Results 21 to 30 of about 1,594 (153)
Construction of Ecological Security Pattern in Ecological Barrier Zone of Loess Plateau Based on “Importance-Sensitivity-Landscape Features” [PDF]
, 2022 [Objective] The relationship between ecological spatial network structure and soil conservation was analyzed in order to provide countermeasures and suggestions for improving ecosystem services in the Loess Plateau barrier region.
Liu Hongjun +5 more
core +1 more source
Characteristics of Changes in Factors Influencing Wind Erosion and Erodibility of Soils in Mu Us Sandland During Desertification Reversal [PDF]
, 2023 [Objective] The influences of the desertification reversal process on soil wind erosion in the Mu Us sandland were studied in order to provide a scientific reference for the prevention and control of wind erosion and for ecological reconstruction in this
Feng Jiaxin +3 more
core +1 more source
Shuitu Baochi Xuebao, 2006 通过对宁南山区采取不同恢复措施的土壤水分、理化性质及酶活性的研究结果表明：土壤平均含水量最高的是农田18．61％，其次为林地16．73％、人工草地9．95％，最小的为天然草地9．20％；土壤总孔隙度、土壤碱解氮排列顺序为林地〉农田〉人工草地〉天然草地；土壤毛管孔隙度、土壤速效磷平均含量排列顺序为人工草地〉林地〉农田〉天然草地；土壤有机质平均含量为灌木林地〉农田〉天然草地〉人工草地；土壤速效钾的平均含量为天然草地〉农田〉人工草地〉灌木林地。土壤尿酶含量为人工草地〉天然草地=农田〉林地；土壤蔗糖酶 ...
李生宝, 王占军, 王月玲, 季波
doaj +2 more sources
Shuitu Baochi Xuebao, 2003 环县地处陇东黄土高原北部,面积9 326 km2,其天然植被为森林草原与荒漠草原过渡地带.通过对40年前后天然草地植被的比较研究,得出40年来在自然和人类共同作用下,天然草地植被演变的结果是:天然分布的原生植被基本被天然次生植被所替代,植被组成更趋于简单化,天然生长的乔木和灌木群系消失,地带性顶极植被类型短花针茅、长芒草和大针茅群系消失,小面积分布的部分群系消失,各群系中次优势种发生了改变,植被的生态学特征发生变化,生态功能显著降低,天然草地植被严重退化,造成这一结果的主要原因是人类的垦荒 ...
李师翁, 范小峰
doaj +2 more sources
Shuitu Baochi Xuebao, 2022 为研究土地利用方式对土壤碳库的影响,以东北黑钙土区的天然草地、人工林地和耕地为研究对象,采集0—100 cm土体中不同土层样品(A、AB、Bk、BC和C层),测定不同利用方式土壤有机碳(SOC)、水溶性有机碳(WSOC)、轻组有机碳(LFOC)和重组有机碳(HFOC)含量。结果表明:3种利用方式SOC、LFOC和HFOC主要分布在A层,但草地WSOC含量在Bk层最多(0.27 g/kg)。由A~C层,3种土地利用方式土壤有机碳及组分有机碳含量总体均呈减少趋势,但减少程度明显不同,天然草地缓慢减少 ...
李春丽 +4 more
doaj
Spatial and Temporal Distribution Characteristics of Carbon Storage in Handan City Based on PLUS and InVEST Models [PDF]
, 2023 [Objective] The land use patterns and carbon storage distribution in Handan City, Hebei Province during the recent 20 years were analyzed, and the trends in land use changes under an ecological protection policy duirng the next 10 years were determined ...
Han Hongwei +6 more
core +1 more source
Shuitu Baochi Xuebao, 2004 在农牧交错带以小麦地为对照，研究退耕建植草地植被及天然草地植被的水土保持作用。结果表明，退耕建植草地植被可以明显减轻土壤风蚀程度，并有利于土壤在雨季对降水的蓄积；天然草地植被与农田植被相比，可以较好地减轻水蚀的发生。
韩永伟 韩建国 张蕴薇 王堃
doaj +2 more sources
メッシュ データ ニヨル コウイキ ノウリン ヨウチ ノ トチ ブンキュウ ト チイキ ケイカクホウ [PDF]
, 1987 【あとがき】以上の研究によって,土地分級および地域計画の方法についていろいろな点を明らかにすることができた.そしてこの計画が採決され実施に移されることになると次のような問題の解決に当たらねばならないことになる.まず,今までに述べた分析に直接引きつづく課題として畜産物の集荷と資材供給のネット・ワ一ク,加工工場それらを計画管理する畜産基地,林業基地の建設の計画,道路網の計画,用水確保・排水処理などの関連投資計画の諸問題があり,また開発地への入植者の生活・文化・教育環境,集落形成の問題などがある ...
黒田 昭
core +1 more source
An integrated historical study on human–tiger interactions in China 中国人虎互动关系的综合性历史研究
Integrative Conservation, Volume 3, Issue 3, Page 183-195, September 2024.Tigers are important for maintaining a variety of life in the world as they are the top predators in the food chain. Human–wildlife conflict, including conflicts between humans and tigers, has been a global issue throughout history. This article focuses on human–tiger interactions in China, discussing various types of conflicts and measures for ...
Zhihong Cao +4 more
wiley +1 more source
Topical and transdermal botanical formulations of the Chinese pharmacopoeia—A review
Phytotherapy Research, Volume 38, Issue 9, Page 4716-4735, September 2024.Abstract In pharmaceutics, ingredients are classified as active ingredients and excipients. In topical/transdermal phytomedicines, an ingredient may serve both functions. Published information on these dual‐purpose ingredients and their pharmacological relevance is limited.
Jingyi Gu +3 more
wiley +1 more source