安塞区

以黄土丘陵沟壑区安塞试区为例，通过野外调查和室内分析，对小流域土壤养分状况进行了研究。

Based on outdoor investigation and indoor analysis for the soil nutrient situation in Ansai experimental area , the results show , the fertility of soil is very poor .

安塞黄土丘陵区人工草地水分有效利用研究

Study on Water Use Efficiency of the Artificial Grassland at Ansai County in the Loess Hilly Region

应用动态灰色模型群预测水土保持效益&以安塞水土保持实验区为例

Predicting whole benefit of soil and water conservation with dynamic grey model group & taking Ansai experimental area in soil and water conservation as example

该模型群的一般形式为三个模型群经检验是有良好精度的有效预测，并用于预测安塞水土保持实验区的总体效益。

The model group is examined to be effective in prediction with a good precision and it predicted the whole benefit of Ansai experiment area of soil and water conservation .

根据在安塞黄土丘陵沟壑区的观测资料，对5～7龄沙棘林地土壤水分及其对生长的影响进行了定量研究，为提高沙棘林地土壤水分利用率，改善其经营管理提供了科学依据。

According to the observed data from loess hilly region at Ansai county in 1998 , soil moisture of 5 ~ 7 year seabuckthorn stands and its influence on seabuckthorn growth are studied .