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Evaluating the non-use value of sanjiang wetland based on contigent valuation method Assessment of regional soil moisture status based on characteristics of surface temperature/vegetation index space Quantitative Analysis on Reproduction Characters of Puccinellia Chinampoensis Populatioa in Alkalized Meadow in the Songnen Plain of China Vegetative Propagation and Reproductive Growth of Two Ecotypes Leymus chinensis L. in Songnen Plain Changes of China agricultural climate resources under the background of climate change. Ⅳ. Spatiotemporal change characteristics of agricultural climate resources in sub-humid warm-temperate irrigated wheat-maize agricultural area of Huang-Huai-Hai Plain. Soil respiration dynamics and its controlling factors of typical vegetation communities on meadow steppes in the western Songnen Plain. Effect of applying peat to soda salinized soil on soil salinity in north plain of Liaohe River Regional Distribution and Pollution Evaluation of Heavy Metals Pollution in Topsoils of the Chengdu Plain Small-scale point pattern analysis based on different null models for detecting spatial patterns of dominant species in Sanjiang Plain,China Optimized model of agro-animal husbandry for black soil region of Songnen Plain and its implementation effect Soil improvement effect of different management models on low hills in the lower and middle reaches of Yangtze River Species diversity of main communities in South Songnen Plain Expert system design for agroecological patterns of multiple cropping in Lower Reaches of Liaohe PlainⅠ.Design thought of the system Balance of Boron in Farmland Ecosystem in Calcareous Alluvial Soil of Jianghan Plain in Hubei Province Effects of long-term fertilizer management regimes on availability of soil micronutrient elements Analysis on the Mechanism of Seed Dispersal of Puccinellia chinampoensis on Alkalized Meadow in Songnen Plain of China Long-term changes in area and soil total nitrogen and total phosphorus storage in croplands of the densely populated village landscapes of China′s Yangtze Plain The comprehensive analysis and evaluation on the ecological carrying capacity of marsh wetlands in Sanjiang Plain Wetland restoration and reconstruction in Da‘an Paleochannel of Songnen Plain A study on the change of spatial pattern of wetland in the Sanjiang Plain Determining the effects of climate on winter wheat yield in Northern China via yield gap analysis-A case study of Luancheng County, Hebei Province An Early Warning System to Predict Waterlogging Injuries for Winter Wheat in the Yangtze- Huai Plain (WWWS) Ecosystem services of wheat-maize cropland systems in the North China Plain Characteristics and effects of climate warming on winter wheat/summer maize cropping system in recent 50 years in the piedmont of Mount Taihang Nitrogen flux and its manipulation in the cropland ecosystem of the North China Plain Enzymological regulation of soil nutrient cycle in the piedmont region of North China Plain Interactions between evolution of farming systems and environment for agricultural production in the Huang-Huai-Hai Plain during the historic period Operation and demonstration of precision planting in Luancheng County Evaluation of cropland productivity in the Hebei Plain via graded multi-year MODIS-NDVI data Estimation of regional evapotranspiration over the Hebei Plain using geostationary satellite data Path analysis of summer maize agronomic traits and yield in the Huang-Huai-Hai Plain Effect of sowing date on growth and yield of spring-maize Assessment of the yield loss of winter wheat caused by dry-hot wind in Huanghuaihai Plain based on the hazard index of dry-hot wind Groundwater ecological sensitivity assessment in the lower Liaohe River Plain based on GIS technique The starch pasting properties in different nitrogen topdressing treatments under spring and autumn season of waxy maize varieties Effect of CH4 uptake flux under different tillage systems in wheat field in the North China Plain Trends in reference crop evapotranspiration and possible climatic factors in the North China Plain Changes in land use and land cover and soil organic carbon storage in the densely populated village landscapes of China′s Yangtze Plain from the 1940 to 2002 Simulating Soil Water Dynamics and Its Effects on Crop Yield Using RZWQM-CERES in the North China Plain Effect of Fertilization on Yield of Forage Grass，Nutrient Uptake and Soil Properties under Sudangrass and Ryegrass Rotation Regime Water Utilization and Matter Production in Winter Wheat under Soil-Coated Ultrathin Plastic-Film Mulching and Irrigation Management  A MODEL TO SIMULATE NET PRIMARY PRODUCTION OF DEYEUXIA ANGUSTIFOLIAIN WETLANDS IN SANJIANG PLAIN, CHINA EMISSIONS OF CH4 AND N2O FROM A WETLAND IN THE SANJIANG PLAIN Variation of ozone concentration of winter wheat field and mechanistic analysis of its possible effect on wheat yield in Northwest-Shandong Plain of China Changes of the dike-pond agricultural pattern and water hyacinth invasion in southern China Effect of long-term shallow tillage and straw returning on soil potassium content and stratification ratio in winter wheat/summer maize rotation system in Guanzhong Plain, Northwest China. Nitrogen input altered testate amoebae community in peatland of Sanjiang Plain, Northeast China. Influences of rural households‘ income differences on living energy consumption and eco-environment: a case study of Jianghan Plain, China Effect of grazing intensity on ecological stoichiometry of Deyeuxia angustifolia and meadow soil Study on Regeneration Age of Farm poplar Shelter Belt in Huanghe Flooding Plain A STUDY ON WATERSALT MOVEMENT OF SOLONCHAK IN HETAO PLAIN, INNER MONGOLIA Potential grain output and technology approaches in the plain around the Bohai Sea in Shandong Province Spatial and temporal variations in optimum sowing date of winter wheat in Shijiazhuang City Structural attribute and optimization of farmland and non-cropped green-land patches of agricultural landscape: A case study of Fengqiu County, Henan Province Pollution evaluation of the heavy metal elements on the eco-environment of the Sanjiang Plain based on GIS Late-Glacial and Postglacial Vegetation and Associated Environment in Jianghan Plain A Discussion on the Eco-agricultural Ways for Comprehensive Agricultural Development in Huanghuaihai Plain Preliminary study on the appropriate cultivating season of high-quality rice formation in Jianghan Plain Characteristics of radiation and heat processes over wheat field in North China Plain Preliminary study on magnetic susceptibility of saline soil Technologies of saline alkali soil amelioration in Huanghe-Huaihe-Haihe Plain-A case study on Pingyuan Experimental Plot in Northwest Shandong The basic scientific problem of wetland agriculture in the Sanjiang Plain Simulation study on the extinction coefficient of winter wheat in Huang-Huai-Hai Plain of China Impact of land use and land cover change on the vegetation carbon storage in Sanjiang Plain Dynamic processes of two-way succession of natural and man-made wetlands in Sanjiang Plain STUDY ON THE ECOLOGICAL CHARACTERISTICS OF WATERLOGGING FIELD IN JIANGHAN PLAIN Lake nutrient ecosystems in the east-central moist subtropical plain of China Nitrogen loss and use efficiency of one-time basal application of cattle manure in autumn to a winter wheat–summer maize cropping system on the North China Plain ON THE RELATIONSHIP BETWEEN THE LAW OF GROWTH OF POPULUS TOMENTOSA CARR.AND THE SOIL CONDITION OF FOREST LAND IN THE PLAIN OF WESTERN SHANDONG PROVINCE THE STUDY ON THE SITE CLASSIFICATION AND ITS EVALUATION AT FOREST LAND IN THE PLAIN FORMERLY FIOODED BY THE HUANGHE RIVER STUDY ON STRASTEGIC OBJECTIVE OF FORESTRY DEVELOPMENT IN HUANG-HUAI-HAI PLAIN WITHIN SHANDONG PROVINCE