Results 41 to 50 of about 606 (130)
Shuitu Baochi Xuebao, 2020 为探究赣南废弃稀土矿区土壤水源涵养功能，对其采矿迹地枯落物层和土壤层贮水功能采用环刀法进行研究。结果表明，不同采矿迹地0—30 cm土层土壤含水量平均值表现为天然林地（180.37 g/kg） > 堆积地（170.67 g/kg） > 挖矿地（86.36 g/kg）；土壤容重平均值表现为堆积地（1.54 g/cm3） > 挖矿地（1.31 g/cm3） > 天然林地（1.20 g/cm3）；土壤毛管孔隙度平均值表现为天然林地（44.08%） > 堆积地（37.89%） > 挖矿地（35.82 ...
李奕, 宋墩福, 王宗丽, 张付远
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Evaluation of Ecosystem Services and Tradeoff and Synergy in the Alpine and Canyon Region of Southwest China Based on Multi-source Geographic Data [PDF]
[Objective] The alpine and canyon region of Southwest China is a crucial ecological security barrier within the national “Three Zones and Four Belts” strategy, and it plays an essential role in ensuring national ecological security and promoting regional
GUAN Yinghui +4 more
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Driving factors analysis of surface soil moisture variation in Zhangjiakou-Chengde district based on geodetector [PDF]
As an important water conservation and sand-windy barrier, Zhangjiakou and Chengde (Zhang-Cheng) district of Hebei Province is very important for ecological protection in the Beijing-Tianjin-Hebei region.
Aifang JIN +4 more
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Shuitu Baochi Xuebao目的旨在探讨喀斯特水源涵养特点及功能，为深入理解其水源涵养内在过程并改进综合评估方法提供理论支持。方法回顾水源涵养的概念发展、生态功能及其评估与研究方法，针对喀斯特区域生态地质特点与水文过程，讨论喀斯特水源涵养特点及其生态功能，展望喀斯特水源涵养研究并提出建议。结果1）喀斯特水源涵养在岩土结构、水文地质条件、生态水文过程方面显著区别于非喀斯特区域。2）喀斯特水源涵养的主要功能包括储存、调节与供给。3）建议利用高精度地球物理探测技术，加强喀斯特地下结构的定量研究与探索，提升对喀斯特地下系统结构的认识 ...
周利, 彭韬, 王世杰
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Hydroecological effects of mining and its restoration ways in coal mining areas of Western China [PDF]
The mining areas in arid and semi-arid region have become important coal production bases to ensure China’s energy strategic security, however, coal development by large-scale and high-intensity mining has triggered a series of water resources and ...
Guangrong GE +7 more
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Theoretical framework, key technologies and engineering applications of geological layer modification in mining [PDF]
The modern coal industry has put additional demands on geological support work in its quest for superior development. Conventional geological exploration theories and technical approaches, which are mainly concerned with resource survey, need to be ...
Anye CAO +10 more
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Shuitu Baochi Xuebao, 2005 对金沙江流域6种不同林分土壤物理性质、凋落物持水量以及林地土壤贮水性能等进行了研究。结果表明，不同林分的土壤物理性质及其水源涵养功能差异明显。在相同的立地条件下，圣诞树纯林和混交林具有更好的维持地力作用和更高的水源涵养功能。依据林地总贮水量的大小，6种林分最大蓄水量大小依次为圣诞树纯林（2851．8t／hm^2）〉华旱混交林（2478．9t／hm^2）〉云华混交林（2432.4t／hm^2）〉云南松纯林（2142．8t／hm^2）〉华山松纯林（1851．8t／hm^2）〉旱冬瓜纯林（1620．3t／hm^
彭明俊 郎南军 温绍龙 郭永清 江期川 杨旭 郑科 郭玉红 张立新
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Litter production, nutrient return and leaf-litter decomposition in natural and monoculture plantation forests of Castanopsis kawakamii in subtropical China [PDF]
, 2003 通过对中亚热带格氏栲天然林 ( natural forest of Castanopsiskawakamii,约 1 5 0年生 )、格氏栲和杉木人工林 ( monoculture plantations of C.kawakamii and Cunninghamia lanceolata,33年生 )凋落物数量与季节动态、养分归还及凋落叶分解与其质量的关系为期 3a的研究表明 ,林分年均凋落量及叶所占比例分别为 :格氏栲天然林 1 1 .0 1 t/hm2 ,5 9.70 t/hm2 ;格氏栲人工林 ...
何宗明 +6 more
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Shuitu Baochi Xuebao目的科学评估黄河上游地区水源涵养能力，为黄河流域生态保护和高质量发展提供科学依据。方法以宁夏为案例区，基于InVEST模型、Hurst指数和地理探测器模型计算1990-2020年宁夏水源涵养功能的时空演变趋势，识别其关键影响因素。结果宁夏土地利用格局变化明显，除未利用地外，其余土地利用类型均呈不同程度的增加趋势；1990-2020年宁夏水源涵养量呈增加趋势，增加幅度约为0.009 mm/a，空间上呈“北低南高”的分布格局，且具有显著的空间集聚特征；宁夏水源涵养功能变化不具有可持续性 ...
王鹏 +7 more
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Shuitu Baochi Xuebao, 2020 以康定县折多山高寒山地灌丛草甸凋落物为研究对象，采用室外调查及室内测定结合的方法分析了凋落物蓄积量、持水及失水过程，以期探讨不同海拔和坡向凋落物水源涵养功能的差异。结果表明：（1）研究区凋落物的蓄积量在4.02~4.77 t/hm2波动，均表现出随着海拔的升高而逐渐降低，且半阴坡>半阳坡，海拔对凋落物蓄积量呈极显著影响（P0.95，P0.99 ...
吕宸 +6 more
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