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Effects of Desert Land Cultivation on Soil Aggregate Stability and Carbon Fixation [PDF]

open access: yes, 2023
[Objective] The response of soil aggregate stability and organic carbon before and after land reclamation using different land use types were analyzed in order to provide a scientific theoretical basis for wasteland reclamation, vegetation restoration ...
Chen Xue   +4 more
core   +1 more source

Response of Soil Respiration to Storage Irrigation and Freeze-thaw Cycles in Extremely Arid Areas [PDF]

open access: yes, 2022
[Objective] The effects of water storage irrigation and seasonal freezing and thawing on soil respiration were determined in order to improve the utilization efficiency of irrigation water resources, and save irrigation water resources at Shiyang River ...
Gao Yayu   +3 more
core   +1 more source

Soil Salinization Characteristics of Different Land Use Types in a Typical Oasis Irrigation Area of Lower Tarim River [PDF]

open access: yes, 2023
[Objective] The soil salinization characteristics under different land use types in extremely arid regions were analyzed in order to provide support for the sustainable efficient utilization of regional land resources.
Baiyun Gang   +6 more
core   +1 more source

Spatiotemporal Evolution and Simulation of Future Landscape Patterns in Zhangjiajie City [PDF]

open access: yes, 2022
[Objective] The evolution characteristics of land use and landscape patterns from 2000 to 2020 and 2030 at Zhangjiajie City, Hu'nan Province were analyzed in order to propose an optimization strategy for future development of Zhangjiajie City, and to ...
Li Yuefeng   +3 more
core   +1 more source

Effects of Native Forest Conversion on Soil Labile Organic Carbon and Enzyme Activity in Northwestern Hunan Province [PDF]

open access: yes, 2023
[Objective] The response of soil labile organic carbon components and enzyme activities to natural forest conversion was analyzed in order to provide a scientific basis for predicting regional soil health evolution and environmental change.
Li Xue   +5 more
core   +1 more source

土地利用变化对闽江口湿地土壤生态酶化学计量特征的影响

open access: yesShuitu Baochi Xuebao, 2022
为探究闽江口湿地土地利用和恢复对土壤酶活性的影响,采集闽江口芦苇湿地、滩涂地、草地、农田和撂荒地5种不同土地利用方式,分析土壤β—葡萄糖苷酶、N—乙酰—氨基葡萄糖苷酶、L—亮氨酸—氨基肽酶和酸性磷酸酶活性及与环境因子之间的关系。结果表明:土壤pH、铵态氮和硝态氮在农田土壤显著高于其他土地利用方式;而土壤碳(C)、氮(N)、磷(P)全量含量在撂荒地和芦苇湿地显著高于其他土地利用方式。撂荒地、农田和芦苇湿地可溶性碳氮含量显著高于滩涂和草地土壤;土壤微生物量碳氮含量在不同土地利用方式间变化趋势比较一致 ...
刘子恺   +5 more
doaj  

农牧交错区的荒漠化防治与土地持续利用途径探讨

open access: yesShuitu Baochi Xuebao, 2003
农牧交错区是荒漠化潜在发生地区,不合理的土地利用加剧了荒漠化,合理的土地利用结构和土地利用管理方式则使土地利用走向可持续。以处于农牧交错区的内蒙古伊金霍洛旗为例,讨论了该区荒漠化与土地利用的关系,论证了如何通过优化土地利用结构和改善土地利用管理方式促使荒漠化逆转和土地的可持续利用。
张凤荣 宋乃平 等
doaj   +2 more sources

气候变化问题多学科协同机制实践研究 [PDF]

open access: yes, 2018
由于不合理的人类活动,全球气候正呈现以变暖为主要特征的变化。气候变化及其导致的各种环境事件已经严重影响到人类社会的可持续发展,成为当今国际社会所共同面对的挑战。相关学科基于本学科的研究领域 与研究范畴开展了卓有成效的研究。文章以社会学、伦理学、哲学为视角,横向梳理了相关学科对气候变化问题介入的原因、气候变化问题的认知及相关的研究成果,并进行评述。综合分析和探讨了气候变化问题研究中学科间研究对象、研究目的、研究方法的区别与联系,提出以学科间的自组织系统来研究气候变化问题的观点,进行学科间的跨界交流与探讨 ...
吴金甲   +4 more
core   +3 more sources

Land-use Effect and Seasonal Hydrologic Controls on Nitrogen Export in Typical Sub-watersheds within Jiulong River Watershed [PDF]

open access: yes, 2016
在过去的几十年里,世界范围的大部分地区都经历了由于进入近海的河流氮通量的大量增加而导致的富营养化和其它生态损害。氮、磷作为限制性营养盐,控制着河流-近海系统富营养化,威胁着我们所依赖的生态系统服务与功能。河流营养盐状况是植被、土壤、地形、气候、土地利用状况等自然和人为因素综合作用的结果,这些因素在不同时空尺度内交互作用,使得河流营养盐输出的影响机制研究更具挑战性。本研究开展亚热带流域氮输出对土地利用及水文状况季节性变动的响应,可为流域综合管理和区域用水安全提供科技支撑。 本研究通过现场监测、GIS技术 ...
赵盼盼
core  

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