基于"三生用地"的四川丘陵区乡村生态系统服务价值及其供需格局评估

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国家科技期刊平台
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中文摘要：科学评估乡镇尺度生态系统服务价值(ESV)是乡村生态系统生产总值(GEP)定量核算以及镇域国土空间规划的重要前提.以四川丘陵区 215 个典型乡镇为研究对象,基于乡村生产—生活—生态用地("三生用地")分类系统和单位面积价值当量因子法,定量评估了乡镇尺度生态系统服务价值的空间分布及供需格局特征,并引入和弦图清晰表达了生态系统服务之间的权衡与协同关系.研究结果表明:(1)研究区乡村ESV空间分布存在明显的空间异质性和聚集特征,总体上南部和西南部丘陵区ESV高于北部和中部,中部地区ESV最低同时,ESV热点主要集中于西部和南部,冷点主要分布于中部和东北.(2)2015 年,研究区 ESV 为 62705 元·hm-2,以调节服务为主(75.69%),其次为食物生产(9.07%)和生境服务(6.45%).以农业生产用地为主导的乡村"三生用地"格局很大程度上导致了四川丘陵区ESV偏低,提升生态用地的数量与质量是改善区域生态系统服务的关键.对 ESV 的贡献率较高的"三生用地"类型为:乔木林地(41.25%)、河流湿地(22.95%)、水田(15.08%)、旱地(12.13).(3)生态系统供给服务与其他三类服务均存在权衡关系,而调节、文化和生境服务之间为协同关系.随着人类对食物与水资源获取能力的增强,可能导致研究区大部分生态系统服务的下降.(4)研究区生态系统服务供需失衡较为明显,供需模式以 L—H(39.98%)和 H—L(35.92%)为主,呈现两极分化的趋势.同时,H—H模式"三生用地"结构合理,经济生态效益协调,是乡镇尺度可持续发展的代表模板.本文研究结果可为四川盆地乡村振兴空间布局优化以及长江上游生态环境保护提供科学依据.

外文标题：The value and supply-demand pattern of ecosystem services based on the production-living-ecological land classification system in typical hilly areas of Sichuan

外文摘要：The quantitative assessment of Ecosystem Services Value(ESV)at the township scale has important reference value for rural Gross ecosystem product(GEP)and the optimization of the spatial layout of rural revitalization.Taking 215 typical towns in the hilly area of Sichuan,based on the classification system of Production-Living-Ecological Land(PLEL)Classification System and the value-equivalent factor method per unit area,this paper quantitatively evaluated the spatial distribution,trade-offs,synergies,and the characteristics of supply and demand pattern of ESV at the township scale.The results showed that:(1)There was obvious spatial heterogeneity and aggregation characteristics in the rural ESV spatial distribution in the study area.The ESV in the hilly areas of the south and southwest was higher than that in the north and central,and the ESV in the central area was the lowest.Meanwhile,ESV hotspots were mainly concentrated in the west and south.The cold spots were mainly distributed in the central and northeast.(2)In 2015,the ESV of the study area was 62705 yuan/hm2,with regulation services(75.69%),food production(9.07%)and habitat services(6.45%).The types of PLEL with a high contribution rate to ESV were:arbor woodland(41.25%),river wetland(22.95%),paddy field(15.08%),and dry land(12.13).(3)The introduction of chord diagrams in this paper clearly expressed the trade-off and synergy between ecosystem services,where supply services and the other three types of services all had a trade-off relationship,while regulation,culture,and habitat services are synergistic.(4)The imbalance between supply and demand of ecosystem services in the study area was obvious,and the supply and demand patterns were mainly L-H(39.98%)and H-L(35.92%),showing a trend of polarization.The H-H model had a reasonable structure and coordinated economic and ecological benefits.It was a representative template for sustainable development at the township scale.The results of this study can provide references for the decision-making of ecological environment protection in the Sichuan Basin and the upper reaches of the Yangtze River.

外文关键词：

ecosystem service valuesupply and demand patternProduction-Living-Ecological Land(PLEL)township scaleSichuan hilly area

作者：

廖桂堂、林正雨、何鹏、高雪松、方从刚、邓欧平、王珊、邓良基

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作者单位：

成都信息工程大学资源环境学院, 成都 610225

四川省农业科学院农业信息与农村经济研究所, 成都 610066

四川农业大学资源学院, 成都 611130

成都市国土资源信息中心, 成都 610041

内江师范学院地理与资源科学学院, 内江 641100

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关键词：

生态系统服务价值供需格局三生用地乡镇尺度四川丘陵区

基金：

国家重点研发计划资助项目四川省杰出青年科技人才项目成都信息工程大学引进人才科研启动项目四川省农业科学院计划项目

项目编号：

2020YFD11006012020JDJQ0073KYTZ2021161+9KJGG009

出版年：

2024

DOI：

10.14108/j.cnki.1008-8873.2024.02.017

生态科学

广东省生态学会暨南大学

生态科学

CSTPCD北大核心

影响因子：0.464

ISSN：1008-8873

年,卷(期)：2024.43(2)

参考文献量63