ZHANG Yu,ZHAO Xiaoli,ZUO Lijun,et al.Dynamic Evaluation and Analysis on Ecosystem Service Value in the Loess Plateau[J].Research of Soil and Water Conservation,2018,25(03):170-176.
黄土高原生态系统服务价值动态评估与分析
- Title:
- Dynamic Evaluation and Analysis on Ecosystem Service Value in the Loess Plateau
- 关键词:
- 遥感与GIS; 价值当量修正; 生态系统服务价值动态评估模型; 时空演变分析; 黄土高原
- Keywords:
- RS and GIS; value equivalent correction; dynamic evaluation of ecosystem service value; spatial-temporal change analysis; Loess Plateau
- 分类号:
- F062.2
- 摘要:
- 基于中国陆地生态系统服务价值当量表，综合考虑生态系统服务功能的空间异质性和时间演化性，对生态系统服务价值当量进行时间和空间尺度的修正，降低由于社会发展、资源稀缺度变化及同一生态系统位于不同地理位置导致的价值当量变化。建立了黄土高原生态系统服务价值动态评估模型，并利用该模型开展了黄土高原生态系统服务价值时空动态评估，分析了其演变特征。结果表明：黄土高原在2000年、2005年及2010年的生态系统服务总价值呈持续增加的态势，分别为6 333.91亿元、7 679.95亿元及9 390.46亿元，整个时段增幅达48%。在黄土高原各项生态系统服务功能中，保持土壤价值居首位；其中，森林和草地提供了近80%的服务价值，因此黄土高原治理水土流失问题的关键在于保持和提高森林和草地的质量。从空间上来看，生态系统服务价值高的区域分布在山西、河南及陕西中部和南部；生态系统服务价值增速最快的是内蒙古自治区。黄土高原地区生态系统服务价值的增加，一方面得益于退耕还林还草、三北防护林等生态措施的实施，另一方面源于人们对生态环境保护的不断重视。
- Abstract:
- This study was conducted on the basis of Chinese terrestrial ecosystem service value equivalent. Considering that ecosystem services vary in different time and different space, ecosystem service evaluation model was improved on time and space scale in this paper. Thus the change of value equivalent that was resulted from social development, resource scarcity change and spatial heterogeneity could be reduced. Then the Loess Plateau ecosystem service value dynamic evaluation model was built. Based on the model, we can analyze the ecosystem service value change characteristics on time and space scale. The total value of Loess Plateau was 633.391 billion, 767.995 billion and 939.046 billion in 2000, 2005 and 2010, respectively. The total value increased by 48% from 2000 to 2010. The value of soil conservation which is provided nearly 80% by forestland and grassland is the highest of all the ecosystem service values. So, the key to control soil erosion in Loess Plateau is to maintain and improve the quality of forestland and grassland. If we analyze the ecosystem service value in space scale, we can find that the higher ecosystem service values distribute in Shanxi, He’nan and the central south of Shannxi. And the growth rate of neimenggu’s service value was the first in the Loess Plateau. There were two reasons for the increase of ecosystem service values, one is the contribution of ecological protection measures, such as returning farmland to forestland and grassland, Sanbei shelter forest, the other is human pay more attention to ecological environment.
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备注/Memo
收稿日期:2017-07-16;改回日期:2017-08-21。
基金项目:国家重点研发计划“东北黑土区沟道侵蚀动态监测与评估”（2017YFC0504201）
作者简介:张瑜(1992-),女,湖北省仙桃市人,硕士研究生,研究方向:资源环境遥感应用。E-mail:zhangyu@radi.ac.cn
通讯作者:赵晓丽(1963-),女,陕西省西安市人,研究员,研究方向:资源环境遥感应用。E-mail:zhaoxl@radi.ac.cn