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- 2023-4-19
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草的扩张,影响,后果,展望。人类处于各种原因,有意或者无意地传播植物。举例子。传播植物的后果可能好,中性,或者坏。举例子,本地作物可能产量低,但是外来植物可能入侵、有毒、致敏,造成经济损失。然而大概60%入侵植物是人类故意引进的。
野草的分类,野草的来源。如何处理野草,并研究自然力量对野草传播的作用。
P1 human disperse vascular plant, more than nature
- Accidental: clothing/animals/commerce esp in seeds lots
- Deliberate: human depend on/ancient accounts of plant -> incense trees/fossils of cultivated plants
P2 human disperse plants >> weed
- effect: beneficial/neutral/detrimental
· Beneficial: agriculture ---example: 1. front: agr eco>>not native crops. 2. back: native crop>>cannot support industrialize society
Many die in route. Some prosper -- naturalized or invaders>>weed
- Weed.
-definition: no value bur interfere with human activities
-economic losses/ adverse to health/ ecologic losses>>enormous aggregate cost: AU 3bn, US 26bn
- Origin of weed
-most introduced by human
-mostly deliberately US 60% even higher
>>control current and future weed
P3 topics to explore
- Motivation- trans-oceanically / new range
- Biological basis
- Predictions and preventions
- Nature forces
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