Water-holding Capacity of Reclaimed Grassland with Different Ages in Karst Regions [PDF]
, 2023 [Objective] The water-holding capacity of reclaimed grassland of different ages was studied in order to provide a scientific basis for water retention and soil and water conservation of reclaimed grassland in karst regions.
Li Xuemei +3 more
core +1 more source
Analysis of Carbon Stock Evolution and Its Vulnerability Characteristics Based on Land Use Change in Guizhou Province [PDF]
, 2023 [Objective] The spatial and temporal distribution pattern and evolution characteristics of ecosystem carbon storage, its response to land use change, and the vulnerability of ecosystem carbon storage service in each county of Guizhou Province were ...
Chen Darong +5 more
core +1 more source
Welfare Effect of Farmers’ Participation in Soil Conservation: Concept, Connotation and Evaluation Index Framework [PDF]
, 2023 [Objective] A concept, connotation and evaluation index framework of welfare effect of farmers’ participation in soil conservation practices was systematically reviewed, which could provide a scientifical basis for comprehensive evaluation of the welfare
He Xiubin +4 more
core +1 more source
Shuitu Baochi Xuebao, 2023 以探明漓江流域喀斯特森林土壤的碳氮磷储量分布为目的,为保护漓江流域脆弱的喀斯特生态系统提供理论依据。在漓江上中下游各流域段的典型喀斯特森林共设置20 m×20 m的15块天然林样方,对森林植被进行每木检尺调查,采用五点采集法采集0-20,20-40 cm土层土壤,分析土壤碳氮磷储量空间分布情况及驱动因子作用途径,量化各类生物和非生物因子对区域喀斯特森林土壤养分储量分布格局形成的作用贡献。结果表明:(1)漓江流域喀斯特森林土壤碳氮磷储量平均分布表现为上游＞下游＞中游,在漓江流域喀斯特森林土壤中碳、氮 ...
钟建军 +7 more
doaj
Shuitu Baochi Xuebao, 2006 分析研究了贵州乌江流域不同喀斯特生态系统的石灰土（岩性均腐土）土壤物理性质。结果表明：喀斯特生态系统（土壤利用方式和土壤侵蚀状况等）是影响土壤物理性质的主要因素。良好生态系统的土壤剖面发育良好，层次分异较明显，土层较深厚；土壤有机质含量较高；以粘壤土和粘土为主；土壤容重适宜，土壤孔隙性和结构性良好，土壤的抗蚀性和抗冲性强。退化生态系统（裸地）的土壤各种物理性状恶化，土壤的抗蚀性和抗冲性减弱。提出评价不同喀斯特生态系统的土壤抗蚀性的主要指标，并得出不同喀斯特生态系统的土壤抗蚀能力依次为：灌丛＋弱度侵蚀 ...
何腾兵 +9 more
doaj +2 more sources
Transpiration Characteristics of Common Trees and Their Responses to Meteorological Factors in Secondary Forests on Karst Slopes [PDF]
[Objective] To explore the transpiration characteristics of common trees and their responses to meteorological factors in secondary forests on karst slopes.
DAI Quanhou +3 more
core +1 more source
Characteristics of Soil Saturated Hydraulic Conductivity and Its Influencing Factors at Different Landscape Positions in a Small Peak-Cluster Depression Watershed of the Karst Region [PDF]
[Objective] Peak-cluster depression is one of the important karst landform types. Exploring the influence of different landscape positions on soil saturated hydraulic conductivity (Ks) can provide a reference for further understanding of the hydrological
HOU Senzheng +5 more
core +1 more source
Shuitu Baochi Xuebao, 2004 广西是一个喀斯特特别发育的地区，水土流失严重．生态环境脆弱。本文兼顾多方面的原因，建立了脆弱生态环境指标体系，确定了脆弱生态环境定量评价的工作流程．包括数据库的建立、脆弱生态评价单元、评价指标及权重和评价方法的确定，借助地理信息系统(GIS)强大的输入、空间分析及制图功能，采用综合评价与聚类方法，对广西喀斯特脆弱生态环境进行了评价和分区．为生态环境建设提供科学依据。
胡宝清 金姝兰 曹少英 蒋树芳
doaj +2 more sources
Characteristics of groundwater circulation in typical karst trough areas：A case study of Longtan trough valley in Youyang, Chongqing [PDF]
Although the southwest karst valley region of China has an abundance of groundwater resources, little is known about the variations in the karst trough valley’s groundwater types and their cycle features. Using the Chongqing Youyang Longtan trough valley
Lian LI +4 more
core +1 more source
Shuitu Baochi Xuebao, 2023 草甘膦除草剂是农业生产中不可或缺的物资,过量使用会导致大量草甘膦及其衍生物在土壤中残留,对生态环境安全构成威胁。通过系统阐述草甘膦在环境中的迁移转化过程,以及草甘膦对土壤生物及环境质量的影响,着重分析了草甘膦对土壤蚯蚓、微生物群落的毒理效应,草甘膦与土壤其他污染物的协同效应和草甘膦驱动土壤碳氮磷生物地球循环变化。同时指出当前研究的不足,并提出下一步研究的重点:(1)加强草甘膦的降解机制和影响因素的研究,并筛选更高效降解能力的微生物菌株,提高草甘膦降解效率和修复草甘膦污染环境的能力;(2 ...
张友 +4 more
doaj