农田生态系统

以湖北省咸宁市贺胜桥镇上孟村农田生态系统为研究对象，分析了当地油/豆稻、麦/瓜稻、油/玉米大豆、小麦芝麻、大豆芝麻等5种种植方式的B素平衡。

Five sequential cropping systems including rape / soybean rice , wheat / watermelon rice , rape / corn soybean , wheat sesame and soybean sesame , were selected study the boron balance in agroecosystem on brown red soil of south Hubei Province .

氮磷肥对黑土玉米农田生态系统土壤微生物量碳、氮的影响

Effect of Fertilizing N and P on Soil Microbial Biomass Carbon and Nitrogen of Black Soil Corn Agroecosystem

鄂南棕红壤农田生态系统B素平衡分析

Boron balance in agroecosystem on brown red soil of south Hubei Province

农田生态系统N、P营养平衡及其肥料效应

N and P balances in farmland ecosystem and their response to fertilizers

而科学管理作物残余物是增强农田生态系统C蓄积能力的关键。

Thus , the crop residue management is the key issue for enhancing carbon sequestration .

江汉平原农田生态系统B素循环及平衡分析

Balance of Boron in Farmland Ecosystem in Calcareous Alluvial Soil of Jianghan Plain in Hubei Province

农田生态系统中N2O排放量；④影响硝化反硝化作用和N2O产生与排放的主要因素；

Main factors influenced nitrification-denitrification activities and N2O production and release ;

长江中下游地区农田生态系统N2O排放

N_2O Emission from Agricultural Ecosystem in Middle-Lower Reaches of the Yangtze River Region

华东地区稻麦轮作农田生态系统N2O排放的模拟研究

A Simulating Study of N_2O Emission from a Rice-Wheat Rotation Ecosystem in Southeast China

Cd、Pb、Cu、Zn、As复合污染在农田生态系统的迁移动态研究

Dynamic migration of CD , pb , cu , zn and as in agricultural ecosystem

川中丘陵农田生态系统的CO2排放通量研究

Studies on Emission Fluxes of CO_2 from Soil-Crop Ecosystem in the Hilly Area of the Central Sichuan Basin

以水体富营养化的限制因子P为例，探讨并介绍了一种对农田生态系统非点源污染敏感性的空间分布进行评价的方法。

An approach for assessing spatial distribution of agricultural non point source pollution in farm ecosystems , taking P as an example , is introduced .

目前的研究表明大气中约80%的N2O增长量来自农田生态系统。

Recent research suggested that about 80 % net increase of atmospheric N_2O was probably caused by agro-ecosystems .

重工业城市农田生态系统中Hg污染及防治

Mercury Pollution and Its Control of Agriculture Eco-System in Heavy Industry City

就国际上通行的CENTURY模型及其在农田生态系统的应用进行了简介，并就农田生态系统应用CENTURY模型时所需的重要参数及其确定的方式方法加以描述。表1，参12。

CENTURY model and its application in farmland ecosystem were introduced ; relevant parameters required by CENTURY model and their determination were described in this paper .

基于DSS的1978-2005年中国区域农田生态系统氮平衡

Nitrogen balance in agro-ecosystem in China from 1978 to 2005 based on DSS

农田生态系统土壤CO2释放研究

Study on soil CO_2 emission in agri-ecosystems Machine Proccessing of Remotely Sensed Data and Soil Information Systems and Remote Sensing and Sail Survey

结果表明：农田生态系统中N、P等迁移、淋失状况随轮作方式、作物种类及施肥状况而变化；

The results indicated that the transfer and loss of N and P vary with means of rotation , types of crops and the amount of fertilizer application .

然而长期覆膜会改变农田生态系统表层土壤的含水量、温度以及土壤养分，特别是土壤中的N素；有可能直接影响生产的可持续性。

However , long-term mulch treatment changes water content , temperature , and soil nutrients , especially N concentrations , which may-be direct impacts on the sustainability of production .

PRA方法在农田生态系统杂草综合评价中的应用

Preliminary use of PRA in integrated evaluation of weeds in farming ecosystem

UV-B辐射增强对农田生态系统的影响是人们普遍关注的问题。

More attentions have been paid to the effects of elevated UV-B radiation on ecological processes in agro-ecosystem .

农业植被净初级生产力代表了农田生态系统固定大气CO2的能力，是陆地生态系统碳循环的重要组成部分。

Plant net primary production ( NPP ) of agriculture vegetation represents the capacity of sequestrating atmospheric CO2 in agro-ecosystem , and plays an important role in terrestrial carbon cycling .

基于SHAW模型对拉萨河谷冬小麦农田生态系统水分传输特征的模拟研究

Simulation of the water transfer processes of winter wheat field ecosystem using SHAW in Lhasa river valley

研究影响CO2排放的各种因素，对正确评估农田生态系统CO2源和汇的作用及其在全球气候变化中所扮演的角色具有重要的意义。

The research of various factors that influences CO_2 emission from soil will help to valuate the function of agricultural ecosystems as a sink or source of atmospheric CO_2 , and the role it plays in the climate changes .

本文建立了UV-B增加条件下农田生态系统结构各重要子系统模型，模拟结果表明UV-B增加条件下作物群体生物量模型的模拟值与实测值很吻合。

The paper establishes the three subsystem models of farm ecosystem . The simulation date of crop 's biomass under UV-B radiation enhancement is consistent with observation data .

黑土玉米农田生态系统在作物拔节前期向土壤中施入氮素，将造成这一时期NO-3-N对地下水的短期污染。

Applying the nitrogenous fertilizer during the prophase of crop jointing would result in short-term NO ~ - _3-N pollution to the groundwater .

表明农田生态系统转换为林、草生态系统，有利于土壤有机碳的积累.而且，土壤作为碳汇的功能增强，更有利于CO2固定和生态环境改善。

These indicated that the conversion of farmland system into forest and grassland ecosystems was favorable for the accumulation of soil organic carbon and much more favorable for carbon fixation and ecological environment improvement because it increased the capacity of soil functioning as a carbon sink .

土壤有机碳（SOC）的数量和质量在很大程度上与维持和提高土壤肥力密切相关。农田生态系统土壤碳库研究一直是农业、生态和环境领域的一个主要方向。

The maintenance and improvement of soil fertility greatly rest with the quantity and quality of soil organic carbon ( SOC ), while the study of SOC pool in farmland ecosystem is a main research direction of agricultural , ecological , and environmental sciences .

基于当地土壤特性和田间管理的校正，DNDC模型为评价农田生态系统N2O的排放提供了强有力的工具。

By modifying some parameters based on the local soil properties and management , the DNDC model could become a powerful tool for estimating N2O emission from agro-ecosystem .

用经典统计分析和地统计学的方法，对中国生态系统研究网络（CERN）临泽站新设置的农田生态系统综合观测场土壤性状的空间分布特性进行研究。

It was carried out to examine the characteristic of soil properties and their spatial heterogeneity on the comprehensive observation field of Linze farmland ecosystem network using methods of classical statistics and geostatistics .