Sanjiang plain

The CO2 flux of the rice field of Sanjiang plain were measured during the growing season in2004 , based on eddy correlation system .

基于涡度相关技术，于2004年生长季对三江平原稻田CO2通量进行了观测。

Effects of Land Use Change on Carbon Contents of Marsh Soil in the Sanjiang Plain

土地利用对沼泽湿地土壤碳影响的研究

Seasonal variation of iron content in typical wetland plants and in wetland farmland crops in Sanjiang Plain of Northeast China

典型湿地植物与湿地农田作物铁含量的季节变化特征

Study on the Relation of Plant Biomass and CH_4 , N_2 O Emission in the Wetland of Sanjiang Plain

自然沼泽湿地生物量与CH4、N2O排放量关系初步研究

Effects of Changes of Wetlands Landscape on Habitats of Red-Crowned Crane Based on Patch Charts in the Sanjiang Plain , China

基于景观斑块谱特征分析的湿地景观变化对丹顶鹤栖息地影响研究

Wetland birds in Sanjiang Plain were severely disturbed and destroyed because of blindly reclamation and exploitation of wetland resources .

人类的开垦和开发活动使湿地鸟类遭到严重干扰和破坏。

And precipitation during non-growing season was the important water source for the ecologic consumption of water for wetlands ecosystem in the Sanjiang Plain .

非生长季大气降水是沼泽湿地生长季生态用水的重要来源。

The study area could be divided into two aquifer system by the watershed of Wanda Mountain , the small Sanjiang Plain system and Muling-Xingkai Plain system .

以完达山为分水岭，研究区可以划分为小三江低平原和穆棱-兴凯平原两个地下水子系统。

The main reason that the values of ecosystem services of Sanjiang Plain reduced to big extent was the large-area transformation from wetlands to croplands .

大面积湿地转化为农田是生态系统服务价值大幅度下降的主要原因。

The study on the biomass , respiration and P / B coefficient of benthon have been carried out with counting method , sealed apparatus method and cultivation method in Sanjiang Plain .

本文运用计数法、封闭器法和培养法对底栖动物的生物量、呼吸强度和P/B系数进行了研究。

Water scarcity , over pumping of groundwater and imbalance exploitation between surface water-groundwater coexisted in Sanjiang Plain . These problems resulted in the contradiction between water supply and demand , become important factors which restricted the regional sustainable development .

水资源短缺、地下水超采、地表水-地下水开发利用不平衡问题并存，造成了水资源的供需矛盾，成为制约区域可持续发展的重要因素。

Units virtual water content of the rice , maize , potato , soybean , vegetables and melons was lower than the average level of our country , that is to say planting these crops in the Sanjiang Plain will save a lot of water .

通过计算分析，本文主要得出以下结论：1.水稻、玉米、薯类、大豆、蔬菜、瓜类等作物单位农产品虚拟水含量均低于我国平均水平。

Tendency of the Population Variation of Resistant Weeds and Chemical Control in Soybean Field in Sanjiang River Plain Region

三江地区大豆田抗性杂草种群演变趋势及化学防除