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Application Research of Forest Vegetation Simulator to Plantation of Beijing Region
In this paper, American Forest Vegetation Simulator was well known, and the function、parts、 frame of models、 flow of operation and input data and output data of FVS were mastered, and base on what we had understood for FVS, explore sec....
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Study on Related Criterions of Construction of Forest Resource Management Information System
Informationization and digitization has become the important components of modern science and technology research. For implementing the strategy of Leap-firogged development and sustainable development of forestry, it is necessary for depart....
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Model Construction among Light, Thermal, Water Factors and the Preliminary Applications Based on View
Research on spatial distribution regularies of solar radiation and hydro-thermal factors and the method of land suitability were conducted, which were based on the solar radiation model of ViewGIS and associated with the key project supporte....
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Dynamic Effects of Forest Vegetation on Hill-slop Water Erosion in Loess Area
Because of irrational utilization of natural resources human is destroying the forest vegetation and thus leading to serious erosion. the loess plateau is one of serious water erosion areas. As the most important ecological system on the ear....
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Multi-Scale Distributed Surface Runoff Simulation System of Nested Watershed in Loess Areas
Distributed hydrological model becomes a focus of ecology hydrological research because it provides insights to solve the problems of multi-scale evaluation and upscaling of hydrological benefits of forest. However distributed hydrological m....
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Mechanism of Water Resources Conservation and Recharge of Forest and Its Ecological Function Value Ev
Jinyun Mountain, lying in tail end of Three Gorge reservoir area, is a spontaneousness laboratory to study systemly water resources conservation and recharge function of forest because it has integrated coenotype of subtropical broad leaved....
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Analysis on Benefit and Loss of Soil and Water Conservation for Construction Projects
Currently our country is being in the crucial time, which is a historical stage that the average GDP per person develops from 1,000 US dollars of low income countries to 3,000 US dollars of medium income countries. The international experien....
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Nitrogen Recycling in Rice-wheat Rotation Farm System and Water Environment Effect
Nitrogen is the important growth source of biological living on earth. Human being study and utilizes nitrogen from biosphere development and satisfaction of food needs all the while. With the increase of fertilization, nutrient matter loss....
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Studies on Ecology of Tree Sparrow with Reference to the Residue of Organochlorine Pesticides in Spar
With the fast economic development of our country, great changes have taken place in many agricultural districts and the planting and feeding industries. With the transition from traditional agriculture to the modern intensive agriculture, t....
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Study on Environmental Behavior and Bioeffects of Bt Transgenic Rice and Expressed Products of Its Ex
Great progress has been made on insect-resistant transgenic plants breeding home and abroad. China might become one of the countries to approve the commercialized planting of genetically modified rice, especially Bt transgenic rice. Therefor....
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Study on Dynamics Properties of Combine Soil Preparing Implement Based on the Virtual Technology
Saving energy and constructing friendly environment become main guidelines for many works in China nowaday and in the future. It was found from field survey that the non-matching phenomena between the mini- or medium-sized combines and power....
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Morphological and Molecular Identification of Major Xiphinema Species Occuring in China
Dagger nematodes ( Xiphinema spp.) are a group of ectoparasitic nematodes that cause damage to an extensive range of crops by their feeding on plant root cells and the important is that some of which are virus vectors and can transmit viruse....
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The Diversity and Pathogenicity of Burkholderia Cepacia Complex Strains in the Rhizospheres of Main C
Burkholderia cepacia is a gram-negative bacterium commonly found in soil, Water, plant rhizosphere, patients and hospital environment. It was first described as a phytobacterium. Subsequently, it emerged as an opportunistic human pathogen in....
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Balance Mechanisms between Constitutive and Inducible Defenses to Specialist Herbivores in Plants
Investigations of the relationships between constitutive and inducible resistances to herbivores in plants may provide insight into the evolution of the plant-insect relationships as well as valuable background knowledge for breeding of crop....
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Study on Interaction between Beet Armyworm, Spodoptera Exigua (H.) and Chenopodiaceous Plants
The beet armyworm, Spodoptera exigua (Hübner), a key agricultural pest around the world, is highly resistant to most insecticides and has been causing serious infestations due to its wide range of hosts. Studies on the interactions between....
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The Interactions between the Whitefly, Bemisia Tabaci, Two Begomoviruses (TYLCCNV and TbCSV) and Thei
(1) The B biotype of the whitefly, Bemisia tabaci (Gennadius), has invaded many countries and regions of the world in the last 20 years, and has been one of the most important crop pests worldwide. This insect has caused extensive crop damag....
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Sequence Analysis of Genomes from Three Nucleopolyhedroviruses
The Ectropis oblique nucleopolyhedrovirus (EcobNPV), Euproctis pseudoconspersa nucleopolyhedrovirus (EupsNPV) and Helicoverpa armigera nucleocapsid nucleopolyhedrovirus (HearNPV) are pathogenic to Ectropis oblique, Euproctis pseudoconspersa....
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Industrial Technique for Pesticide Rapid Test ELISA Kit
Two optimized haptens of insecticide triazophos, i.e. O-ethyl, O-(1-phenyl-1H-1,2,4-triazol-3- y1) N-(3-carboxypropyl) phosphoramidothioate (THBu) and [O-ethyl, O-(l-phenyl-1H-1,2,4-triazol-3-yl) N-(5-carboxyamyl) phosphoramidothioate (THHe)....
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Characteristics, Soil Ecological Effects, and Their Minimization of Chlorpyrifos Residues in Greenhou
Greenhouse production of vegetables has been developed rapidly in China during the past decades. Compared to field conditions, greenhouse provides more favorable climate for fast reproduction of pests and diseases that result in extensive an....
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The Study of Determination and the Calibration Model Optimization by Near Infrared Reflectance Spectr
Rice (Oryza sativa L.) is one of the most important food crops in the world, and its mineral nutrients in rice, such as Fe, Zn, Se, Ca, etc, have key roles to health of consumer. Thus, it is a key method for improving human's mineral nutriti....
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QTL Mapping for Cooking and Nutrient Quality Traits of Rice (Oryza Sativa L.)
Grain quality improvement is a very important area of rice breeding. In this study, the backcross recombinant inbred line population derived from Nipponbare (japonica)/ Kasalath (indica)//Nipponbare and its genetic linkage map were used to m....
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Studies on Water Use Efficiency and Adaptability of Black Locust Clones
In this paper, they were studied the dynamic variation of the water consumption, water consumption rate (WCR), air exchange, Water Use Efficiency (WUE), δ~(13)C .Isotope discrimination(△) as well as the relation between δ~(13)C and the I....
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Energy and Water Budget of a Poplar Plantation in Suburban Beijing
Eddy-Covariance (EC) open path system, Sap flow method, soil water balance method and microclimate monitor system were employed in this study to investigate energy balance and water budget at the different spatial and temporal scales in grow....
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A Study on the Status of Asiatic Wild Ass (Equus Hemionus Hemionus) and Its Ecological Problems
An investigation on the Equus hemionus hemionus within China territory was conducted along the sample line by meanings of jeep driving, motor cycling, horse riding and walking after the animal to study its distribution, species size, and pre....
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Toxicity of Ambient Nitrite and Ammonia on Eriocheir Sinensis Juveniles and Nutritional Modulation of
In this paper, the toxicity of ambient nitrite and ammonia on Eriocheir sinensis juveniles was studied and the detoxification mechanism of nitrite and ammonia by E. sinensis jueveniles was elucidated. Besides, the effect of dietary vitamin E....
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Study on the Measuring Technology of Environmental Efficiency of Variable-rate Fertilization
In the work, the ecology benefit of the Variable-rate Fertilization (VRF) in precise agriculture were mainly analyzed and evaluated. Systematically analysis was made. And the work introduced the inevitability of the chemical fertilization in....
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The Research of Soil Animal Community with Different Land Uses in Urban Ecosystem
One character of urban ecosystem is the change of land use and it lead to the change of environment. Soil animal is an important constituent in urban ecosystem and play an important role in substance cycling and energy flowing. Soil animal c....
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The Study of Soil Erosion from Sloping Farmland in Three Gorges Reservoir Area
Soil erosion in slope cultivated lands is the main source of sediment in Three Gorges Reservoir area, in order to study the mechanism of soil loss in Three Gorges Reservoir area. This paper on the base of the research on climatic factors, ta....
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Research on Heterogeneity of Runoff and Hydrodynamics Process Simulation of Nesting Watershed in Loes
Relation runoff and sediment of the Loess Plateau is the focal problem in scientific community. Relying on project of "regulating of transition and differentiating of agricultural water and soil resource and eco-environment adjusted and cont....
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Function and Value of Soil & Water Conservation Ecological Services
In this study, soil and water conservation, ecology, ecological economics theory as a guide, soil and water conservation function of ecological services division base on comprehensive analysis of China's soil erosion and soil and water conse....