耕地净初级生产力及生态服务价值时空分异研究──以甘肃省白银区为例
发布时间：2019-05-11 00:06
【摘要】：耕地是人类赖以生存的基本资源,为促进甘肃省白银区耕地的持续健康发展,对研究区耕地净初级生产力(NPP)和生态服务功能的时空分异进行定量分析。结果表明:2004—2014年白银区耕地的NPP和生态服务单位面积价值量略有上升,且耕地的NPP和生态服务单位面积价值在空间分布上有显著的区域差异性,可分成NPP和生态服务价值相对较低的北部区域和相对较高的南部区域。在北部区域,耕地生态服务单位面积价值为4.66万元/(hm~2·a),NPP为3.27 t/(hm~2·a);在南部区域,生态服务单位面积价值为5.46万元/(hm~2·a),NPP为5.38 t/(hm~2·a);白银区耕地的生态服务价值主要以土壤保持和大气调节价值为主,占总价值的76.87%。
[Abstract]:Cultivated land is the basic resource on which human beings depend for their survival. In order to promote the sustainable and healthy development of cultivated land in Baiyin area of Gansu Province, the temporal and spatial differences of net primary productivity (NPP) and ecological service function of cultivated land in the study area were quantitatively analyzed. The results showed that the NPP and eco-service unit area value of cultivated land in Baiyin area increased slightly from 2004 to 2014, and the spatial distribution of arable land NPP and eco-service unit area value had significant regional difference. It can be divided into the northern region with relatively low value of NPP and ecological service and the southern region with relatively high value. In the northern region, the unit area value of cultivated land ecological services is 46600 yuan / (hm~ 2 路a), NPP 3.27 t / (hm~ 2 路a);). In the southern region, the unit area value of ecosystem services is 54600 yuan / (hm~ 2 路a), NPP 5.38 t / (hm~ 2 路a);) The ecological service value of cultivated land in Baiyin area was mainly soil conservation and atmospheric regulation, accounting for 76.87% of the total value.
【作者单位】： 西北师范大学地理与环境科学学院;
【基金】：国家自然科学基金项目“黑河中游灌区尺度土地利用变化及其驱动力研究”(41561024)
【分类号】：F323.211;S181
本文编号：2474102
[Abstract]:Cultivated land is the basic resource on which human beings depend for their survival. In order to promote the sustainable and healthy development of cultivated land in Baiyin area of Gansu Province, the temporal and spatial differences of net primary productivity (NPP) and ecological service function of cultivated land in the study area were quantitatively analyzed. The results showed that the NPP and eco-service unit area value of cultivated land in Baiyin area increased slightly from 2004 to 2014, and the spatial distribution of arable land NPP and eco-service unit area value had significant regional difference. It can be divided into the northern region with relatively low value of NPP and ecological service and the southern region with relatively high value. In the northern region, the unit area value of cultivated land ecological services is 46600 yuan / (hm~ 2 路a), NPP 3.27 t / (hm~ 2 路a);). In the southern region, the unit area value of ecosystem services is 54600 yuan / (hm~ 2 路a), NPP 5.38 t / (hm~ 2 路a);) The ecological service value of cultivated land in Baiyin area was mainly soil conservation and atmospheric regulation, accounting for 76.87% of the total value.
【作者单位】： 西北师范大学地理与环境科学学院;
【基金】：国家自然科学基金项目“黑河中游灌区尺度土地利用变化及其驱动力研究”(41561024)
【分类号】：F323.211;S181
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