粮食主产区种植业生态经济系统投入产出能值空间差异与态势研究——以河北省为例
Spatial Differences and Trend of Emergy Input and Output Indices of Planting Eco-economic System in Major Grain Producing Area: A Case of Hebei Province
{{custom_ref.label}} |
{{custom_citation.content}}
{{custom_citation.annotation}}
|
/
〈 | 〉 |