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基于Model Builder的库区生态敏感性分析
生态敏感性 Model Builder 分析 密云库区
2009/11/4
以密云库区为研究对象，利用生态环境现状调查资料和相关研究成果，通过生态服务价值、地质灾害、植被覆盖指数、坡度及土地覆被类型5个指标对密云库区生态环境敏感性进行了综合评价，识别出主要生态敏感区域。结果表明：生态服务价值变化对生态环境最为敏感，地质灾害因子次之；生态敏感性极高的区域主要为石城镇大部分地区、高岭镇西北部及北庄东南部和西南地区，不敏感区包括十里堡、巨各庄、大城子中部等地区。
USING RESIDUAL ANALYSIS TO VALIDATE RICE SOWING DATES EXPERIMENT MODEL
Sowing dates rice statistical model residual analysis
2010/3/26
Picking a model for a problem is a major undertaking. If the model fits well then it can be used to increase understanding of the problem and/or for prediction. Several statistical procedures have bee...
SIMULATIONS OF THEORETICAL ECOSYSTEM GROWTH MODEL (TEGM) DURING VARIOUS CLIMATE CONDITIONS
climate modelling ecosystem climate change theoretical ecological model
2010/3/26
Climate change has a great impact on the build and the work of natural ecosystems. Disappearance of some population or growth of the number in some species can be already caused by little change in te...
Increasing Trend in Net Carbon Fixation by Indian Agro-Ecosystem Estimated Using NOAA — AVHRR Based Glopem Model
Remote Sensing Net Primary Productivity Agro-ecosystem Carbon Fixation
2016/4/8
The monitoring of terrestrial carbon dynamics is important in studies related with global climate change. This paper reports the interannual variability of Net Primary Productivity (NPP) from 1981-200...
THE EFFECT OF CLIMATE CHANGE ON THE POPULATION OF SYCAMORE LACE BUG (CORYTHUCA CILIATA, SAY,TINGIDAE HETEROPTERA) BASED ON A SIMULATION MODEL WITH PHENOLOGICAL RESPONSE
climate change insects pest management simulation agriculture
2010/3/24
Climate change affects on insect populations in many ways: it can cause a shift in geographical spread, abundance, or diversity, it can change the location, the timing and the magnitude of outbreaks o...
APPLICABILITY OF THE AFRCWHEAT2 WHEAT GROWTH SIMULATION MODEL IN HUNGARY
winter wheat modelling calibration elevated CO2 concentration
2010/3/24
The aim of the present work was to determine the applicability of the AFRCWHEAT2 wheat
growth model under Hungarian conditions. The Farquhar model, which, when properly calibrated, gives a satisfacto...
DETERMINATION OF THE PHOSPHATE CONTENT ORIGINALLY ADSORBED ON THE SOIL BY FITTING AN ADSORPTION ISOTHERM MODEL
soil phosphate adsorption model
2010/3/24
In order to replace the rather complicated physico-chemical method, a mathematical technique
related to the binding of phosphate ions was elaborated to determine the labile, and thus plant-available ...
SENSITIVITY OF 4M MAIZE MODEL TO THE INACCURACY OF WEATHER AND SOIL INPUT DATA
crop modelling error of measurement uncertainty of simulation
2010/3/23
The accuracy of a crop model is judged mostly by how precise it is in estimating the production. The preciseness of a crop model is determined on one hand by the authenticity of the algorithms describ...
AN AGRO-ECOLOGICAL SIMULATION MODEL SYSTEM
food web population dynamical model activity function spatio-temporal simulation model multivariate state-planes
2010/3/23
In this paper five different models, as five modules of a complex agro-ecosystem are investigated. The water and nutrient flow in soil is simulated by the nutrient-in-soil model while the biomass chan...