土地利用演变对国家公园生态系统服务价值的影响
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湖南师范大学

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国家社科基金项目“国家公园生态系统服务价值评估及生态补偿长效机制研究”(20BGL292)


The impact of land use evolution on ecosystem service value of National parks
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Hunan Normal University

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    摘要:

    分析土地利用演变对国家公园生态系统服务价值的影响,是推进国家公园生态文明体制建设的重要依据。为厘清二者之间的影响效应,本文采用生态系统服务价值修正模型、土地利用动态度、价值变率模型及交叉敏感性系数对青海省三江源国家公园2000~2018年土地利用演变对生态系统服务价值的影响进行研究,结果表明:(1)19年间三江源地区的土地利用演变表现为荒漠、草地、水体三地类间的互相转换,且主要变化于长江源园区西北部和北部,地类的转移方向与当地气候变化相关;(2)从时间变化来看,三江源地区的生态系统服务价值呈现“向好”态势,草地和水体对园区生态环境贡献较大,土地利用类型的演变与生态系统服务价值存在一定的关联;(3)从空间变化来看,三园区的生态系统服务价值总体呈增长态势,但存在明显的空间差异,从高值到低值依次为:长江源>黄河源>澜沧江源,呈现从西北向东南递增的分布特征,与当地温湿气候空间特征一致。(4)两地类转换对生态系统服务价值的影响程度从大到小排序为:荒漠与水体>草地与水体>荒漠与草地,土地利用转型跨度愈大,对生态系统服务价值的影响就愈强。研究时段内生态敏感性系数呈现先升高后降低的特征,表明生态环境的变化也会反作用于土地利用对生态系统服务价值影响的敏感性。

    Abstract:

    The analysis of the impact of land use evolution on the ecosystem service value of national parks is an important basis for promoting the construction of national park ecological civilization system. In order to clarify the impact of the two, this paper uses the ecosystem service value correction model, land use dynamic degree, value variability model and cross sensitivity coefficient to study the impact of land use evolution on ecosystem service value of Sanjiangyuan National Park in Qinghai Province from 2000 to 2018. The results demonstrate that: (1) in the past 19 years, the land use evolution of the three river source areas is characterized by the mutual transformation among desert, grassland and water, and the main changes occurred in the northwest and north of the source zone of the Yangtze River, and the shift direction of land types was related to the local climate change; (2) From the perspective of time change, the ecosystem service value of the three river source area presents a "good" trend, The grassland and water contributed more to the ecological environment of the park, and there was a certain correlation between the evolution of land use types and the ecosystem service value. (3) From the perspective of spatial change, the ecosystem service value of the three parks showed an overall growth trend, but there are obvious spatial differences, From high value to low value, the Yangtze River source > Yellow River source >Lancang River source showed an increasing distribution from northwest to southeast, which was consistent with the spatial characteristics of local warm and humid climate. (4) The impact of land use transformation on ecosystem service value was ranked as follows: Desert and water > grassland and water > desert and grassland. The larger the span of land use transformation, the stronger the impact on the value of ecosystem services. During the study period, the ecological sensitivity coefficient firstly increased and then decreased. it shows that the change of ecological environment will also affect the sensitivity of land use to ecosystem service value.

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王兆峰,许静.土地利用演变对国家公园生态系统服务价值的影响.生态学报,,(). http://dx. doi. org/[doi]

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