怀来山盆系统优化生态-生产范式

山盆系统是由山地和盆地组合而成的一种典型地貌组合。以河北怀来县为例,通过对区域生态经济系统的评价分析,以及对系统产业结构调整和土地利用结构优化的探讨,以生态环境恢复重建和农业可持续发展为目标,构建了怀来山盆系统“山间盆地．低山丘陵-中山山地”生态．生产范式。怀来山盆范式的功能带包括3“圈”5“带”：（1）山间盆地：①官厅水库,②环库水源保护带,③河谷平原高效农业经济带;（2）低山丘陵：④低山丘陵舍饲养畜和人工林（果园）灌草带;（3）中山山地：⑤中山山地林灌草生态保育带。

Optimized eco-productive paradigm for mountain-basin system in Huailai County, Hebei Province

The mountain-basin system(MBS) is composed of two subsystems,altitudinal belt of montane vegetation and cycles of horizontal vegetative belt in basin.Huailai MBS,Hebei Province lying in farming-pastoral zone of North China,is one of the typical MBS physiognomy.It was chosen as our case study area to establish an optimized eco-productive paradigm.In the hope of realizing ecological restoration and agriculture sustainable development,a "Intermontane basin-Low mountain and hill-Mid-mountain" eco-productive paradigm of Huailai MBS was established through the evaluation and analysis on the local eco-economic situation,the agricultural structure adjusting and optimized landuse structure.Huailai MBS contains three "circles": intermontane basin,low mountain and hill,mid-mountain,including five functional belts,viz.Guanting Reservoir,protective belt surrounding reservoir,high efficient agri-economic belt in river valley plain,raising livestock in sty and artificial woods(fruit tree)-shrub-grass belt in low mountain and hill,and forest-shrub-grass ecological conservation belt in mid-mountain.