Barely Significant

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While their presence was found to be promoted by proximity to settlements, high temperatures at lower elevations and sparse or damaged forest areas, some studies have observed an increasing trend of neophyte occurrences in relatively undisturbed lowland forests [ 5 ], including unmanaged forest reserves [ 29 ].
[ 58 ], based on simple correlations between climatic variables and vegetation, in the Colombian departments of Casanare, Meta, Santander, La Guajira, as well as in the western sector of the departments of Chocó, Valle del Cauca, and Nariño, Alarcón and Pabón [ 59 ] detected a clear trend towards an increase in territorial occupation and coverage of vegetation formations that prefer drier conditions and lower altitudes, unlike those that require higher humidity and elevation conditions, such as these paramos and high Andean forests, which would be displaced from their current distribution.
Considering that proline plays a pivotal role in safeguarding cellular and organ integrity [ 28 ], and its metabolism can stabilize cell homeostasis under stress, it is reasonable that the proline spray on the leaf surfaces augmented the proline content inside the wheat flag leaves, although they showed a decreasing trend under mild drought conditions after rehydration in our study.
There were large differences in the patterns of change in the three indexes between different soil layers under the two nitrogen addition modes, but the similarity of the patterns of change in the TOC:TP and TN:TP in the same soil layer under the same nitrogen addition mode was high (TOC:TP and TN:TP in the 0–10 cm soil layer showed a decreasing trend with low-frequency nitrogen addition, and increased and then decreased in the 10–20 cm soil layer; TOC:TP and TN:TP in the 0–10 cm soil layer showed an increasing trend with high-frequency nitrogen addition, and increased and then decreased in the 10–20 cm soil layer).