吉林西部盐碱地开发利用生态效应及格局优化——以吉林省白城市镇赉县为例  

Ecological Effects and Pattern Optimization of the Reclamation of Saline-alkali Land in West Jilin--A Case Study in Zhenlai County of Baicheng City in Jilin Province

作　　者：王晶滢 王冬艳[1] 杨月稳 WANG Jing-ying;WANG Dong-yan;YANG Yue-wen(College of Earth Sciences,Jilin University,Changchun 130061,China)

机构地区：[1]吉林大学地球科学学院,吉林长春130061

出　　处：《资源开发与市场》2021年第5期532-538,共7页Resource Development & Market

摘　　要：以吉林省白城市镇赉县为例,运用当量因子法对该县不同类型的盐碱地开发利用过程进行了生态系统服务价值变化的估算,以生态系统服务供需空间差异为依据进行盐碱地开发治理的格局优化。结果发现:2009—2018年镇赉县盐碱地开发率达56.09%,主要开发类型按规模大小划分为转水田、转湿地、转水域、转草地、转旱地5类;盐碱地开发治理提升生态系统服务价值总量(ESV)共9.35亿元,其中转湿地或水域对生态系统服务价值总量(ESV)提升贡献度较大,但对水源条件要求较高,而转水田则在水资源供给、土壤保持方面存在一定程度的生态负效应。依据生态系统服务供需空间差异性,划分4类盐碱地开发利用分区,并提出相应的优化建议。Taking Zhenlai County of Baicheng City in Jilin Province as an empirical case,this paper adopted the equivalent factor method to estimate the variations of ecosystem services value of different types of saline-alkali land reclamation,and further optimized its future recla mation pattern based on the spatial discrepancies of ESV supply-demand.The results showed that:The reclaimed saline-alkali land accounted for 56.09%of the total from 2009 to 2018,and they mainly converted to paddy field,wetland,water body,grassland,or rain-fed land;the reclamation could increase ESV of Zhenlai County by 935 million yuan,and the conversion to wetland or water body were the major contributors but they relied heavily on water sources;Moreover,the conversion to paddy field could exert adverse effects on water supply and soil retention to a certain extent.Finally,this study delineated four types of reclamation zones for saline-alkali land resources in accordance to spatial discrep ancies of ESV supply-demand and put forward corresponding optimization suggestions.

关 键 词：盐碱地开发 生态系统服务价值 供需关系 吉林西部 

分 类 号：F301.24[经济管理—产业经济] X171.4[环境科学与工程—环境科学]