摘要
以蒙自喀斯特断陷盆地为例,利用CLUE-S模型设置自然演化、微度、适度、强力生态治理情景并探究2030年不同情景对生态系统服务的影响及权衡与协同特征。结果表明:(1)2018年蒙自喀斯特断陷盆地植被净初级生产力(NPP)、产水量、覆盖型喀斯特区土壤保持量、裸露型喀斯特区土壤保持量、食物供给量分别增加了13.98%、38.97%、23.04%、25%、105.43%,且各种服务变化存在一定的空间差异性;(2)随着生态治理力度加大,2030年NPP和土壤保持量不断增加,产水量不断减少,食物供给量在强力生态治理情景下减少,在其他三种情景下增加;(3)NPP与产水量、食物供给量为权衡关系,与土壤保持量为协同关系;产水量与土壤保持量为权衡关系,与食物供给量为协同关系;土壤保持量与食物供给量为权衡关系;(4)相较于2018年,适度生态治理情景下四种生态系统服务之间的协调性最好,是较为合理的生态治理模式。
The karst critical zone is the near-surface layer of the Earth including vegetation,soil,water,and rocks in the karst area.It is sensitive to the changes of external environment due to the karst power provided by the Five Circles.And the karst critical zone has been regarded as one of the important ecological barrier areas in China.It is very necessary to study the ecological environment in the zone.Therefore,taking the Mengzi karst graben basin(MKGB)as a case,this study hopes to provide some suggestions for ecological governance in the karst critical zone.MKGB is located in the southeast of Honghe Hani-Yi Autonomous Prefecture in Yunnan Province.Its boundary is almost consistent with the third-largest karst underground river system(the Nandong underground river watershed)in South China.With the influence of natural and human activities,karst rocky desertification is severe in this area.The forest is mainly composed of artificial forest,secondary forest and shrub forest.The ecosystem is imbalanced and the capability of ecosystem services has been reducing.At present,China has launched the project to control rocky desertification,and the main way is to return farmland to forest or grassland.Previous studies have also shown that optimizing land use mode can achieve win-win results between ecological environment and human benefits.However,the pattern and intensity of land use change is unclear in the control of rock desertification.It will be difficult to make reasonable policies for ecological protection if the problem is not paid more attention to.Ecosystem services and the relationship(trade-off and synergy)are important indicators to measure the structure of ecosystem.Therefore,we quantitatively analyzed the current status of ecosystem services and simulated the land use change to maximize ecosystem services in MKGB.In this study,we evaluated regional Net Primary Productivity(NPP),water yield,soil retention of covered and bare karst areas and food supply by respectively using Carnegie-Ames Stanford Approach(CASA
作者
陈金珂
蒲俊兵
李建鸿
张陶
CHEN Jinke;PU Junbing;LI Jianhong;ZHANG Tao(Key Laboratory of Karst Dynamics,MNR&GZAR/Institute of Karst Geology,CAGS,Guilin,Guangxi 541004,China;Chongqing Key Laboratory of Wetland Science Research of the Upper Reaches of the Yangtze River/Chongqing Key Laboratory of Surface Process and Environment Remote Sensing in the Three Gorges Reservoir Area,School of Geography and Tourism,Chongqing Normal University,Chongqing 401331,China;Southwest University School of Geographical Sciences,Chongqing Key Laboratory of Karst Environmental Science,Chongqing 400715,China)
出处
《中国岩溶》
CAS
CSCD
北大核心
2023年第1期94-108,共15页
Carsologica Sinica
基金
国家重点研发计划项目“不同气候区喀斯特关键带水文—生态耦合过程对比研究”(2021YFE0107100)
重庆师范大学基金项目(21XRC002)。
