate in the study area was less than 2%. These changes are attributed to industrial and agricultural development and population growth. To improve the eco-economic conditions in the study region, population control, urbanization and development of an ecological friendly agriculture were suggested. | QUAN Bin M J M ROMKENS TAO Jianjun LI Bicheng LI Chaokui YU Guanghui CHEN Qichun | 2008 | Chinese Geographical Science2008，18，4： | 15 |
| 4 | OPTIMAL MODE OF SEDIMENT TRANSPORT BY SHALLOW FLOWS IN UPLAND AREAS显示文摘Soil erosion and sediment movement are serious problems of upland areas of a watershed. In these areas,most of the eroded sediment is transported in overland flows; either in shallow or in concentrated flowsituations. These flows are usually associated with nonlinear waves, generally known as 'roll waves' inthe hydraulic engineering literature. Under suitable hydraulic conditions, these waves contain a significantfraction of the total kinetic energy of the flow regime. Hence, the waves act as the primary energy sourcein transporting eroded sediment in shallow flows on steep slopes. Our laborat0ry experiments undercontrolled condition suggest that modulation of the roll waves is effected by the addition of increasingamouflts of sediment in the flow. The optimal condition in the sediment transport rate is reached whenmost of the available wave energy is consumed in carrying the sediment. A related set of experiments ongravitational flows of dry granular material show that the evolving scales of sediment waves are intrinsicto the transport mechanism of the solid phase. | D. PAL S. N. PRASAD (Department of Civil Engineering, University of Mississippi, University, MS 38677, USA.) M. J. M. ROMKENS(USDA ARS National Sedimentation Laboratory, Oxford, MS 38655, USA.) | 2000 | International Journal of Sediment Research2000，15，2： | 3 |
| 5 | Spa*iotcmporal urban land use changes in the Changzhutan region of hu nan province in China显示文摘 | Quan B Xiao Z K ROmkens M J | 2013 | Journal of Geographical Infor marion Systerm2013，5，2： | 1 |
| 6 | Effect of Ca on the solubility and molecular size distribution of DOC and Cu binding in soil solution samples显示文摘 | Romkens Paul F A M Jan Dolfing | 1998 | Environ Sci Technol1998，32，： | 1 |
| 7 | Identification and characteristics of phosphorus-rich sandy soils显示文摘 | Koopmans G F van der Zeeuw M E Romkens P F A M | 2001 | Neth J Agri Sci2001，49，： | 1 |
| 8 | Soil organic matter dynamics after the conversion of arable land to pasture显示文摘 | Romkens P Plicht J Hassink J | | 0，，： | 1 |
| 9 | Tillage and row position effects on water and solute infiltration charactersties显示文摘 | Vervoort R W Dabney S M Romkens M J M | 2001 | Soil Science Society America Journal2001，65，： | 1 |
| 10 | Potentials and drawbacks of chelate-enhanced phytoremediation of soils 显示文摘 | ROMKENS P BOUWMAN L JAPENGA J DRAAISMA C | 2002 | Environmental Pollution2002，116，： | 1 |
| 11 | Effect of plant growth on copper solubility and speciation in soil solution samples显示文摘 | Bouwman L A Boon G T | 1999 | Environmental Pollution1999，106，： | 1 |
| 12 | Soil erosion modes of sealing soils:a phenomenological study显示文摘 | Romkens M J M Prasad S N Gerits J J P | 1997 | Soil Technology1997，11，： | 1 |
| 13 | Iron ox- ides erodibility interaction for soils of the Memphis Gatena显示文摘 | Rhoton F E Lindbo D L Romkens M J M | 1998 | Soil Sci Soc Am J1998，62，： | 1 |
| 14 | Phosphorus relationships in runoff from fertilized soils显示文摘 | Romkens M J Nelson D W | 1974 | Journal of Environmental Quality1974，3，： | 1 |
| 15 | Tillage and row position effects on water and solute infiltration charaeteristies显示文摘 | Vervoort R W Dabney S M Romkens M J M | 2001 | Soil Science Society America Journal2001，65，： | 1 |
| 16 | Potentials and drawbacks of chelate-enhanced phytoremediation of soils显示文摘 | Romkens Paul Bouwnmn Lucas Japenga Jan | 2002 | Environmental Pollution2002，116，1： | 1 |
| 17 | Experimental studies of factors in determining sediment trapping in vegetative filter strips显示文摘 | JIN C X RoMKENS M J M | 2001 | Transactions of the ASAE2001，44，2： | 1 |
| 18 | Soil roughness changes from rainfall 显示文摘 | Romkens M J M Wang J Y | 1987 | Transactions of the ASAE1987，30，1： | 1 |
| 19 | Surface roughness related processes of runoff and soil loss: a flume study 显示文摘 | Hehning K Romkens M J M Prasad S N | 1998 | Soil Science Society of America Jour- nal1998，62，1： | 1 |
| 20 | The role of soil surface water regimes and raindrop impact on hillslope soil erosion and nutrient losses 显示文摘 | An Juan Zheng Fenli Romkens Mathias J M | 2013 | Natural Hazards2013，67，2： | 1 |
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