| 毛乌素沙地绿洲化过程中生态服务价值及生态网络格局演变 |
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| 引用本文： | 乔碩,王海兵,左合君,刘茜雅,吴月茹.毛乌素沙地绿洲化过程中生态服务价值及生态网络格局演变[J].中国沙漠,2022,42(3):118-126. |
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| 作者姓名： | 乔碩 王海兵 左合君 刘茜雅 吴月茹 |
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| 作者单位： | 内蒙古农业大学 沙漠治理学院/风沙物理与防沙治沙工程重点实验室，内蒙古 呼和浩特 010018 |
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| 基金项目： | 内蒙古自治区科技重大专项(2019ZD007) |
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| 摘 要： | 揭示沙地生态系统服务价值及其稳定性网络格局的动态演变规律，对沙地分区治理及农、林、牧产业结构调整具有重要意义。以1986年以来土地利用变化数据为基础，统计分析毛乌素沙地生态系统服务价值（ESV）时空分异规律，以生态服务价值最大化为目标和策略，利用最小累积阻力模型（MCR），探讨了毛乌素沙地生态网络格局演变规律。结果表明：（1）1986—2020年，随着毛乌素沙地绿洲化过程的推进，林地取代沙地成为毛乌素沙地的主导地类，2020年林草覆盖率达71.38%。（2）1986—2020年，毛乌素沙地生态服务价值整体上升了198.76亿元，1986—2006、2006—2020年沙地生态服务价值增长速率分别为每年2.51亿元和10.62亿元；从空间上来看极高生态服务价值区集中分布在河南乡和毛盖图苏木，至2016年以来逐渐扩展到苏米图苏木、嘎鲁图镇等区域。（3）生态网络格局呈明显的双区分异，即生态网络稀疏的西北区，以沙地复垦地、流动沙丘和半流动沙丘为主；以及生态网络稠密的东南区，以林草覆盖率较高的固定沙地和河流、湖泊水资源丰富地区为主，且随生态服务价值高值点迁移，稳定性网络结构逐年向东北方向偏移。
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| 关 键 词： | 土地利用 生态服务价值 生态网络格局 动态演变 毛乌素沙地 |
| 收稿时间： | 2021-08-30 |
| 修稿时间： | 2022-01-13 |
Evolution of ecological service value and network pattern of Mu Us Sandy Land |
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| Shuo Qiao,Haibing Wang,Hejun Zuo,Xiya Liu,Yueru Wu.Evolution of ecological service value and network pattern of Mu Us Sandy Land[J].Journal of Desert Research,2022,42(3):118-126. |
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| Authors: | Shuo Qiao Haibing Wang Hejun Zuo Xiya Liu Yueru Wu |
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| Institution: | College of Desert Control / Key Laboratory of Wind Blown Sand Physics and Sand Control Engineering，Inner Mongolia Agricultural University，Hohhot 010018，China |
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| Abstract: | Revealing the dynamic evolution of the sandy ecosystem service value and its stability network pattern has important practical guiding significance for the regional management of degraded desert and the adjustment of the agricultural， forestry and animal husbandry industry structure. Based on the land use change data since 1986， this paper statistically analyzes the temporal and spatial differentiation of the ecosystem service value （ESV） of the Mu Us Sandy Land. It takes the maximization of ecological service value as the goal and strategy， and uses the least resistance model （MCR） to discussing the evolution law of the ecological network pattern in the Mu Us Sandy Land. The results show that： （1） In the past 34 years， with the progress of the Mu Us Sandy Land oasis process， woodland has replaced desert to become the dominant land type in the Mu Us Sandy Land， and the forest and grass coverage rate reach 71.38% in 2020. （2） From 1986 to 2020， the overall ecological service value of the Mu Us Sandy Land has increased by 19.876 billion yuan. During the process of oasis， the growth rate of desert ecological service value from 1986 to 2006 and 2006 to 2020 was 251 million yuan·yr-1 and 1.062 billion yuan·yr-1 respectively； from a spatial point of view， extremely high ecological service value areas were concentrated in Henan Township and Maugaitu Sumu， and has gradually expanded to Sumitusum， Gartu Town and other areas since 2016. （3） The ecological network pattern is obviously different， namely the northwest area where the ecological network is sparse， mainly sand reclamation land， mobile sand dunes and semi-mobile sand dunes； and the southeast area with dense ecological network is covered by forests and grasses. High fixed desert and areas with rich water resources in rivers and lakes are the main areas， and with the migration of high value points of ecological service value， the stability network structure shifts to the northeast direction year by year. |
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| Keywords: | land use ecological service value ecological network pattern dynamic evolution Mu Us Sandy Land |
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