| 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 |
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| 引用本文： | 武江民,赵军,党国锋,王玉纯,付杰文.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[J].中国农学通报,2016,32(35):65-70. |
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| 作者姓名： | 武江民 赵军 党国锋 王玉纯 付杰文 |
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| 作者单位： | 西北师范大学地理与环境科学学院兰州 730070,西北师范大学地理与环境科学学院兰州 730070,西北师范大学地理与环境科学学院兰州 730070,西北师范大学地理与环境科学学院兰州 730070,西北师范大学地理与环境科学学院兰州 730070 |
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| 基金项目： | 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)。 |
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| 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%。
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| 关 键 词： | 白银区 耕地 NPP 生态服务价值 时空分异 |
| 收稿时间： | 2016/5/28 0:00:00 |
| 修稿时间： | 2016/11/28 0:00:00 |
The Spatial-temporal Variation of Net Primary Productivity and Ecosystem Service Value of Cultivated Land: A Case Study of Baiyin District in Gansu Province |
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| Abstract: | Cultivated land is the basic resources for human survival,in order to promote the sustainable and healthy development of cultivated land in Baiyin district Gansu Province,in this study the spatial and temporal differences of net primary productivity (NPP) and ecological service function of cultivated land is quantitatively analyzed.The results show that:The total value of NPP and ecological service unit area of cultivated land increased slightly in Baiyin district form 2004-2014,and the spatial distribution of NPP and ecological service va1ue was very obvious and divided into the lower value in the northwest area and the higher value in the southeast area.The unit area value of ecological service was about 4.66 million yuan /(hm2·a) and NPP was about 3.27t/ (hm2·a) in the southeast area,while in the northwest area,they were 5.46 million yuan/(hm2·a) and 5.38t/(hm2·a) respectively.The ecological service value of cultivated land is mainly dominated by the value of soil conservation and atmospheric regulation,accounting for 76.87% of the total value in Baiyin district. |
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| Keywords: | Baiyin district Cultivated land NPP Ecological service value Spatial-temporal distribution |
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