| 2005-2015年小江流域生态系统服务供需变化及对石漠化的响应 |
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| 引用本文： | 章维鑫,吴秀芹,于洋,曹建华.2005-2015年小江流域生态系统服务供需变化及对石漠化的响应[J].水土保持学报,2019,33(5):139-150. |
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| 作者姓名： | 章维鑫 吴秀芹 于洋 曹建华 |
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| 作者单位： | 1. 北京林业大学水土保持学院, 北京 100083;2. 北京林业大学云南建水荒漠生态系统国家定位研究站, 云南 建水 654399;3. 北京林业大学水土保持国家林业局重点实验室, 北京 100083;4. 中国水利水电科学研究院泥沙研究所, 北京, 100048;5. 中国地质科学院岩溶地质研究所, 广西 桂林 541004 |
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| 基金项目： | 国家重点研发计划项目（2016YFC0502500，2016YFC0502506）；国家自然科学基金项目（41671080） |
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| 摘 要： | 喀斯特地区石漠化及其生态修复引起的土地利用变化，改变了地表植被覆盖等下垫面条件，进而对生态系统服务产生影响。为了探究石漠化治理工程以来生态系统服务变化情况，采用InVEST、CASA模型等多种模型和方法，研究了小江流域2005-2015年水服务、粮食服务和固碳服务的供需时空变化及对石漠化的响应。结果表明：（1）3种服务的供给水平整体都呈现递增趋势，增幅分别为14.34%，44.00%，40.11%，而需求方面，水服务和固碳服务呈现增加趋势，增幅为3.26%和61.54%，粮食服务呈现减小趋势，减幅为6.98%。（2）水服务和粮食服务的供需比均呈现增加趋势，且供给大于需求，而固碳服务的供需比呈现减小趋势，2015年供给小于需求。（3）石漠化面积越大的区域，粮食服务越低，随着石漠化程度的加重，水服务和固碳服务都呈现递减趋势，而随着石漠化面积减小，水服务和固碳服务变化不明显，粮食服务呈现一定程度的增加趋势，其中变化的面积越大，趋势越明显。流域内生态系统服务的供需状况及对石漠化的响应可在一定程度上反映石漠化治理对人类福祉的影响，能够为区域内生态系统的管理以及石漠化综合治理提供重要的参考。
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| 关 键 词： | 生态系统服务供给 生态系统服务需求 生态系统服务供需比 石漠化 小江流域 |
| 收稿时间： | 2019/3/19 0:00:00 |
The Changes of Ecosystem Services Supply-demand and Responses to Rocky Desertification in Xiaojiang Basin During 2005-2015 |
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| ZHANG Weixin,WU Xiuqin,YU Yang,CAO Jianhua.The Changes of Ecosystem Services Supply-demand and Responses to Rocky Desertification in Xiaojiang Basin During 2005-2015[J].Journal of Soil and Water Conservation,2019,33(5):139-150. |
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| Authors: | ZHANG Weixin WU Xiuqin YU Yang CAO Jianhua |
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| Institution: | 1. School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083;2. Jianshui Station for Desert Ecological System Observation and Research, Beijing Forestry University, Jianshui, Yunnan 654399;3. Key Laboratory of Soil and Water Conservation of State Forestry Administration, Beijing Forestry University, Beijing 100083;4. Department of Sediment Research, China Institute of Water Resources and Hydropower Research, Beijing 100048;5. Chinese Academy of Geological Sciences, Guilin, Guangxi 541004 |
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| Abstract: | The land use changes caused by the Karst Rocky Desertification Comprehensive Control and Restoration Project change the underlying surface conditions, such as vegetation cover, and then affect the ecosystem services. In order to identify the changes of ecosystem services, the spatio-temporal changes of supply and demand of water, food and carbon services were explored based on InVEST model, CASA model and multiple methods in Xiaojiang Basin during 2005-2015. The results showed that:(1) The supply of water, food and carbon services showed a significantly increasing trend during 2005-2015, with a growth rate of 14.34%, 44.00% and 40.11%, respectively. The demand of water and carbon also showed a significantly increasing trend, with a growth rate of 3.26% and 61.54%, respectively while food showed a decreasing trend, with decrease rate of 6.98%. (2) The supply-demand ratio of water and food services were increasing and greater than 0, while carbon was decreasing in 2015. (3) The larger area of rocky desertification was, the lower the food service was. With the aggravation of rocky desertification, the water and carbon services decreased. With the decreasing area of rocky desertification, the changes of water and carbon services were not significant, and the food services increased. The larger the changing area was, the more significant the trend was. By analyzing the supply and demand of ecosystem services and the relationships with rocky desertification in Xiaojiang Basin, it could provide important advice for the management of regional ecosystems and the comprehensive management of rocky desertification. |
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| Keywords: | ecosystem services supply ecosystem services demand supply-demand ratio rocky desertification Xiaojiang Basin |
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