4.1. Discussion
According to the coding results (
Table 3), it can be concluded that the northward migration of Asian elephants results from the protection of wild animals and forests, habitat changes, species-migration characteristics, and other factors driving Asian elephants to go out for food.
After leaving their traditional habitats, the behaviors of Asian elephants can be broadly sorted and summarized into four major types: foraging behaviors, movement behaviors, resting behaviors, and playing and bathing behaviors, which can be fundamentally summarized as survival behaviors. Movement and foraging occur most frequently and are the two types of behavior that have the greatest degree of impact on humans. Foraging is the primary purpose, movement is the process, and food shortage is the primary reason for the northward migration of Asian elephant herds, so to some extent, it can be said that foraging is the core behavior of Asian elephants in the process of northward migration, which is based on their basic survival needs. Related research also found elephants may spend anywhere between about 40% and 75% of their time in feeding [
36]. All of their behaviors have a close relationship with the environment. During migration, to consume corn, sugarcane, and other agricultural foods, elephants frequently intrude into villages, farmland, and residential areas. Sukumar’s research also believes that in drier regions of Asia, the agricultural crops consumed by elephants are commonly corn and sugarcane [
36]. The movement and migration of Asian elephants depend on the availability of natural food and water [
36,
37]. Therefore, elephants usually extend their foraging areas to the edges of farmland, where food and water resources are abundant [
38], which leads to HEC. Asian elephants also play and bathe during their northern migration. Bathing, primarily in the form of rain showers, water baths, sand baths, mud baths, and grass baths, is one of the key ways they lower their body temperature [
32]. Additionally, to help digest their food and replenish salt and inorganic substances, they often suck up inorganic nutrients in the nitrate ponds under the forest.
With the Chinese government’s increasing efforts to protect wildlife and forest resources and the improvement in public awareness of protection, the population of Asian elephants has been increasing. According to the Forestry and Grass Bureau of Yunnan Province, in the 1990s, the population of Asian elephants in Yunnan fell to approximately 150 and faced many problems, such as narrow and fragmented distribution areas, declining habitat quality, and reduced genetic diversity of the population. With increasing protection efforts, the development of the Asian elephant population has exhibited significant changes. Ac-cording to the Xishuangbanna National Nature Reserve Management Bureau, the number of wild Asian elephants has increased from approximately 150 to 300. In recent years, with the gradual improvement in the legal system and the strengthening of people’s awareness of protection, the Asian elephants’ fear of human beings has de-creased, and they have started to move around villages and farmland year-round, even near people, for food. Large herbivores such as elephants require extensive home range for food [
39], so they require a large area of suitable habitat to meet their survival and reproduction needs. According to data from the Yunnan Provincial Online Press Office, Xishuangbanna’s forest coverage rate reached 81% in 2019. With the substantial increase in forest canopy density, the lack of light in the forest has caused some plants, such as plantains and loquat reeds, evolve into inedible woody plants. When the food quantity in the habitat does not match the expansion rate of the elephant population, it causes problems of intra-population competition and a lack of food. To solve this problem, Asian elephants must expand outward to find new habitats and gradually move toward farm villages outside the reserve to feed, leading to the potential risk of HEC.
Despite the increasing human protection of Asian elephants, the existential crisis of Asian elephants has been highlighted by the intensification of human–elephant conflicts. The practice of prohibiting all exploitation in the reserve has increased the forest cover, but it also threatens the survival and reproduction of Asian elephants to a certain extent. On the one hand, herbaceous plants naturally cannot grow well because the forest is too dense, resulting in the ground being deprived of sunlight. Furthermore, the fire-free forest management model affects the turnover rate of grasses and lianas, which reduces the food source of Asian elephants that live on herbs, grasses, and lianas. At the same time, under the influence of multiple development goals, such as agriculture and transportation, habitats that overlap with human activities are impacted by rising cash crop cultivation areas, the construction of highways, and other projects, affecting the migration and communication of Asian elephant populations. In other words, human activities continue to encroach on the living spaces of Asian elephants in different ways. For example, Asian elephants mainly live in valleys and rainforests. In the past 40 years, large areas of natural forests in the primary range of Asian elephants in Yunnan have been occupied by rubber and tea plantations. The share of the rubber plantation area expanded from 0.52% in 1975 to 12.71% in 2014, and the area covered by tea plantations increased from 8.77% to 22.01% [
40]. This caused the habitat of Asian elephants to become disconnected and fragmented, thus forcing Asian elephants to leave their traditional habitats.
The general trend of regional changes in the wild elephant distribution in China is that the northern boundary of the distribution is gradually moving south [
41]. Three thousand years ago, Asian elephants were widely distributed from the northernmost part of China to the Yellow River Basin [
7]. However, with the development of human civilization and the intensification of economic and social activities, as well as excessive deforestation and potential climate change, the distribution of Asian elephants in China has retreated southward at a rate of 0.5° latitude per century [
42]. The distribution area of Asian elephants has drastically decreased, and now they are predominantly distributed in Pu ‘er City, the Xishuangbanna National Nature Reserve, and the Nangunhe National Nature Reserve in Yunnan Province [
40]. In fact, the Asian elephant population in Yunnan has always been characterized by migration and diffusion. According to the data records, the wild Asian elephants distributed in Simao disappeared in 1976 [
43]. It was not until after 1992 that the Asian elephants that moved from Xishuangbanna began to move into Simao District [
44]. According to the statistics of Asian elephant accidents in 2010, 14 Asian elephants moved northward to Simao District of Puer City in 2010, and more than 20 Asian elephants moved to Jiangcheng County in Puer City in 2011. In addition, in wild Asian elephants, as herbivores, cycle feeding patterns are critical factors affecting their migration and diffusion behavior. When food reserves in a certain area reach the upper limit of food intake, Asian elephants will move to another area for food and wait until the food resources in the previous area have recovered before returning to forage [
32]. This causes Asian elephants to constantly migrate and spread in search of optimal foraging sites.
Humans are not the masters of the natural world; nature is a “community of life” of humans and non-humans, and the coexistence and co-prosperity of humans and non-humans is the real, sustainable future of human development [
45]. The relationship between humans and wildlife is a critical dimension of the relationship between humans and nature. Wildlife is a vital part of the natural world and deserves equal rights with humans to live, and wildlife can also move, think, and feel emotions (especially pain) [
46,
47]. Understanding the behavior of wild animals is a key component of human respect for the survival rights of animals. HEC is a pressing issue in major habitat areas of Asian elephants worldwide. For the past 50 years, the “human–elephant retreat” scenario has been frequently played out in Xishuangbanna, China. Human activities have contracted the living space of Asian elephants, while the migration and incidents of Asian elephants undermine the livelihood of humans, and humans and Asian elephants harm each other without any benefit to either side. In this context, balancing the survival rights of Asian elephants with the welfare of human beings is a subject that needs to be studied in depth. Given this, the summary of Asian elephants’ behavior patterns is a critical path. Based on extended behavioral geography and news reports, this study analyzes the behavior of Asian elephants during their northern migration. However, because the media do not report every detail of the elephant movement, the data in this paper cannot represent the complete migration behavior of the elephants, and it needs to be verified by other scholars’ research.
4.2. Policy Implications
The prohibition of all exploitation is the current approach to protecting nature reserves in China. However, such approach to conservation is also seen as not respecting the existing patterns of human–elephant relationships. The over-protection of forest vegetation in the reserve has also caused a lack of understory plants, which has aggravated the islanding of wild elephants’ living spaces and forced Asian elephants to enter human living and production spaces to feed. Therefore, the proliferation of Asian elephants is inevitable. Many experts and scholars believe that the HEC is an inevitable practical problem [
17,
32,
48]. Thus, it is crucial to explore how to protect Asian elephants and to cooperate with forest conservation and forest resources development in protected areas to mitigate human-elephant conflicts, based on a comprehensive analysis and summary of the experiences and lessons from the process of Asian elephants’ migration northward.
The first goal should be to change the perception and regard of animals as cohabitants of the natural space, respect the traditional use of communities, and to build a symbiotic relationship between people and ecosystems. For Asian elephants, there is no concept of “habitat,” and their choice of habitat depends on various factors, such as food availability, habitat characteristics, predation, and competition [
49]. The awareness of local people in terms of wildlife protection should be improved through wildlife protection publicity to improve their knowledge and perception toward elephants. Forest and wildlife conservation also requires considering the wholeness of people and the ecosystem, respecting the objective laws of ecosystem succession, accepting natural disasters and natural phenomena, and respecting the authenticity of the forest system.
Second, it is necessary to change the protection mode. Traditional “closed” conservation strategies can effectively protect biodiversity in nature reserves but may not mitigate the conflicts between regional development and Asian elephants’ conservation [
50]. Under the eviction model, communities are mostly clustered around the reserve, and human activities outside the reserve have blocked the biological corridors of Asian elephants. Therefore, there is a current need to strengthen the protection and management of forest resources based on the ecosystem capacity, restore the original biological corridor, and restore the real and complete natural forest ecosystem. Due to the diversity of wild animal species in the reserve, different species have varying habitat requirements. Therefore, establishing the Asian Elephant National Park might be urgently needed to protect Asian elephants [
31]. Furthermore, a unified protection management system should be established by integrating and optimizing the existing habitat range to further protect Asian elephants in this area.
Finally, based on traditional methods, such as strengthening the protection of food sources and restoring habitats, we should strengthen the application of modern science and technology and build a better forest monitoring system. Using digital technology, the activity track, living habits, and ecological environment of Asian elephants can be mapped in the digital world. By analyzing the digital data, scientific and accurate decision support can be provided for the monitoring and early warning of Asian elephants and their habitats in practice.