Results 21 to 30 of about 1,091,898 (247)

Open‐land‐derived agroforestry and effects of abandonment of management of the main crop on ecosystem services and woody plant diversity

PLANTS, PEOPLE, PLANET, EarlyView.
Tropical forests are rapidly declining. One promising strategy to reverse the loss of tropical forest is the establishment of agroforestry on open land. We combined interviews with biodiversity surveys to learn general lessons from success and nonsuccess stories of the establishment of open‐land‐derived coffee agroforests in one of the world's ...
Lucas M. Fonzaghi, Kristoffer Hylander, Thiago S. de Melo, Ayco J. M. Tack   +3 more
wiley   +1 more source

Duval五边形在有载分接开关状态诊断中的应用

Gaoya dianqi, 2023
对比分析了Duval五边形法及Duval三角形法两种基于油中溶解气体分析的方法在鉴别有载分接开关状态方面的效果，确定了Duval五边形中与有载分接开关正常状态对应的区域，并利用Duval五边形法对特高压换流变压器有载分接开关进行实际诊断。结果表明：Duval五边形法可以实现有载分接开关正常及异常状态的辨识，超过95.5%正常状态的有载分接开关气体体积分数特征点落在编号为D1的低能放电区域；对245台有载分接开关状态进行识别的结果表明，Duval五边形法对正常状态的诊断准确率高于Duval三角形法 ...
韩丹丹, 张亮, 邹梦
doaj  

The shared benefits of fallen fruits: A novel mechanism stabilizing a nursery pollination mutualism between Sambucus and kateretid beetles

PLANTS, PEOPLE, PLANET, EarlyView.
Understanding how cooperative interactions remain stable matters for biodiversity because many plants rely on specialist insects that can also impose reproductive costs. We studied the interaction between Sambucus sieboldiana and seed‐consuming Heterhelus beetles through detailed field observations and pollination experiments.
Suzu Kawashima, Hidehito Okada, Sadatomo Hisamatsu, Kenji Suetsugu   +3 more
wiley   +1 more source

Perspectives and behaviors surrounding planting practices in North America inform genetic conservation realities for American ginseng (Panax quinquefolius)

PLANTS, PEOPLE, PLANET, EarlyView.
American ginseng is a shade‐obligate, North American medicinal plant that is widely traded and used internationally. To meet global demand, ginseng is cultivated in forest farms in the Appalachian region of the USA and field‐based artificial shade farms in two regions: Ontario, Canada and Wisconsin, USA. We conducted social research leveraging in‐depth
Rachel E. Palkovitz, Mary K. Shenk, Eric P. Burkhart   +2 more
wiley   +1 more source

Scaling from microsite to landscape to resolve litter decomposition dynamics in globally extensive drylands

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop, Jiwei Li, Daryl L. Moorhead, Sasha C. Reed, Katherine E. O. Todd‐Brown, Alexi C. Besser, Dellena Evelyn Bloom, Thomas C. Ingalls, Alejandro Cueva   +8 more
wiley   +1 more source

汉中荒草地整治后耕作层土壤颗粒分形特征

Shuitu Baochi Xuebao, 2016
运用分形模型，结合野外调查和室内试验分析汉中市荒草地整治后耕作层土壤颗粒分形特征，探讨土壤颗粒分形维数与土壤质地、粒径组成以及养分含量的关系，建立整治后耕作层土壤分形维数预测函数。结果表明：（1）整治后土壤颗粒分形维数D介于2.55～2.95之间，均值为2.77，标准差为0.134，土壤颗粒分形维数与土壤质地有一定的关系，表现为土壤质地越细，分形维数越大。（2）土壤颗粒分形维数主要是由黏粒含量决定，分形维数与黏粒含量呈显著线正相关（R2=0.978 0）；利用分形维数与土壤黏粒（≤0.002 mm ...
雷, 韩霁昌
doaj  

Organ‐specific ozone and nitrogen legacies strengthen substrate control over litter decomposition

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Elevated tropospheric ozone (O3) and nitrogen (N) deposition are concurrent atmospheric changes that strongly influence terrestrial carbon cycling, yet their combined effects on below‐ground decomposition remain poorly understood.
Xiaofan Hou, Pin Li, Yuqian Sun, Chenhan Ma, Yushu Tian, Qiannan Lin, Yun Li, Lijuan Yin, Dongmei Zhang   +8 more
wiley   +1 more source

Alleviation of phosphorus rather than nitrogen limitation driven by permafrost and landscape effects on Dahurian larch forests

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Permafrost thaw is reshaping nutrient dynamics in boreal forests, but its impacts on tree nutrient limitation and functional strategies remain poorly understood. Clarifying these responses is crucial for predicting the response of boreal forests to climate change.
Qiyue Fu, Liang Shi, Zhaopeng Song, Boyi Liang, Honglin He, Kun Yang, Weihua Zhang, Lisha Lyu, Anatoly S. Prokushkin, Hongyan Liu   +9 more
wiley   +1 more source

Reconstructing Old Chinese *‐ts Using Han‐Time Material

Transactions of the Philological Society, EarlyView.
Abstract Baxter & Sagart (2014b) reconstruct *‐Vt‐s on the basis of Middle Chinese reflexes in ‐jH (from some OC *‐s) coupled with either etymological or graphic connections to words in Middle Chinese ‐t. This approach, while perfectly sound, can suffer from lack of etymological or graphic data, leading to missed reconstructions. Since Old Chinese *‐ts
Julien Baley
wiley   +1 more source

Inferring alternative ecosystem states with field survey data

Methods in Ecology and Evolution, EarlyView.
Abstract Many ecosystems potentially exhibit alternative stable states, where distinct states can coexist under identical environmental conditions. While simulation models have generated key hypotheses in alternative stable states theory, they often rely on scale‐free parameters disconnected from real ecosystems.
Ning Chen, Xiaoxue Dong, Xinwei Li, Lei Huang, Heng Huang, Changjia Li, Yanchuang Zhao, Chi Xu, Miaojun Ma, Zak Ratajczak, Changming Zhao   +10 more
wiley   +1 more source