Results 11 to 20 of about 1,495,186 (128)
Rapid assessment of insect pollination services to inform decision-making. [PDF]
Abstract Pollinator declines have prompted efforts to assess how land‐use change affects insect pollinators and pollination services in agricultural landscapes. Yet many tools to measure insect pollination services require substantial landscape‐scale data and technical expertise.
Ratto F +15 more
europepmc +2 more sources
Global justice and the opportunity costs of conservation
Abstract Opportunity costs can represent a significant portion of the costs associated with conservation projects and frequently outstrip other kinds of cost. They are typically understood to refer to the benefits someone would have obtained if conservation projects had not required them to give up current activities, such as farming or hunting or if ...
Chris Armstrong
wiley +1 more source
Tropical and subtropical Asia's valued tree species under threat
Abstract Tree diversity in Asia's tropical and subtropical forests is central to nature‐based solutions. Species vulnerability to multiple threats, which affect provision of ecosystem services, is poorly understood. We conducted a region‐wide, spatially explicit assessment of the vulnerability of 63 socioeconomically important tree species to ...
Hannes Gaisberger +72 more
wiley +1 more source
利用长期定位试验(1999年开始保护性耕作,2004年采样测定),研究了豫西旱区坡耕地不同保护耕作对土壤有机碳、全氮和微生物量碳(SMB-C)、微生物量氮(SMB-N)的影响.结果表明:深松覆盖和免耕覆盖耕层有机碳、全氮较传统耕作均有增加,其中深松覆盖耕作下有机碳含量最高,为6.79 g/kg,比传统耕作增加了13.82%;免耕土壤全氮含量最高为0.797 g/kg,比传统耕作增加了10.42%;土壤有机碳、全氮随着土层的加深逐渐降低;长期保护性耕作(免耕、深松)显著增加了土壤微生物碳、氮含量,0~20
张洁 +15 more
doaj +2 more sources
通过对不同留茬高度对地表风速的影响以及留残茬(保护性耕作主要方式)、旋耕和常规翻耕3种耕作方式对土壤风蚀的影响进行比较研究,得出如下结果:留茬高度对地表风速的影响程度不明显,仅与地面有无留茬有关,留茬20cm左右即可有效降低地表风速,减少田间扬沙,抵抗土壤风蚀,是比较适宜的留茬高度;留茬(保护性耕作)、旋耕和常规翻耕3种耕作方式对田间扬沙情况的影响差异明显,其中在60cm高度以内,留茬比常规翻耕减少田间扬沙量34.9%,比旋耕方式减少61.5%,因此,留茬(保护性耕作 ...
常旭虹 赵广才 张雯 侯立白 盂祥云 袁宝龙
doaj +2 more sources
以保护性耕作长期定位试验为研究对象,分析了保护性耕作对土壤不同层次的总碳、活性碳的影响,并计算了各处理的碳库活度、碳库活度指数和碳库管理指数。结果表明,土壤总有机碳和活性碳均随土层的增加而减少,其0~30cm平均总有机碳含量大小为旋耕〉免耕〉翻耕〉对照,秸秆还田提高土壤耕层总有机碳,旋耕和免耕提高表层土壤有机碳.且差异达到显著水平;土壤活性碳平均含量为旋耕〉翻耕〉对照〉免耕,旋耕和翻耕提高土壤活性碳,免耕则降低土壤活性碳,尤其是10~20cm土层活性碳比旋耕下降了27.33%。华北平原0 ...
李琳, 李素娟, 张海林, 陈阜
doaj +2 more sources
Fire occurrence increased with proximity to roads and villages, indicating that human access and activity are major drivers of fire risk. We analyzed spatial patterns of fire in relation to human settlements. Our findings highlight the need for fire management strategies that consider accessibility and human presence in conservation planning.
Aung Lin +4 more
wiley +1 more source
Our study addresses the significant knowledge gap regarding the wintering population and habitat utilization of the Yellow‐breasted Bunting (Emberiza aureola) in Nepal, providing crucial insights that can aid in the conservation of this critically endangered species in wintering grounds.
Hem Bahadur Katuwal +6 more
wiley +1 more source
China's Eco‐Civilisation, Climate Leviathan, and Hobbesian Energy Transition
Abstract Scholars have hitherto tended to theorise China's ecological civilisation project either as a form of environmental authoritarianism or as a vision of eco‐socialism. This paper contributes to the conversation by conducting a textual analysis of Chinese scholarly discussions on eco‐civilisation.
David Chen
wiley +1 more source

